Are you looking to be part of an early-stage venture and have proven experience in web3 content creation?

Location: Remote. Your team is based in Europe, India, and Canada.

Working Language: English

About the project

The #1 Crypto rewards platform where daily rewards meet smart investing.

Klink is a leading crypto wealth creation platform that innovatively combines quest-based task rewards with strategic investing opportunities on its multi-service platform. Klink provides a unique opportunity for its users to earn cryptocurrencies starting from $0 of personal investment and has already partnered with some of the leading companies in web3.

The company is backed by top-tier VCs in the US & Asia.

Tasks

We are now looking for an ambitious Fullstack Engineer to join the team. You will be joining a team of 20 (12 with technical background) with a live product with over 400,000 users already. As you work on building an innovative solution competing with products on a global scale, you will always be up to date on all the latest technologies and best practices, especially regarding the web3 space.

You will:

• Collaborate on the development of highly scalable Node.js products hosted on cloud-based infrastructure, facilitating access to DeFi opportunities for CeFi users.
• Construct and maintain internal and external RESTful APIs, ensuring swift and seamless updates to our products.
• Develop diverse platforms, optimizing for high throughput and faultlessness in execution.
• Integrate external providers from the FinTech and Blockchain industry to enhance our product offerings.
• Engage in regular communication with the technical lead and the entire team to discuss solutions and innovations.
• Actively participate in code reviews to uphold code quality, maintainability, and adherence to best practices.

Requirements

We do not focus on the time you have spent sitting in the lecture halls of this world but we want to understand what makes you feel comfortable, extraordinarily motivated and suitable to take over this position. We are looking for a team member who feels comfortable working remotely and in English in an international environment with a self-driven “Get stuff done” mindset.

• Experience in serverless architecture and microservices.
• Proven understanding of Blockchain and Web3 solutions.
• Proficiency in Javascript frameworks, with a focus on Typescript (Nest.js, Next.js, Node.js).
• Strong MVP-focused coding skills in any modern programming language.
• Solid understanding of cloud solutions, specifically Amazon Web Services (AWS).
• Good knowledge of data structures, algorithms, and relational databases.
• Familiarity with security best practices in cloud environments.
• Full-stack development experience with a strong proficiency in React.js, Next.js, and NestJS. Expertise in building dynamic, scalable, and high-performance web applications, ensuring seamless integration between front-end and back-end technologies for optimized user experiences and efficient server-side rendering.

Benefits

• Join at an early stage and be involved in decisions that shape the company’s future and the opportunity to build your own success story
• You will have a lot of autonomy and freedom in your role to innovate, test and fail
• Take a trip with an international team of highly skilled individuals who will always support you on this journey

If you want to know more about this opportunity please complete this application with your most recent work profile and we will get back to you ASAP.

We are excited to meet you!

Apply Now:

Full time - permanent role - Paris or full remote from Western EU - 58-70k€ + shares

We’re looking for a Back-end Engineer at Kiln. We are maintaining about 26 protocols.

1) Building the product: You’ll be working closely with the Product and Infrastructure teams to plan, architect, and implement our core product. You’ll take part in the construction of the roadmap with the rest of the team. In this role, it includes:

• Development of data aggregators for blockchains

• Development of new Golang microservices within the Kiln stack

• Taking part in automation & deployment processes

• Framework development

2) Owning what you build: As you architect, test, and refine the Kiln platform, you will ensure that our services communicate with each other seamlessly, have minimal downtime, and recover quickly (daytime, no on-calls)

3) Helping grow the Team: Everyone on the early team plays an important role in attracting, closing, and growing other talented team members. You can also mentor or brainstorm with other backend developers.

Our stack

• Mostly in Golang with a bit of JavaScript and TypeScript

• Communication between services is done using HTTP Rest, and most of our databases are backed by PostgreSQL

• Everything runs in Kubernetes on GCP

Preferred experience

Skills & background

• Strong communication skills both in French & English to facilitate the design of scalable architectures with SREs

  • French can be a "nice to have" if you have several professional web3 experiences

• Golang (over 1 year of experience)

• Over 4 years of experience designing, building, and deploying user-facing, infrastructure-related, and/or API-based products (Python, PHP...)

  • Experience coding in JavaScript and TypeScript is a plus

• Experience working with container technologies such as Docker, Kubernetes, and Continuous Integration is a plus

• Familiarity with CGP is a plus

Soft skills

• Curiosity and the ability to dig into a topic and follow through

• Team spirit: discuss, do not try to impose

• Be pragmatic to not over-engineer unnecessarily: startups need to quickly adapt

• Own what is coded and shipped to production

• Trust & clear communication

• Real interest in the blockchain and cryptocurrency space

About Kiln:

Kiln is the leading enterprise-grade rewards platform that enables institutional customers to stake assets and integrate staking & DeFi functionality into their offerings. Our API-first platform provides fully automated validators, staking & DeFi protocols access, and comprehensive data and commission management.

With $11+ billion in crypto assets staked through our platform, Kiln has established a strong presence on Ethereum, managing over 4.5% of the network through 50,000+ validators — all with zero slashing events.

Kiln serves more than 140 leading customers, including Binance, BitPanda, Bitgo, Fireblocks, VanEck, and TrustWallet.

Our team of 92 ecosystem enthusiasts brings experience from industry leaders like Google, Circle, Ledger, Chainalysis, and other prominent technology and cryptocurrency companies.

We've raised $30M in total funding from prominent investors including 1kx, Crypto.com, Illuminate Financial, Consensys, Wintermute, Kraken Ventures...

Join Kiln and help us make the web more secure, stable, decentralized, and fair!

How Kiln will support you:

At Kiln, our values drive us: Technical Excellence ensures top security and usability; Innovation-Driven Meritocracy elevates groundbreaking ideas; Trust and Transparency build reliability through open communication; and People First keeps our team and clients at the heart of everything we do.

• A fast-paced, bureaucracy-free work environment

• Equity share options in the business: if Kiln succeeds, we all succeed!

• Competitive salary

• Flexible holiday

• Flexible remote working

• Choose your IT equipment

• Contribution to Internet connexion

• Significant personal development budget (books, training)

• Overseas tech conferences budget

Kiln is an Equal Opportunity Employer

We are committed to fostering an inclusive and diverse workplace where everyone is valued and respected. We welcome applications from all backgrounds, including women or persons with disabilities.

Your interview process

Our thorough process ensures the best fit for both you and Kiln, and we strive to make each step valuable and efficient.

1. Recruiter's discussion (45 min) with Myriam

2. Take-home test (< 3 hours)

3. Technical Interview (90 min)

4. Core Values Interview (45 min)

5. Founders Interview (30 min)

6. Offer!

Your personal information will be securely stored in our Applicant Tracking System (ATS) and will not be shared with external parties. We comply fully with GDPR regulations to protect your data and privacy.

Please note that we do not sponsor visas for persons without work authorization in your location. This role is for full-time employees only (no B2B or contractors). Thank you!

Apply Now:

OpenSea is looking to hire a Staff Frontend Engineer to join their team. This is a full-time position that can be done remotely anywhere in the United States.

OpenSea - The world's first and largest web3 marketplace for NFTs and crypto collectibles.

DFINITY is seeking a Senior Frontend Software Engineer to join the team building Caffeine, an innovative AI-driven no-code platform. Caffeine will empower everyday users to design, develop, and deploy software applications on the Internet Computer (IC), a revolutionary decentralized and serverless alternative to traditional cloud compute platforms. Are you new to decentralization or not an expert in blockchain or cryptography? That’s okay! We have some of the world’s foremost experts and they’re excited to share their knowledge. You bring your awesome skills and help us create something amazing. * Please note that this role requires in-office work from our amazing office in San Francisco 3 days per week. What you’ll work on: You’ll own the complete software development lifecycle for key products, including:

Caffeine: A user-friendly tool empowering both technical and non-technical users to create and deploy SaaS applications using natural language prompts ICP Ninja: A web-based IDE designed for new ICP developers, simplifying and accelerating software development and deployment on the Internet Computer

You’ll primarily work in TypeScript, Node.js, React and other modern frontend technologies. Responsibilities:

Design and develop sophisticated and user-friendly interfaces for enhanced developer and user experiences Take end-to-end ownership of features, from initial concept to final deployment, working closely with designers Play a key role in shaping UI architecture and maintaining shared component libraries Work with backend developers to create well-integrated APIs and system functionalities At times, contribute to backend development (in Rust) to ensure comprehensive product delivery

You May Be a Great Fit If You:

Possess a strong foundation in computer science (degree or equivalent) Have significant experience leading frontend or full-stack engineering initiatives Have a proven track record of shipping web applications for both B2B and B2C audiences Have strong proficiency in modern frontend development using JavaScript/TypeScript and frameworks such as React Are proactive and willing to contribute to backend development as necessary. Prioritize user experience and the creation of maintainable code Can effectively collaborate within a diverse, multi-time zone team environment. Exhibit excellent interpersonal and communication abilities Are excited by the potential of democratizing software engineering and building a more resilient internet

Bonus Points:

Experience working with the Internet Computer or other blockchains   Contributions to open-source projects Experience building products around large language models (LLMs) 

More information about what you'll be working on:

Internet Computer Read about Caffeine in the ICP 2025 Roadmap and watch Where AI Builds to learn more about what this team is working on.  Try icp.ninja to see how the Internet Computer makes developing and deploying applications a streamlined process.

Base Salary Range:  $175,000 - $235,000/yr This position can be considered across multiple levels. Total compensation at DFINITY consists of base salary + generous bonus and is determined based on multiple factors including job leveling, areas of expertise, educational background, geographic location and overall experience.   In addition to the cash components of our offers, we have generous benefits including top tier medical, dental, and vision insurance; disability insurance; life insurance; 401(k); flexible PTO policy in addition to paid holidays.About DFINITY and the Internet Computer:

DFINITY is a leading contributor to the Internet Computer Protocol (ICP), with a mission to bring the world's compute onto the secure ICP network. Built on its unique third-generation blockchain technology, ICP enables the development and operation of a new generation of unstoppable, tamper-proof, fully decentralized web applications. Its powerful technology can run entire AI models within smart contracts, representing a major advancement for secure AI. Through seamless integration with Bitcoin, Ethereum, and other networks, ICP facilitates multi-chain operations for digital assets and web3. Join our team of over 250 talented individuals, including world-renowned cryptographers, distributed systems engineers, programming language experts, and industry leaders, who are shaping the future of the internet and web3.

DFINITY was founded in 2016 by entrepreneur and crypto theoretician, Dominic Williams.All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status.

Apply Now:

Company: tastytrade Role: Senior Software Engineer (JavaScript) As a Senior Software Engineer, you'll help by modifying existing systems, taking on ownership of current systems as well as green field projects, and troubleshooting issues as they arise. Our engineers work with a variety of tools including C++, Java, JavaScript, and Ruby. You'll work on front-end systems in an effort to expand and improve our product suite.  What you'll do: 

Work on tastytrade's front-end trading client applications using Svelte, though experience with other modern front-end JavaScript frameworks is valuable  Contribute to the Java-based core front-end trading logic library; prior Java experience beneficial but not required  Take ownership over several of tastytrade's client-facing applications or end-to-end systems within client-facing applications  Transform business requirements and technical direction into production-quality code  Collaborate with UX and Product teams to improve customer workflows and overall user experience  Provide technical leadership for junior team members through small project team management and individualized technical mentorship  Deliver concise, constructive peer reviews covering codecraft, implementation quality, and business domain correctness for both junior and senior engineers  Create proof-of-concept implementations that leverage new technologies or novel architectures to establish pathways for future projects  Scale existing technology through architecture profiling, code refactoring, and strategic collaboration with technical leadership and other teams  Write comprehensive tests for your code  Support application development with necessary infrastructure work, coordinating with the infrastructure team as needed 

Who you are: 

The ability to learn quickly in areas in which you don't already have deep expertise  A mastery of modern web development (JavaScript / Typescript, HTML, and CSS) and the ability/willingness to deploy and manage production applications  The ability to jump into a brand-new framework or language and quickly become productive in it  Confident in ability to write tests and quickly deliver stable and performant software  5+ years of professional experience working as a software engineer on a team, preferably with some experience as a technical lead or mentor  A keen eye for user experience and design

Team Perks: 

Performance Bonuses    Stock Purchase Options  Medical/Dental/Vision Benefits  Annual educational / conference stipend  Sustainable workday with minimal on-call responsibilities  401k Plan    20 Paid Vacation Days (plus an additional paid vacation day the month of your birthday!)    10 Paid Sick Days    Gym Membership Reimbursement    Commuter Benefits    Pet Insurance    Wellness & Mental Health Programs    Charitable Donation Matching    Two Paid Volunteer Days Off    Daily catered lunch when in the office    Full kitchen with snacks and beverages    In-building gym    Shuttle to/from Metra    Office located in the West Loop - Chicago's growing center of tech, great cuisine, and high-end bars  

Salary Range: $156,672 - $182,272 The actual salary offered will be based on the candidate's level of experience and qualifications  About Us: The tasty house of brands empowers individual traders differently. tastylive, founded in 2011, is an online financial media network, tastytrade (previously known as tastyworks) is a self-directed retail brokerage firm that launched in 2017, tasty Software Solutions and tastyfx, is a registered Forex broker-dealer. In 2021, London-based IG Group acquired tastylive, Inc. (previously known as tastytrade) and assigned it to lead business in North America. tastyfx is the fastest-growing forex broker in the US over the past few years. Changing the IG US name to tastyfx marks the next chapter, in aligning with the tasty brand family and offering a more forex-focused experience. This combined team has years of experience like institutional brokers, but also a passion for disrupting the entire trading industry.  Our dream is simple: we want more people to find more success with a better trading experience. That’s why we’re investing heavily in the right people, technology, and media to make that happen in the US and across the globe.  Location: Our office is in the West Loop - Chicago's growing center of tech, great cuisine, and high-end bars.  tastytrade | tastylive | tastyfx | tastycrypto 1330 W Fulton Market, Chicago, IL 60607  *Don't meet every single requirement? Studies have shown that women and people of color are less likely to apply to jobs unless they have every single qualification. Our team is dedicated to building a diverse, inclusive, and authentic workplace, so if you’re excited about this role but your experience doesn't align perfectly, we encourage you to apply anyway. You may be just the right candidate for this or other roles!  

Apply Now:

About the Company:  Shardeum is building a layer 1, EVM-based, linearly scalable, smart contract platform that provides low gas fees forever while maintaining true decentralization and solid security through dynamic state sharding. Shardeum aims to be a chain capable of onboarding over a billion people to the crypto revolution, while also democratizing accessibility to decentralization. Shardeum’s mission is supported by prominent Venture Capitalists in the blockchain space, and we are on track to become one of the most widely used and well known smart contract platforms in blockchain history.We encourage you to browse our website, Whitepaper, Discord and YouTube channel to learn more about the project. You can even try downloading our validator software and joining our Testnet. We encourage people of all backgrounds to apply. Your talent and potential is what matters most to us. Shardeum is committed to creating an inclusive culture.About The Role: The Engineering team at Shardeum is responsible for delivering the Shardeum Mainnet and developing critical components such as the smart contract platform, consensus layer, and protocol layer. As part of this team, the Senior Software Engineer - Testing Tools & Strategy will play a key role in ensuring the quality, reliability, and performance of Shardeum’s decentralized platform through robust test automation, debugging, and validation processes. This role is ideal for engineers who have a passion for test automation, load testing, and identifying root causes of bugs to enhance blockchain performance and scalability. If you’re excited about solving unique challenges in the Web3 space and driving innovation in blockchain testing methodologies, we want to hear from you! What You'll Be Doing:

Analyze bug tickets, debug code, and identify the root cause of errors across the Shardeum platform. Design, develop, and maintain test automation frameworks and reusable test scripts to validate core functionality, including nodes, consensus mechanisms, smart contracts, and blockchain transactions. Utilize cutting edge AI tools to make testing faster and more efficient (Cursor, Github Copilot, Windsurf, Cline, etc..) Develop and execute load testing scripts to validate system performance under high transaction loads and varying node configurations. Create comprehensive test coverage through functional, integration, system, and regression testing while optimizing test suites and identifying performance bottlenecks. Develop end-to-end (E2E) test cases for complex workflows, ensuring reliability of consensus protocols and smart contract execution. Collaborate closely with development teams to integrate testing into CI/CD pipelines, improve testing workflows, and troubleshoot dependency failures. Build and maintain internal tools to improve developer experience, productivity, and test efficiency. Troubleshoot highly complex automated testing failures using industry-standard frameworks and custom tools, working with developers and backend partners to triage issues and improve E2E reliability. Develop monitoring tools and utilities to track blockchain-specific performance metrics and test results. Participate actively in agile ceremonies, including sprint planning, stand-ups, and retrospectives, to drive testing best practices. Continuously research and adopt innovative tools, frameworks, and testing methodologies to improve quality, scalability, and efficiency of testing processes.

What We're Looking For:

5+ years of experience in Software Engineering experience with a focus on testing. Proficiency in programming languages like TypeScript/JavaScript and Node.js, with the ability to develop robust and reusable test scripts. Ability/desire to write Unit Tests in TypeScript/JavaScript and Node.js Proven ability to analyze and debug complex codebases, troubleshoot multi-tier web architecture issues, and identify root causes of failures. Experience integrating automated tests into CI/CD workflows (e.g., GitHub Actions, Jenkins). Expertise in defining and implementing release, regression, and smoke testing strategies for large, multi-team applications. Experience with white-box testing methodologies to ensure deep validation of internal components. Strong problem-solving and critical-thinking skills, particularly in analyzing blockchain-specific issues. You have a tester mindset, are curious, and excel at designing innovative and interesting test scenarios. You are creative in applying proven tools/test frameworks as well as crafting new solutions to challenging problems. Knowledge of Agile/Scrum methodologies and the software development lifecycle. Excellent verbal and written communication skills for clear bug reporting and collaboration across teams.

We'd Love If You Have:

Experience with testing decentralized applications (dApps), consensus protocols, or blockchain platforms. Experience in running nodes within blockchain networks and monitoring performance metrics. Familiarity with blockchain tools and frameworks (e.g., Web3.js, Hardhat, Truffle). Hands-on knowledge and experience with AI tools (Cursor, Github Copilot, Windsurf, Cline, etc...), and the ability to demonstrate how you utilize them in your day to day. Contributions to open-source projects related to testing, automation, or blockchain. A passion for emerging technologies, including Web3, AI, and distributed systems. Experience using or contributing to the Shardeum open-source repos. Familiarity with blockchain performance benchmarks and profiling tools. Knowledge of the Bitcoin and Ethereum whitepapers.

We are building the infrastructure for Web 3.0. 

Apply Now:

WOO X is a global centralised crypto futures and spot trading platform offering best-in-class liquidity and price execution. WOO X has an average daily volume exceeding $1.5 billion and is home to hundreds of thousands of traders worldwide. WOO X traders benefit from radical transparency through our industry-first live Proof of Reserves & Liabilities dashboard and the company's mission to maintain the trust of its growing community of traders. Our team of 200+ highly-talented employees works from 12 cities across eight countries in Europe and Asia 🚀 Our vision is to inspire confidence, higher performance, and joy in every user. We have a mission to provide the best liquidity on the best terms. We compete not just on price execution but also on integrity, user experience, innovative tools, and global opportunities. About the opportunity: We are looking for a Junior Software Engineer who can join us along this mission and vision. You’ll become an integral part of the Tech team, you’ll be matched to one of our core engineering teams — such as backend, frontend, QA, or infrastructure — based on your skills, interests, and learning goals. Interested? Keep on reading! What you’ll be working on:

Collaborate with your assigned team (backend/frontend/QA) to build product features, tools, or infrastructure. Participate in code reviews, tech discussions, and team agile processes. Learn and apply best practices in scalable system design, automated testing, and modern development workflows. Contribute to internal projects or product enhancements used by real traders worldwide.

Why work with us: Join us in realising our vision in advancing decentralisation, and leading innovation in CeFi. Enjoy work flexibility, a supportive team, and an environment that nurtures your ideas. Plus, expect a performance-based annual bonus for all contributors at WOO 💪 About you:

Final-year student or recent graduate in Computer Science, Information Engineering/Management, or related field. Solid understanding of programming concepts, data structures, and algorithms. Familiarity with at least one programming language (e.g. Java, Python, JavaScript). Proactive, curious, and eager to learn from real-world engineering challenges. Bonus points for:

Java / Spring Boot experience Personal or school projects demonstrating engineering skills Internship or side project experience in software development.

Getting the job We're actively seeking talented individuals to join our team outside of our typical hiring schedule. This proactive approach allows us to connect with exceptional candidates like you even before specific positions become available. On average, successful candidates go through five rounds of interviews and tests. Our hiring process begins by meeting with our People Team, who help facilitate the process of placing you in your new role. You can expect to share your experience and ideas in online video interviews with our hiring team, made up of management and potential new colleagues. Submitting your resume now ensures that you're first in line when new opportunities arise. By doing so, you'll have a head start in the selection process and get a chance to showcase your skills and experience. Get started on your application here!

Apply Now:

Apply Now:

As a part of the Developer Experience Team, you will work on the products that help developers onboard and create applications on the Stellar Network. Our team builds a few applications, some of them being Stellar Laboratory, Stellar CLI and the Stellar Javascript SDK. You will play a pivotal role as a visionary technical leader, shaping and innovating the SDKs that serve as the backbone of our customers' experiences. This role has a direct impact in making the Stellar tooling the best in industry and will be working very closely with our Product and Developer Relations teams. In this role, you will join our Developer Experience team, focusing on Javascript SDK development for the Stellar Network. As a key member of this team, you’ll be responsible for designing and owning the Stellar Javascript SDK, a critical tool that enables developers to build applications on the Stellar Network. In this role, you will:

Lead the design, development, and maintenance of the Stellar Javascript SDK Collaborate closely with Product and Developer Relations teams to enhance developer experience Innovate and improve existing tools for all projects under the DevX umbrella. Contribute to making Stellar tooling the best in the industry Mentor junior engineers and provide technical leadership Engage with the developer community to gather feedback and implement improvements

You have:

5+ years of professional software development experience JavaScript experience, API design Experience with SDK development, bundlers and babel Experience building and maintaining client applications or libraries Expertise in Backend Development: Strong proficiency in Node.js, TypeScript/JavaScript best practices, along with experience in at least one other server-side language Familiarity with blockchain technology and cryptography concepts Excellent problem-solving and communication skills Making complicated things easier to use

Bonus Points if (optional):

Experience with open-source project management Knowledge of the Stellar Network and its ecosystem Familiarity with other programming languages (e.g., Python, Rust) Understanding of financial technology and decentralized systems

We offer competitive pay with a base salary range for this position of $170,000 - $260,000 depending on job-related knowledge, skills, experience, and location. In addition, we offer lumen-denominated grants along with the following perks and benefits: USA Benefits/Perks:

Competitive health, dental & vision coverage with most plans covered at 100% for the employee + any dependents Flexible time off + 15 company holidays including a company-wide holiday break Up to 12 weeks of paid parental leave for both non-birthing and birthing parents, as well as up to 14 weeks of paid pregnancy leave for birthing parents Gym reimbursement ($80 per month) Life & ADD (up to $50K) Short & Long term disability 401K with 4% match Health & Dependent Care FSA Accounts Commuter benefits with $250/month employer contribution Health Savings Account (HSA) with monthly employer contribution Family building benefits through Kindbody Wellbeing benefits (One Medical, Rightway, Headspace) L&D budget of $1,500/year Daily lunch and snacks in office Company retreats

About Stellar   Stellar is more than a blockchain. Powered by a decentralized, fast, scalable, and uniquely sustainable network made for financial products and services and a thriving and passionate ecosystem that includes a non-profit organization driven by a mission, Stellar is paving the path to unlock the world’s economic potential through blockchain technology. Built with speed and low costs in mind, the Stellar network provides builders and financial institutions worldwide a platform to issue assets, and to send and convert currencies in real time creating real world utility. Founded in 2014, the Stellar Development Foundation (SDF) supports the continued development and growth of the Stellar network and also serves the ecosystem of NGOs, corporations, universities, small businesses, governments, and solo entrepreneurs building on the Stellar network through tooling, funding and strategic collaborations. Together, Stellar is where blockchain meets the real world.   About the Stellar Development Foundation   The Stellar Development Foundation (SDF) is a non-profit organization focused on working with and supporting changemakers to create equitable access to the global financial system through blockchain technology. SDF provides grants, investments, funding, and other awards to builders and organizations. SDF also develops resources and tooling on the Stellar network to help unlock real world utility. As a nonprofit foundation, SDF puts the health of the Stellar network and the Stellar ecosystem and its mission above all else.   We look forward to hearing from you!   Privacy Policy   By submitting your application, you are agreeing to our use and processing of your data in accordance with our Privacy Policy.   SDF is committed to diversity in its workforce and is proud to be an equal opportunity employer. SDF does not make hiring or employment decisions on the basis of race, color, religion, creed, gender, national origin, age, disability, veteran status, marital status, pregnancy, sex, gender expression or identity, sexual orientation, citizenship, or any other basis protected by applicable local, state or federal law.

Apply Now:

About Chainlabs

Chainlabs is a data startup focused on enabling web3 analytics. We specialize in identifying blockchain address ownership and tracking addresses linked to illicit activities. Our work supports industry leaders like Nansen, Chainalysis, and Arkham in their wallet labeling efforts.

Our primary clients include anti-money laundering (AML) service providers, as well as law enforcement, traders, and academic researchers. Backed by Lunar Rails (200 employees), Chainlabs maintains the agility and independence of a startup while benefiting from financial stability and strong industry connections.

Position Overview

We are seeking a Senior Back End Engineer to develop key data pipelines, including web scrapers, ETL workflows, and AI agents. Your work will enable us to extract critical data from clearnet and darknet platforms and power our blockchain intelligence solutions.

In this role, you’ll design high-performance systems that move data seamlessly into PostgreSQL and BigQuery environments. By tackling complex challenges in web scraping and data engineering, you’ll help us collect, organize, and analyze the web3 ecosystem at scale.

Key Responsibilities

Web Scraping**:

• Design and deploy web scrapers to extract data from complex websites like Etherscan, Arkham, ChainAbuse, etc.
• Implement data collection mechanisms with support for IP rotation, CAPTCHA handling, and dynamic content rendering.
• Help us build Crawlers and Scrapers to find hidden web3 wallets on the Darknet.

Data Engineering**:

• Build and maintain ETL pipelines to ingest scraped data into PostgreSQL or Bigquery.
• Classify the collected web3 wallets into predefined categories (e.g., Swap, Bridge, Scam, Ransomware) according to our taxonomy definitions.

API Maintenance**:

• Maintain and enhance Chainlabs API endpoints to provide seamless access to the data.
• Utilize Python frameworks (e.g., Flask) to support and extend RESTful APIs.

Data Analytics**:

• Use SQL to analyze on-chain data, ie, the behavior of collected wallets, their interaction with other entities, and other on-chain trends

Requirements

• Proficiency in Python for data engineering, web scraping, API development; and databases like PostgreSQL.
• Experience with frameworks such as Scrapy, Selenium and BeautifulSoup.
• Understanding of advanced Web Scraping techniques, including IP rotation, proxy management, and CAPTCHA handling.
• Familiarity with modern AI models, APIs, and SDKs (e.g. OpenAI, LLMs).
• Hands-on experience with ETL orchestration tools like Apache Airflow
• Strong problem-solving and not afraid to work with a wide variety of data.
• Ability to work independently and meet deadlines in a remote environment.
• A passion for blockchain and web3 technologies. An interest in combatting financial cybercrime.
• *Nice to Have: Familiarity with RESTful API development using_ Flask framework.
• Nice to Have: Strong experience with SQL and some exposure to Javascript.
• Nice to Have: Experience with on-chain analytics

Benefits

• Competitive salary.
• Remote work environment with a flexible schedule.
• A team that values data and AI; our founder is a data scientist.
• A company culture that values transparency, speed, courage, and curiosity.
• Opportunities for fast personal and professional growth.
• Exposure to a global network of industry experts and partners.

Are you looking to be part of an early-stage venture and have proven experience in web3 content creation?

Location: Remote. Your team is based in Europe, India, and Canada.

Working Language: English

About the project

The #1 Crypto rewards platform where daily rewards meet smart investing.

Klink is a leading crypto wealth creation platform that innovatively combines quest-based task rewards with strategic investing opportunities on its multi-service platform. Klink provides a unique opportunity for its users to earn cryptocurrencies starting from $0 of personal investment and has already partnered with some of the leading companies in web3.

The company is backed by top-tier VCs in the US & Asia.

Tasks

We are now looking for an ambitious Fullstack Engineer to join the team. You will be joining a team of 20 (12 with technical background) with a live product with over 400,000 users already. As you work on building an innovative solution competing with products on a global scale, you will always be up to date on all the latest technologies and best practices, especially regarding the web3 space.

You will:

• Collaborate on the development of highly scalable Node.js products hosted on cloud-based infrastructure, facilitating access to DeFi opportunities for CeFi users.
• Construct and maintain internal and external RESTful APIs, ensuring swift and seamless updates to our products.
• Develop diverse platforms, optimizing for high throughput and faultlessness in execution.
• Integrate external providers from the FinTech and Blockchain industry to enhance our product offerings.
• Engage in regular communication with the technical lead and the entire team to discuss solutions and innovations.
• Actively participate in code reviews to uphold code quality, maintainability, and adherence to best practices.

Requirements

We do not focus on the time you have spent sitting in the lecture halls of this world but we want to understand what makes you feel comfortable, extraordinarily motivated and suitable to take over this position. We are looking for a team member who feels comfortable working remotely and in English in an international environment with a self-driven “Get stuff done” mindset.

• Experience in serverless architecture and microservices.
• Proven understanding of Blockchain and Web3 solutions.
• Proficiency in Javascript frameworks, with a focus on Typescript (Nest.js, Next.js, Node.js).
• Strong MVP-focused coding skills in any modern programming language.
• Solid understanding of cloud solutions, specifically Amazon Web Services (AWS).
• Good knowledge of data structures, algorithms, and relational databases.
• Familiarity with security best practices in cloud environments.
• Full-stack development experience with a strong proficiency in React.js, Next.js, and NestJS. Expertise in building dynamic, scalable, and high-performance web applications, ensuring seamless integration between front-end and back-end technologies for optimized user experiences and efficient server-side rendering.

Benefits

• Join at an early stage and be involved in decisions that shape the company’s future and the opportunity to build your own success story
• You will have a lot of autonomy and freedom in your role to innovate, test and fail
• Take a trip with an international team of highly skilled individuals who will always support you on this journey

If you want to know more about this opportunity please complete this application with your most recent work profile and we will get back to you ASAP.

We are excited to meet you!

Apply Now:

About Zscaler Serving thousands of enterprise customers around the world including 40% of Fortune 500 companies, Zscaler (NASDAQ: ZS) was founded in 2007 with a mission to make the cloud a safe place to do business and a more enjoyable experience for enterprise users. As the operator of the world’s largest security cloud, Zscaler accelerates digital transformation so enterprises can be more agile, efficient, resilient, and secure. The pioneering, AI-powered Zscaler Zero Trust Exchange™ platform, which is found in our SASE and SSE offerings, protects thousands of enterprise customers from cyberattacks and data loss by securely connecting users, devices, and applications in any location. Named a Best Workplace in Technology by Fortune and others, Zscaler fosters an inclusive and supportive culture that is home to some of the brightest minds in the industry. If you thrive in an environment that is fast-paced and collaborative, and you are passionate about building and innovating for the greater good, come make your next move with Zscaler. At Zscaler, our Customer Success Organization is a global, customer-focused team dedicated to delivering high-impact experiences and identifying innovative solutions. We leverage valuable data and research to provide expert, hands-on support starting from the implementation phase and beyond, ensuring customers achieve their goals and leverage our technology to its fullest potential. Together, we create a customer-centric culture that fosters success, adoption, and continuous growth. We’re looking for a Sr. Staff Software Engineer to join our Customer Success Business Architecture team. Reporting to the Sr. Manager, Software Engineering, you will be responsible for:

Working autonomously and collaboratively to design and implement project deliverables Working closely with product managers, designers, and business partners to capture and iterate on robust solutions Building robust and scalable applications focusing on both flexibility and maintainability of all code Designing and developing highly available quality software Ensuring appropriate documentation & processes are followed throughout the lifecycle of projects

What We’re Looking for (Minimum Qualifications)

8+ years of experience with JavaScript and/or TypeScript 5+ years of experience with SQL 5+ years of experience with AWS Proficiency with integrating Salesforce with other services Experience with large data sets, data migrations, and front-end development

What Will Make You Stand Out (Preferred Qualifications)

Proficiency with JavaScript and/or TypeScript, git, React, and SQL Experience with Slack APIs and building AI agents Familiarity with OAuth, SAML, & logging tools

LI-Remote

LI-AM12Zscaler’s salary ranges are benchmarked and are determined by role and level. The range displayed on each job posting reflects the minimum and maximum target for new hire salaries for the position across all US locations and could be higher or lower based on a multitude of factors, including job-related skills, experience, and relevant education or training.

The base salary range listed for this full-time position excludes commission/ bonus/ equity (if applicable) + benefits.Base Pay Range$147,000 - $210,000 USDAt Zscaler, we believe in innovation, productivity, and success. We are looking for individuals from all backgrounds and identities to join our team and contribute to our mission to make doing business seamless and secure. We are guided by these principles as we create a representative and impactful team, and a culture where everyone belongs. Our Benefits program is one of the most important ways we support our employees. Zscaler proudly offers comprehensive and inclusive benefits to meet the diverse needs of our employees and their families throughout their life stages, including:

Various health plans Time off plans for vacation and sick time Parental leave options Retirement options Education reimbursement In-office perks, and more!

By applying for this role, you adhere to applicable laws, regulations, and Zscaler policies, including those related to security and privacy standards and guidelines. Zscaler is committed to providing equal employment opportunities to all individuals. We strive to create a workplace where employees are treated with respect and have the chance to succeed. All qualified applicants will be considered for employment without regard to race, color, religion, sex (including pregnancy or related medical conditions), age, national origin, sexual orientation, gender identity or expression, genetic information, disability status, protected veteran status, or any other characteristic protected by federal, state, or local laws. See more information by clicking on the Know Your Rights: Workplace Discrimination is Illegal link. Pay Transparency Zscaler complies with all applicable federal, state, and local pay transparency rules. For additional information about the federal requirements, click here. Zscaler is committed to providing reasonable support (called accommodations or adjustments) in our recruiting processes for candidates who are differently abled, have long term conditions, mental health conditions or sincerely held religious beliefs, or who are neurodivergent or require pregnancy-related support.

Apply Now:

About Zscaler Serving thousands of enterprise customers around the world including 40% of Fortune 500 companies, Zscaler (NASDAQ: ZS) was founded in 2007 with a mission to make the cloud a safe place to do business and a more enjoyable experience for enterprise users. As the operator of the world’s largest security cloud, Zscaler accelerates digital transformation so enterprises can be more agile, efficient, resilient, and secure. The pioneering, AI-powered Zscaler Zero Trust Exchange™ platform, which is found in our SASE and SSE offerings, protects thousands of enterprise customers from cyberattacks and data loss by securely connecting users, devices, and applications in any location. Named a Best Workplace in Technology by Fortune and others, Zscaler fosters an inclusive and supportive culture that is home to some of the brightest minds in the industry. If you thrive in an environment that is fast-paced and collaborative, and you are passionate about building and innovating for the greater good, come make your next move with Zscaler. At Zscaler, our Customer Success Organization is a global, customer-focused team dedicated to delivering high-impact experiences and identifying innovative solutions. We leverage valuable data and research to provide expert, hands-on support starting from the implementation phase and beyond, ensuring customers achieve their goals and leverage our technology to its fullest potential. Together, we create a customer-centric culture that fosters success, adoption, and continuous growth. We’re looking for a Costa Rica based Sr. Staff Software Engineer to join our Customer Success Business Architecture team. Reporting to the Sr. Manager, Software Engineering, you will be responsible for:

Working autonomously and collaboratively to design and implement project deliverables Working closely with product managers, designers, and business partners to capture and iterate on robust solutions Building robust and scalable applications focusing on both flexibility and maintainability of all code Designing and developing highly available quality software Ensuring appropriate documentation & processes are followed throughout the lifecycle of projects

What We’re Looking for (Minimum Qualifications)

8+ years of experience with JavaScript and/or TypeScript 5+ years of experience with SQL 5+ years of experience with AWS Proficiency with integrating Salesforce with other services Experience with large data sets, data migrations, and front-end development

What Will Make You Stand Out (Preferred Qualifications)

Proficiency with JavaScript and/or TypeScript, git, React, and SQL Experience with Slack APIs and building AI agents Familiarity with OAuth, SAML, & logging tools

LI-Hybrid

LI-AM12At Zscaler, we believe in innovation, productivity, and success. We are looking for individuals from all backgrounds and identities to join our team and contribute to our mission to make doing business seamless and secure. We are guided by these principles as we create a representative and impactful team, and a culture where everyone belongs.

Our Benefits program is one of the most important ways we support our employees. Zscaler proudly offers comprehensive and inclusive benefits to meet the diverse needs of our employees and their families throughout their life stages, including:

Various health plans Time off plans for vacation and sick time Parental leave options Retirement options Education reimbursement In-office perks, and more!

By applying for this role, you adhere to applicable laws, regulations, and Zscaler policies, including those related to security and privacy standards and guidelines. Zscaler is committed to providing equal employment opportunities to all individuals. We strive to create a workplace where employees are treated with respect and have the chance to succeed. All qualified applicants will be considered for employment without regard to race, color, religion, sex (including pregnancy or related medical conditions), age, national origin, sexual orientation, gender identity or expression, genetic information, disability status, protected veteran status, or any other characteristic protected by federal, state, or local laws. See more information by clicking on the Know Your Rights: Workplace Discrimination is Illegal link. Pay Transparency Zscaler complies with all applicable federal, state, and local pay transparency rules. For additional information about the federal requirements, click here. Zscaler is committed to providing reasonable support (called accommodations or adjustments) in our recruiting processes for candidates who are differently abled, have long term conditions, mental health conditions or sincerely held religious beliefs, or who are neurodivergent or require pregnancy-related support.

Apply Now:

About the Company:  Shardeum is building a layer 1, EVM-based, linearly scalable, smart contract platform that provides low gas fees forever while maintaining true decentralization and solid security through dynamic state sharding. Shardeum aims to be a chain capable of onboarding over a billion people to the crypto revolution, while also democratizing accessibility to decentralization. Shardeum’s mission is supported by prominent Venture Capitalists in the blockchain space, and we are on track to become one of the most widely used and well known smart contract platforms in blockchain history.We encourage you to browse our website, Whitepaper, Discord and YouTube channel to learn more about the project. You can even try downloading our validator software and joining our Testnet. We encourage people of all backgrounds to apply. Your talent and potential is what matters most to us. Shardeum is committed to creating an inclusive culture.About The Role: The Engineering team at Shardeum is responsible for delivering the Shardeum Mainnet and developing critical components such as the smart contract platform, consensus layer, and protocol layer. As part of this team, the SDET (Software Development Engineer in Test) will play a key role in ensuring the quality, reliability, and performance of Shardeum’s decentralized platform through robust test automation, debugging, and validation processes. This role is ideal for engineers who have a passion for test automation, load testing, and identifying root causes of bugs to enhance blockchain performance and scalability. If you’re excited about solving unique challenges in the Web3 space and driving innovation in blockchain testing methodologies, we want to hear from you! What You'll Be Doing:

Analyze bug tickets, debug code, and identify the root cause of errors across the Shardeum platform. Design, develop, and maintain test automation frameworks and reusable test scripts to validate core functionality, including nodes, consensus mechanisms, smart contracts, and blockchain transactions. Utilize cutting edge AI tools to make testing faster and more efficient (Cursor, Github Copilot, Windsurf, Cline, etc..) Develop and execute load testing scripts to validate system performance under high transaction loads and varying node configurations. Create comprehensive test coverage through functional, integration, system, and regression testing while optimizing test suites and identifying performance bottlenecks. Develop end-to-end (E2E) test cases for complex workflows, ensuring reliability of consensus protocols and smart contract execution. Collaborate closely with development teams to integrate testing into CI/CD pipelines, improve testing workflows, and troubleshoot dependency failures. Build and maintain internal tools to improve developer experience, productivity, and test efficiency. Troubleshoot highly complex automated testing failures using industry-standard frameworks and custom tools, working with developers and backend partners to triage issues and improve E2E reliability. Develop monitoring tools and utilities to track blockchain-specific performance metrics and test results. Participate actively in agile ceremonies, including sprint planning, stand-ups, and retrospectives, to drive testing best practices. Continuously research and adopt innovative tools, frameworks, and testing methodologies to improve quality, scalability, and efficiency of testing processes.

What We're Looking For:

5+ years of experience in Software Engineering or SDET roles with a focus on testing. Proficiency in programming languages like TypeScript/JavaScript and Node.js, with the ability to develop robust and reusable test scripts. Ability/desire to write Unit Tests in TypeScript/JavaScript and Node.js Proven ability to analyze and debug complex codebases, troubleshoot multi-tier web architecture issues, and identify root causes of failures. Experience integrating automated tests into CI/CD workflows (e.g., GitHub Actions, Jenkins). Expertise in defining and implementing release, regression, and smoke testing strategies for large, multi-team applications. Experience with white-box testing methodologies to ensure deep validation of internal components. Strong problem-solving and critical-thinking skills, particularly in analyzing blockchain-specific issues. You have a tester mindset, are curious, and excel at designing innovative and interesting test scenarios. You are creative in applying proven tools/test frameworks as well as crafting new solutions to challenging problems. Knowledge of Agile/Scrum methodologies and the software development lifecycle. Excellent verbal and written communication skills for clear bug reporting and collaboration across teams.

We'd Love If You Have:

Experience with testing decentralized applications (dApps), consensus protocols, or blockchain platforms. Experience in running nodes within blockchain networks and monitoring performance metrics. Familiarity with blockchain tools and frameworks (e.g., Web3.js, Hardhat, Truffle). Hands-on knowledge and experience with AI tools (Cursor, Github Copilot, Windsurf, Cline, etc...), and the ability to demonstrate how you utilize them in your day to day. Contributions to open-source projects related to testing, automation, or blockchain. A passion for emerging technologies, including Web3, AI, and distributed systems. Experience using or contributing to the Shardeum open-source repos. Familiarity with blockchain performance benchmarks and profiling tools. Knowledge of the Bitcoin and Ethereum whitepapers.

We are building the infrastructure for Web 3.0. It's going to be a rollercoaster ride but promises to be fun.

Apply Now:

Apply Now:

Join Tether and Shape the Future of Digital Finance

Why Join Us?

As a Senior Backend Developer, you will be a part of the team that works on the development of Tether backend components

New Products and Features - Tether continuously strives to create innovative new features in order to provide the most professional trading experience for customers. These are developed and deployed using agile methodologies, to ensure the user experience remains the best in the industry.

Scalability - all backend services that power Tether must remain effortlessly smooth, responsive, and real-time for customers as the platform continues to scale to accommodate new user growth.

Security - Security is the most important feature. The Backend Development team is responsible for building all the services and core processes with the highest security principles and standard, in order to protect the safety of the entire user base.

• +6 years of experience working with Nodejs/JavaScript.

• Familiar with microservices architecture

• Have actively participated in the development of a complex platform

• Familiar with Peer-to-Peer technologies

• Good experience in interacting with databases (MySQL, MongoDB)

• Ability to quickly learn new technologies

• Good understanding of security practices

Nice to have

• Experience with blockchain integration

• Comfortable with high-availability concepts

• Ruby, Rust or C++ skills are a plus

• Other technologies of interest: Message queues (Redis), Caches and Job Queues

Apply Now:

Apply Now:

Join Tether and Shape the Future of Digital Finance

Why Join Us?

As a Senior Backend Developer, you will be a part of the team that works on the development of Tether backend components

New Products and Features - Tether continuously strives to create innovative new features in order to provide the most professional trading experience for customers. These are developed and deployed using agile methodologies, to ensure the user experience remains the best in the industry.

Scalability - all backend services that power Tether must remain effortlessly smooth, responsive, and real-time for customers as the platform continues to scale to accommodate new user growth.

Security - Security is the most important feature. The Backend Development team is responsible for building all the services and core processes with the highest security principles and standard, in order to protect the safety of the entire user base.

• +6 years of experience working with Nodejs/JavaScript.

• Familiar with microservices architecture

• Have actively participated in the development of a complex platform

• Familiar with Peer-to-Peer technologies

• Good experience in interacting with databases (MySQL, MongoDB)

• Ability to quickly learn new technologies

• Good understanding of security practices

Nice to have

• Experience with blockchain integration

• Comfortable with high-availability concepts

• Ruby, Rust or C++ skills are a plus

• Other technologies of interest: Message queues (Redis), Caches and Job Queues

Apply Now:

Join Tether and Shape the Future of Digital Finance

Why Join Us?

As a Senior Backend Developer, you will be a part of the team that works on the development of Tether backend components

New Products and Features - Tether continuously strives to create innovative new features in order to provide the most professional trading experience for customers. These are developed and deployed using agile methodologies, to ensure the user experience remains the best in the industry.

Scalability - all backend services that power Tether must remain effortlessly smooth, responsive, and real-time for customers as the platform continues to scale to accommodate new user growth.

Security - Security is the most important feature. The Backend Development team is responsible for building all the services and core processes with the highest security principles and standard, in order to protect the safety of the entire user base.

• +6 years of experience working with Nodejs/JavaScript.

• Familiar with microservices architecture

• Have actively participated in the development of a complex platform

• Familiar with Peer-to-Peer technologies

• Good experience in interacting with databases (MySQL, MongoDB)

• Ability to quickly learn new technologies

• Good understanding of security practices

Nice to have

• Experience with blockchain integration

• Comfortable with high-availability concepts

• Ruby, Rust or C++ skills are a plus

• Other technologies of interest: Message queues (Redis), Caches and Job Queues

Apply Now:

Join Tether and Shape the Future of Digital Finance

Why Join Us?

As a Senior Backend Developer, you will be a part of the team that works on the development of Tether backend components

New Products and Features - Tether continuously strives to create innovative new features in order to provide the most professional trading experience for customers. These are developed and deployed using agile methodologies, to ensure the user experience remains the best in the industry.

Scalability - all backend services that power Tether must remain effortlessly smooth, responsive, and real-time for customers as the platform continues to scale to accommodate new user growth.

Security - Security is the most important feature. The Backend Development team is responsible for building all the services and core processes with the highest security principles and standard, in order to protect the safety of the entire user base.

• +6 years of experience working with Nodejs/JavaScript.

• Familiar with microservices architecture

• Have actively participated in the development of a complex platform

• Familiar with Peer-to-Peer technologies

• Good experience in interacting with databases (MySQL, MongoDB)

• Ability to quickly learn new technologies

• Good understanding of security practices

Nice to have

• Experience with blockchain integration

• Comfortable with high-availability concepts

• Ruby, Rust or C++ skills are a plus

• Other technologies of interest: Message queues (Redis), Caches and Job Queues

Apply Now:

Join Tether and Shape the Future of Digital Finance

Why Join Us?

As a Senior Backend Developer, you will be a part of the team that works on the development of Tether backend components

New Products and Features - Tether continuously strives to create innovative new features in order to provide the most professional trading experience for customers. These are developed and deployed using agile methodologies, to ensure the user experience remains the best in the industry.

Scalability - all backend services that power Tether must remain effortlessly smooth, responsive, and real-time for customers as the platform continues to scale to accommodate new user growth.

Security - Security is the most important feature. The Backend Development team is responsible for building all the services and core processes with the highest security principles and standard, in order to protect the safety of the entire user base.

• +6 years of experience working with Nodejs/JavaScript.

• Familiar with microservices architecture

• Have actively participated in the development of a complex platform

• Familiar with Peer-to-Peer technologies

• Good experience in interacting with databases (MySQL, MongoDB)

• Ability to quickly learn new technologies

• Good understanding of security practices

Nice to have

• Experience with blockchain integration

• Comfortable with high-availability concepts

• Ruby, Rust or C++ skills are a plus

• Other technologies of interest: Message queues (Redis), Caches and Job Queues

Apply Now:

Join Tether and Shape the Future of Digital Finance

Why Join Us?

As a Senior Backend Developer, you will be a part of the team that works on the development of Tether backend components

New Products and Features - Tether continuously strives to create innovative new features in order to provide the most professional trading experience for customers. These are developed and deployed using agile methodologies, to ensure the user experience remains the best in the industry.

Scalability - all backend services that power Tether must remain effortlessly smooth, responsive, and real-time for customers as the platform continues to scale to accommodate new user growth.

Security - Security is the most important feature. The Backend Development team is responsible for building all the services and core processes with the highest security principles and standard, in order to protect the safety of the entire user base.

• +6 years of experience working with Nodejs/JavaScript.

• Familiar with microservices architecture

• Have actively participated in the development of a complex platform

• Familiar with Peer-to-Peer technologies

• Good experience in interacting with databases (MySQL, MongoDB)

• Ability to quickly learn new technologies

• Good understanding of security practices

Nice to have

• Experience with blockchain integration

• Comfortable with high-availability concepts

• Ruby, Rust or C++ skills are a plus

• Other technologies of interest: Message queues (Redis), Caches and Job Queues

Apply Now:

Join Tether and Shape the Future of Digital Finance

Why Join Us?

As a Senior Backend Developer, you will be a part of the team that works on the development of Tether backend components

New Products and Features - Tether continuously strives to create innovative new features in order to provide the most professional trading experience for customers. These are developed and deployed using agile methodologies, to ensure the user experience remains the best in the industry.

Scalability - all backend services that power Tether must remain effortlessly smooth, responsive, and real-time for customers as the platform continues to scale to accommodate new user growth.

Security - Security is the most important feature. The Backend Development team is responsible for building all the services and core processes with the highest security principles and standard, in order to protect the safety of the entire user base.

• +6 years of experience working with Nodejs/JavaScript.

• Familiar with microservices architecture

• Have actively participated in the development of a complex platform

• Familiar with Peer-to-Peer technologies

• Good experience in interacting with databases (MySQL, MongoDB)

• Ability to quickly learn new technologies

• Good understanding of security practices

Nice to have

• Experience with blockchain integration

• Comfortable with high-availability concepts

• Ruby, Rust or C++ skills are a plus

• Other technologies of interest: Message queues (Redis), Caches and Job Queues

Apply Now:

Join Tether and Shape the Future of Digital Finance

Why Join Us?

As a Senior Backend Developer, you will be a part of the team that works on the development of Tether backend components

New Products and Features - Tether continuously strives to create innovative new features in order to provide the most professional trading experience for customers. These are developed and deployed using agile methodologies, to ensure the user experience remains the best in the industry.

Scalability - all backend services that power Tether must remain effortlessly smooth, responsive, and real-time for customers as the platform continues to scale to accommodate new user growth.

Security - Security is the most important feature. The Backend Development team is responsible for building all the services and core processes with the highest security principles and standard, in order to protect the safety of the entire user base.

• +6 years of experience working with Nodejs/JavaScript.

• Familiar with microservices architecture

• Have actively participated in the development of a complex platform

• Familiar with Peer-to-Peer technologies

• Good experience in interacting with databases (MySQL, MongoDB)

• Ability to quickly learn new technologies

• Good understanding of security practices

Nice to have

• Experience with blockchain integration

• Comfortable with high-availability concepts

• Ruby, Rust or C++ skills are a plus

• Other technologies of interest: Message queues (Redis), Caches and Job Queues

Apply Now:

Join Tether and Shape the Future of Digital Finance

Why Join Us?

As a Senior Backend Developer, you will be a part of the team that works on the development of Tether backend components

New Products and Features - Tether continuously strives to create innovative new features in order to provide the most professional trading experience for customers. These are developed and deployed using agile methodologies, to ensure the user experience remains the best in the industry.

Scalability - all backend services that power Tether must remain effortlessly smooth, responsive, and real-time for customers as the platform continues to scale to accommodate new user growth.

Security - Security is the most important feature. The Backend Development team is responsible for building all the services and core processes with the highest security principles and standard, in order to protect the safety of the entire user base.

• +6 years of experience working with Nodejs/JavaScript.

• Familiar with microservices architecture

• Have actively participated in the development of a complex platform

• Familiar with Peer-to-Peer technologies

• Good experience in interacting with databases (MySQL, MongoDB)

• Ability to quickly learn new technologies

• Good understanding of security practices

Nice to have

• Experience with blockchain integration

• Comfortable with high-availability concepts

• Ruby, Rust or C++ skills are a plus

• Other technologies of interest: Message queues (Redis), Caches and Job Queues

Apply Now:

Join Tether and Shape the Future of Digital Finance

Why Join Us?

As a Senior Backend Developer, you will be a part of the team that works on the development of Tether backend components

New Products and Features - Tether continuously strives to create innovative new features in order to provide the most professional trading experience for customers. These are developed and deployed using agile methodologies, to ensure the user experience remains the best in the industry.

Scalability - all backend services that power Tether must remain effortlessly smooth, responsive, and real-time for customers as the platform continues to scale to accommodate new user growth.

Security - Security is the most important feature. The Backend Development team is responsible for building all the services and core processes with the highest security principles and standard, in order to protect the safety of the entire user base.

• +6 years of experience working with Nodejs/JavaScript.

• Familiar with microservices architecture

• Have actively participated in the development of a complex platform

• Familiar with Peer-to-Peer technologies

• Good experience in interacting with databases (MySQL, MongoDB)

• Ability to quickly learn new technologies

• Good understanding of security practices

Nice to have

• Experience with blockchain integration

• Comfortable with high-availability concepts

• Ruby, Rust or C++ skills are a plus

• Other technologies of interest: Message queues (Redis), Caches and Job Queues

Apply Now:

Join Tether and Shape the Future of Digital Finance

Why Join Us?

As a Senior Backend Developer, you will be a part of the team that works on the development of Tether backend components

New Products and Features - Tether continuously strives to create innovative new features in order to provide the most professional trading experience for customers. These are developed and deployed using agile methodologies, to ensure the user experience remains the best in the industry.

Scalability - all backend services that power Tether must remain effortlessly smooth, responsive, and real-time for customers as the platform continues to scale to accommodate new user growth.

Security - Security is the most important feature. The Backend Development team is responsible for building all the services and core processes with the highest security principles and standard, in order to protect the safety of the entire user base.

• +6 years of experience working with Nodejs/JavaScript.

• Familiar with microservices architecture

• Have actively participated in the development of a complex platform

• Familiar with Peer-to-Peer technologies

• Good experience in interacting with databases (MySQL, MongoDB)

• Ability to quickly learn new technologies

• Good understanding of security practices

Nice to have

• Experience with blockchain integration

• Comfortable with high-availability concepts

• Ruby, Rust or C++ skills are a plus

• Other technologies of interest: Message queues (Redis), Caches and Job Queues

Apply Now:

Join Tether and Shape the Future of Digital Finance

Why Join Us?

As a Senior Backend Developer, you will be a part of the team that works on the development of Tether backend components

New Products and Features - Tether continuously strives to create innovative new features in order to provide the most professional trading experience for customers. These are developed and deployed using agile methodologies, to ensure the user experience remains the best in the industry.

Scalability - all backend services that power Tether must remain effortlessly smooth, responsive, and real-time for customers as the platform continues to scale to accommodate new user growth.

Security - Security is the most important feature. The Backend Development team is responsible for building all the services and core processes with the highest security principles and standard, in order to protect the safety of the entire user base.

• +6 years of experience working with Nodejs/JavaScript.

• Familiar with microservices architecture

• Have actively participated in the development of a complex platform

• Familiar with Peer-to-Peer technologies

• Good experience in interacting with databases (MySQL, MongoDB)

• Ability to quickly learn new technologies

• Good understanding of security practices

Nice to have

• Experience with blockchain integration

• Comfortable with high-availability concepts

• Ruby, Rust or C++ skills are a plus

• Other technologies of interest: Message queues (Redis), Caches and Job Queues

Apply Now:

Join Tether and Shape the Future of Digital Finance

Why Join Us?

As a Senior Backend Developer, you will be a part of the team that works on the development of Tether backend components

New Products and Features - Tether continuously strives to create innovative new features in order to provide the most professional trading experience for customers. These are developed and deployed using agile methodologies, to ensure the user experience remains the best in the industry.

Scalability - all backend services that power Tether must remain effortlessly smooth, responsive, and real-time for customers as the platform continues to scale to accommodate new user growth.

Security - Security is the most important feature. The Backend Development team is responsible for building all the services and core processes with the highest security principles and standard, in order to protect the safety of the entire user base.

• +6 years of experience working with Nodejs/JavaScript.

• Familiar with microservices architecture

• Have actively participated in the development of a complex platform

• Familiar with Peer-to-Peer technologies

• Good experience in interacting with databases (MySQL, MongoDB)

• Ability to quickly learn new technologies

• Good understanding of security practices

Nice to have

• Experience with blockchain integration

• Comfortable with high-availability concepts

• Ruby, Rust or C++ skills are a plus

• Other technologies of interest: Message queues (Redis), Caches and Job Queues

Apply Now:

Join Tether and Shape the Future of Digital Finance

Why Join Us?

As a Senior Backend Developer, you will be a part of the team that works on the development of Tether backend components

New Products and Features - Tether continuously strives to create innovative new features in order to provide the most professional trading experience for customers. These are developed and deployed using agile methodologies, to ensure the user experience remains the best in the industry.

Scalability - all backend services that power Tether must remain effortlessly smooth, responsive, and real-time for customers as the platform continues to scale to accommodate new user growth.

Security - Security is the most important feature. The Backend Development team is responsible for building all the services and core processes with the highest security principles and standard, in order to protect the safety of the entire user base.

• +6 years of experience working with Nodejs/JavaScript.

• Familiar with microservices architecture

• Have actively participated in the development of a complex platform

• Familiar with Peer-to-Peer technologies

• Good experience in interacting with databases (MySQL, MongoDB)

• Ability to quickly learn new technologies

• Good understanding of security practices

Nice to have

• Experience with blockchain integration

• Comfortable with high-availability concepts

• Ruby, Rust or C++ skills are a plus

• Other technologies of interest: Message queues (Redis), Caches and Job Queues

Apply Now:

About Aztec At Aztec, our goal is to add privacy to Ethereum. In the current public blockchain paradigm, users and entities unknowingly broadcast data in the public, compromising privacy and security to get trustlessness. Not only are unencrypted blockchains inherently privacy-exposing, they require significant redundancy to compute and verify the legitimacy of transactions. Implementing scalable encryption in a public blockchain paradigm requires cutting-edge math and engineering. Thankfully, our team of scientists and engineers invented Plonk, the industry-standard zkSNARK, and Noir, the universal language of zero knowledge. Now, we’re building a first of its kind Layer 2 with private smart contracts. This requires new cryptographic primitives, a zero-knowledge DSL for writing contracts, a privacy-friendly execution environment, a carefully designed set of circuits that prove the validity of the chain to L1, a decentralized block-building and proving mechanism, and a top-tier user and developer experience. And it’s now time to bring it to market. We’ve raised $125 million from industry-leading investors including a16z crypto, Paradigm, Variant, Consensys, and a_capital, and we’re growing quickly.Role Overview As a Front-End Software Engineer at Aztec Labs, you’ll be at the forefront of designing and developing intuitive, high-performance user interfaces for developers and users interacting with our zkApps, wallets, and protocol tools. You will collaborate with design, cryptography, and protocol teams to ensure seamless and secure user experiences in a highly technical, fast-paced environment. This is a unique opportunity to help define the UX of privacy in Web3 and shape how users interact with next-gen decentralized systems. Key Responsibilities

Design, implement, and maintain front-end applications for zk-powered tools and dApps. Initial projects in the first months will be designing and developing the frontends for our showcase payment dApp and sequencer staking bootstrap projects, critical for our mainnet launch this year. Work closely with product managers to align UI/UX with product requirements. Work closely with engineers to integrate aztec.js into the apps and provide critical feedback. Create and translate design mockups and wireframes into pixel-perfect, responsive interfaces. Write modular, testable, and maintainable code using modern JavaScript frameworks. Contribute to UI/UX discussions and drive decisions around user experience best practices. Ensure performance, security, and scalability of all front-end applications.

Required Qualifications

3+ years of experience building production-grade front-end applications. Strong proficiency in TypeScript, JavaScript, React or Svelte, and HTML/CSS. A deep understanding of frontend performance optimization, accessibility, and responsive design. A focused, and minimalist approach to engineering and design, avoiding bloat, and keeping the code easy for everyone to maintain. Strong communication and collaboration skills. You will be expected to develop a deep understanding of the requirements, and can then take the initiative to meet them with minimal management. Passion for blockchain technology and a strong desire to build user-first Web3 applications.

Nice to Have

Experience working with Web3 libraries (e.g., ethers.js, viem, wagmi). Familiarity with zero-knowledge proofs, privacy-preserving technologies, or blockchain protocols. Previous contributions to crypto wallets, block explorers, or dApp front-ends. Understanding of UX design principles and familiarity with Figma or design systems. Experience with end-to-end testing frameworks (e.g., Cypress, Playwright). Exposure to Layer 2 solutions and Ethereum development tools.

What we offer:

A highly competitive compensation package (including equity) Flexible and remote work environment based out of London 25 days holiday + bank holidays annually An opportunity to work at the cutting edge of blockchain with a world class cryptography and engineering team Aztec Labs is an equal opportunity employer and we value creativity, diversity, and intellectual curiosity. If you're passionate about leveraging your creative talents to make a real-world impact, and if you want to be part of a team that's shaping the future of digital privacy, then we would love to hear from you.

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About the Opportunity:

Creator Nation is a platform that enables Content Creators to fund their passion by combining the best elements of Web 2.0(Memberships etc) and Web 3.0(Collectibles, Tokens etc).

Job Role:

As the lead developer, you’ll be the brain behind crafting, developing, testing, going live and maintaining the system.

Requirements:

• Experience as Full stack developer or in a relevant projects.
• Expertise in Ethereum and Polygon Matic Blockchain, ICO, ERC-20, ERC-721, ERC-1155, IPFS, Solidity, Smart Contract development, Token development.
• Proficient in JavaScript, HTML, CSS. Full Stack Web development from start to finish.
• Hands-on experience with Moralis database.
• GCloud familiarity.
• Experience working with and implementing Stripe.
• Able to communicate in English.
• Proactive nature in solving problems and a willingness to learn and experiment new solutions.
• Fun to work with :)

Compensation:

• Equity driven. Regular compensation once we start generating revenue.

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Are you looking to be part of an early-stage venture and have proven experience in web3 content creation?

Location: Remote. Your team is based in Europe, India, and Canada.

Working Language: English

About the project

The #1 Crypto rewards platform where daily rewards meet smart investing.

Klink is a leading crypto wealth creation platform that innovatively combines quest-based task rewards with strategic investing opportunities on its multi-service platform. Klink provides a unique opportunity for its users to earn cryptocurrencies starting from $0 of personal investment and has already partnered with some of the leading companies in web3.

The company is backed by top-tier VCs in the US & Asia.

Tasks

We are now looking for an ambitious Fullstack Engineer to join the team. You will be joining a team of 20 (12 with technical background) with a live product with over 400,000 users already. As you work on building an innovative solution competing with products on a global scale, you will always be up to date on all the latest technologies and best practices, especially regarding the web3 space.

You will:

• Collaborate on the development of highly scalable Node.js products hosted on cloud-based infrastructure, facilitating access to DeFi opportunities for CeFi users.
• Construct and maintain internal and external RESTful APIs, ensuring swift and seamless updates to our products.
• Develop diverse platforms, optimizing for high throughput and faultlessness in execution.
• Integrate external providers from the FinTech and Blockchain industry to enhance our product offerings.
• Engage in regular communication with the technical lead and the entire team to discuss solutions and innovations.
• Actively participate in code reviews to uphold code quality, maintainability, and adherence to best practices.

Requirements

We do not focus on the time you have spent sitting in the lecture halls of this world but we want to understand what makes you feel comfortable, extraordinarily motivated and suitable to take over this position. We are looking for a team member who feels comfortable working remotely and in English in an international environment with a self-driven “Get stuff done” mindset.

• Experience in serverless architecture and microservices.
• Proven understanding of Blockchain and Web3 solutions.
• Proficiency in Javascript frameworks, with a focus on Typescript (Nest.js, Next.js, Node.js).
• Strong MVP-focused coding skills in any modern programming language.
• Solid understanding of cloud solutions, specifically Amazon Web Services (AWS).
• Good knowledge of data structures, algorithms, and relational databases.
• Familiarity with security best practices in cloud environments.
• Full-stack development experience with a strong proficiency in React.js, Next.js, and NestJS. Expertise in building dynamic, scalable, and high-performance web applications, ensuring seamless integration between front-end and back-end technologies for optimized user experiences and efficient server-side rendering.

Benefits

• Join at an early stage and be involved in decisions that shape the company’s future and the opportunity to build your own success story
• You will have a lot of autonomy and freedom in your role to innovate, test and fail
• Take a trip with an international team of highly skilled individuals who will always support you on this journey

If you want to know more about this opportunity please complete this application with your most recent work profile and we will get back to you ASAP.

We are excited to meet you!

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🚀 Whatnot

Whatnot is a livestream shopping platform and marketplace backed by Andreessen Horowitz, Y Combinator, and CapitalG. We’re building the future of ecommerce, bringing together community, shopping and entertainment. We are committed to our values, and as a remote-first team, we operate out of hubs within the US, Canada, UK, Ireland, and Germany today.

We’re innovating in the fast-paced world of live auctions in categories including sports, fashion, video games, and streetwear. The platform couples rigorous seller vetting with a focus on community to create a welcoming space for buyers and sellers to share their passions with others.

And, we’re growing. Whatnot has been the fastest growing marketplace in the US over the past two years and we’re hiring forward-thinking problem solvers across all functional areas.

💻 Role

• Growth engineers at Whatnot are responsible for expanding our new user funnel across buyers and sellers to accelerate the rapid growth of our marketplace. We focus on the full funnel, developing opportunities to grow traffic across multiple channels while also creating delightful new user experiences to activate and retain buyers and sellers for the long term.
• In this role, you will build out our core Incentivized buyer growth strategy, including gamified incentives and offer experiences to continue to accelerate Whatnot’s rapid growth. As a lead engineer, you will design and implement our core incentive management system from the ground up.
• You will have big ownership and velocity in order to significantly impact the company top-line metrics. We always prioritize the highest impact features and ship them quickly. You will have a lot of freedom to research and find new opportunities to drive the product direction.

👋 You

Curious about who thrives at Whatnot? We’ve found that low ego, a growth mindset, and leaning into action and high impact goes a long way here.

As our next Senior Software Engineer in Growth you should have 3+ years of software development experience, plus:

• Experience building E-commerce products.
• A bachelor’s degree in Computer Science, a related field, or equivalent work experience.
• Experience building scalable systems (we primarily use Python, Elixir, JavaScript).
• Excellent product instincts. You first think about users rather than the best technical solution.
• Proven track record of delivering user-facing features. You are known for shipping products and features lightning-fast.
• Experience working across the stack is nice to have, but not required!
• Good communication skills in both written and verbal English.

💛 EOE

Whatnot is proud to be an Equal Opportunity Employer. We value diversity, and we do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, parental status, disability status, or any other status protected by local law. We believe that our work is better and our company culture is improved when we encourage, support, and respect the different skills and experiences represented within our workforce.

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