About The Role:

The Software Engineering team at Shardeum is responsible for delivering the Shardeum Mainnet, and developing the smart contract platform, the consensus layer and the protocol layer. We focus on building scalable, performant, secure and reliable software that can be downloaded by thousands of node operators to actualize the Shardeum network. We are in search of a highly talented, innovative Lead Blockchain Engineer that has hands-on, practical Ethereum Virtual Machine (EVM) experience - preferably with another L1 blockchain.

If you enjoy solving complex computer science problems, are passionate about what you work on, are a perfectionist who wants to build things the right way, and are persistent about finishing what you started, then you're the kind of person we are looking for. You will be working with equally talented and innovative individuals with the goal of building incredible software with the potential to change the world.

What You'll Be Doing:

• Provide technical structure to teams and work closely with management and stakeholders to define strategic road maps for our EVM based Smart Contracts platform.
• Manage individual, EVM based projects, priorities, deadlines and deliverables with your technical expertise.
• Mentor and train other team members on design techniques, coding standards and EVM basics.
• Contribute to the architecture and implementation of complex software components on the EVM.
• Take on end-to-end ownership of critical software components related to our EVM based smart contracts platform.
• Design and develop innovative new consensus and protocol software.
• Ensure performance optimization, and making scalability / reliability improvements to the software.
• Resolve issues, debugging errors and fixing code to improve the reliability and security of Shardeum software components.
• The tech stack you will be using is: Nodejs, TypeScript, SQLite, Postgres, React and Vuejs
• The development environment will be: Linux, Git, AWS, Docker and VS Code.

What We're Looking

• Extensive experience designing, implementing and maintaining an EVM based Smart Contract platform.
• You know what high quality code looks like and know how to foster an environment that creates it.
• Fluency with algorithms and data structures.
• The ability to quickly learn new languages and technologies.
• The ability to write clean yet efficient code.
• The Creativity to come up with proof of concept from high level design, even in an often ambiguous environment.
• Self motivated to set priorities and methodically make progress toward goals.
• The ability to communicate effectively and convey your ideas when discussing technical topics with team members.
• Bachelor's Degree in Computer Science or a related field.

We'd Love If You Have:

• Experience working on all levels of a Layer 1 blockchain.
• Experience with concurrency, parallelism and distributed systems.
• Experience with consensus protocols and other blockchains.
• Experience with Node.js and TypeScript, or languages like C, C++, Rust or GO.
• Experience writing a smart contract on a blockchain.
• Experience running a node in a blockchain network.
• Read the Bitcoin and Ethereum white papers.

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

Apply Now:

STON.fi stands at the forefront of decentralized finance, operating as an Automated Market Maker (AMM) DEX on the TON blockchain. Our platform sets itself apart with virtually zero fees, low to zero slippage, and a user-friendly interface, seamlessly integrated with TON wallets. In the future, we are proud to offer a suite of advanced features such as cross-chain swaps, gasless transactions, and a commitment to the DAO governance model, ensuring community-centric decision-making and continuous innovation.

As we expand, we are searching for a Senior Fullstack Engineer to join our team to focus mostly on our marketing products, helping us promote the product that we are building in various ways. Usual tasks will include creating bots and Telegram apps to bring new users into the main product - and what not!

Responsibilities:

• Develop and maintain high-quality, scalable, and reusable code for Telegram mini apps using React and Node.js.
• Build and refine user interfaces for better user experience, with a focus on responsive design.
• Collaborate with Product Designers to translate designs into functional user interfaces, ensuring high performance.
• Design and implement robust backend services in Node.js to support front-end features.
• Integrate front-end applications with backend services using RESTful APIs and WebSocket connections.
• Debug application issues across the stack (frontend and backend) and push updates to improve functionality and user experience.
• Stay up-to-date with new technology trends, applications, and protocols in both the React and Node.js ecosystems.

Requirements:

• 3-5 years of experience in full-stack development, including proficient knowledge of Node.js and React.
• Strong understanding of JavaScript and TypeScript.
• Experience with front-end development tools such as Babel, Webpack, NPM, etc.
• Familiarity with state management libraries (e.g., Redux, MobX).
• Proficient in CSS and CSS preprocessors like SASS or LESS, with a strong grasp of responsive design principles.
• Ability to architect and implement scalable and performant front-end systems and features, as well as robust backend services.
• Experience in integrating front-end applications with backend services using RESTful APIs and WebSocket.
• Experience with modern build pipelines and tools in both frontend and backend environments.
• Excellent written and verbal communication skills in English (B2 or higher level)
• Ideally placed in CET timezone or ready to adapt working hours to this timezone.

Would be a plus:

• Experience in Telegram mini application.
• Experience in decentralized finance (DeFi) and Blockchain technologies.
• Experience in PostgreSQL.

What we offer:

• A remote work environment with flexible hours.
• Competitive salary.
• A team of industry experts who are passionate about innovation in blockchain and financial technology.

Apply Now:

Apply Now:

We’re looking for a Staff Software Engineer to join the Crypto Data Foundation - Core team!

Our team has built the fundamental Web3 infrastructure, the data layer, by delivering an open-source, industry-leading suite of data availability solutions, ChainStack, to ensure efficient and scalable access. ChainStack is designed to ingest, index, and parse vast amounts of crypto data with minimal latency, providing a comprehensive solution to a widespread industry challenge. Come join us!

What you’ll be doing:

• Architect and develop distributed systems
• Provide technical structure to teams and work closely with management and stakeholders to define strategic roadmaps
• Manage individual projects priorities, deadlines and deliverables with your technical expertise
• Mentor and train other team members on design techniques and coding standards
• Design and implement foundational infrastructure components used by every engineering team in production (e.g. dynamic configuration, secrets storage, container orchestration, etc)
• Write high quality, well tested code to meet the needs of your customers

What we look for in you:

• 8+ years of experience in software engineering
• Very strong in distributed systems or data systems. If you are experienced with Crypto, it’s a big plus!
• You’ve experienced architecting and developing solutions to ambiguous problems with significant impact
• You’re passionate about building an open financial system that brings the world together

Nice to haves:

• You have gone through a rapid growth in your company (from 10 to 100s of engineers)
• You have experience with Blockchains (such as Bitcoin, Ethereum etc.)
• You have experience decomposing a large monolith into microservices
• You’ve worked with Golang, Ruby, Docker, Sinatra, Rails, Postgres
• You’ve built financial, high reliability or security systems

Job #: GPBE06US

#LI-Remote

Apply Now:

Bitbo is looking for a full-time developer, fully remote.

Looking for someone who knows:

• Python
• Postgresql
• Docker

Ideally someone with knowledge about Bitcoin and querying blockchain data.

About Bitbo:

Bitbo is one of the leading Bitcoin websites, with over 1 million visitors per month.

Please email us with:

• Your experience with Bitcoin and coding.
• Why do you want to work at Bitbo?
• What about this job appealed to you?
• What do you find exciting about Bitcoin?

Accountable is looking for an exceptional Backend Engineer to help us build the #1 trustless on-chain finance Platform.

Who are you:

If you are a highly autonomous BUILDER, capable of collaborating well with others, and passionate about web3, we’d love to speak with you. Accountable is not going to build itself: it’s you who will do this (together with us). Be proactive and a true leader in your field. Below other specifications:

• App Development (e.g., Python, Flask, RESTful APIs, PostgreSQL, SQLAlchemy, Redis, Authentication/Authorization)
• Production Experience (e.g., Microsoft Azure, App Service, Virtual Networks, Containers)
• Web3 Experience (Blockchain explorer APIs, RPC node interaction, transaction monitoring)
• The use of Large Language Models (e.g., via Cursor) in your development practices to augment development speed is a plus.
• Experience managing source code, interacting with repos, performing local deploys
• Some Frontend experience is nice to have
• Fluent English speaker

About Accountable:

Accountable is an on-chain finance platform that empowers institutional and retail investors to lend, borrow, and manage assets securely while preserving privacy. We aim to remove trust barriers, reduce fraud, and unlock new opportunities for efficient and safe financial growth.

Why Join Accountable?

• High-Impact Role: Be a core part of a mission-driven company at the forefront of DeFi innovation.
• Build together with the bright minds. Expect a steep learning curve.
• Unmatched career opportunities. This role will start out as an individual contributor, and can lead to management opportunities over time, if desired.
• Fully Remote Work: Flexibility to work from anywhere, with optional co-working spaces in Amsterdam, Dubai and Romania.
• Competitive Compensation: Enjoy a competitive salary package with regular performance reviews.
• Team Retreats: Join us for all-expense-paid team retreats at exciting destinations worldwide.

How to Apply:

Send the following information to email:

• Cv including the project you are the most proud of (we double click on it during the interview) (1 page max)
• Motivation (1 page max)
• Github (optional)
• Linkedin (optional)

We look forward to hearing from you.

Engineering@Easygo Easygo leads the world in crafting top-tier entertainment experiences. Within our engineering organisation, we foster a continuous learning environment, constantly pushing the boundaries of large-scale software design and development. Our culture revolves around fostering growth, nurturing learning, and upholding excellence in engineering, ensuring we consistently set the benchmark for engineering mastery. Why join us? Are you a passionate and ambitious software engineer ready to dive into an environment that fosters innovation, continuous learning, and professional growth? We're seeking talented individuals who are eager to tackle complex problems, build scalable solutions, and collaborate with some of the finest engineers in the entertainment industry.

Complex Projects, Creative Solutions: Dive into intricate projects that challenge and push boundaries. Solve complex technical puzzles and craft scalable solutions. Accelerate Your Growth: Access mentorship, training, and hands-on experiences to level up your skills. Learn from industry experts and gain expertise in scaling software. Collaborate with Industry Leaders: Work alongside exceptional engineers, exchanging ideas and driving innovation forward through collaboration. Caring Culture, Career Development: We deeply care about your career. Our culture prioritises your growth with tailored learning programs and mentorship. Embrace Challenges, Celebrate Success: Take on challenges, learn from failures, and celebrate achievements together. Shape the Future: Your contributions will shape the future of entertainment.

If you're passionate about growth, innovation, and working with the best, we'd love to have you on our team! Key Responsibilities:

Actively engage in hands-on coding, testing, debugging, and troubleshooting to ensure code quality, scalability, and maintainability. Write efficient, scalable, and maintainable code, adhering to coding standards and best practices. Lead technical discussions and propose solutions that drive team performance and contribute to team and company OKRs. Innovate within the team by pushing for improvements and driving constructive changes to enhance team performance and efficiency. Analyse complex problems and provide effective solutions, contributing to team goals and initiatives. Lead and independently complete medium-sized projects or components from start to finish. Identify opportunities for improvement and take initiative in technical discussions. Share knowledge and best practices with the team, fostering a collaborative and learning-oriented environment. Mentor junior engineers by providing guidance and constructive feedback to support their growth. Collaborate with stakeholders, product managers, and engineering teams to effectively communicate technical concepts.

Minimum Qualifications: 

Bachelor's/Master's degree in Computer Science or equivalent practical experience. 4+ years of hands-on experience in software engineering, with a primary focus on Backend development. Experience with Node.js, GraphQL, Docker, Cloud services (e.g., AWS, Azure, Google Cloud) and related technologies. Experience with Database technologies such as PostgreSQL, MySQL, Elasticsearch for data storage and management. Experience with Messaging systems such as Nats, Kafka, RabbitMQ, SQS, etc.. Experience with Monitoring and logging tools (e.g., Datadog) Strong understanding of code architecture and design principles. Excellent problem-solving skills and the ability to thrive in a fast-paced, dynamic environment. Strong communication skills for effective collaboration with teams and stakeholders. Analytical mindset to address complex technical challenges and devise innovative solutions. Positive attitude and eagerness to learn new technologies to grow as a full-stack engineer.

Preferred Qualifications:

Experience with Svelte + SvelteKit or other server-side rendering frameworks (e.g. React + NextJS, Vue + Nuxt, Quasar, etc) Proficiency in JavaScript fundamentals, Design Patterns, Subscriptions (WebSockets, Pub/Sub), TypeScript, GraphQL, Storybook and related technologies. Experience with CI/CD tools (e.g., AWS Code Pipeline, Github Actions) for automating the deployment process.

Some of the perks of joining us:

Championing the Engineering Excellence to influence cultural change across the organisation. Working alongside our team of Full-Stack Engineers in a cloud native tech stack including AWS, Microservices, Large-Scale Distributed Systems, K8's, Go, Terraform, Typescript, Svelte, GraphQL, Nodejs and React. Exposure to building global, large-scale volume products which operate at thousands per second frequency. EAP access for you and your family Access to over 9,000 courses across our Learning and Development Platform  Paid volunteer day Two full-time barista’s who will make your daily coffee, tea or fresh juice! Daily catered breakfast Massage Wednesdays - we get professionals to do this! Team lunches and happy hour in the office from 4pm on Fridays Fun office environment with pool tables, table tennis and all your favourite gaming consoles Help yourself drinks fridges and snack shelves

We believe that the unique contributions of everyone at Easygo are the driver of our success. To make sure that our products and culture continue to incorporate everyone's perspectives and experience we never discriminate on the basis of race, religion, national origin, gender identity or expression, sexual orientation, age, or marital, veteran, or disability status. We are passionate about providing a workplace that encourages great participation and an equal playing field, where merit and accomplishment are the only criteria for success.

Apply Now:

About Trojan

Trojan is at the forefront of crypto trading technology, known as the largest Telegram trading bot for facilitating over $10 billion in volume traded by more than 50,000 daily active users. We deliver seamless on-chain trading experiences with advanced tools such as DCA & limit orders, sniping, and automatic wallet copy-trading. Our platform sets the standard in speed, innovation, and reliability. As we scale further, we aim to maintain our reputation as a market leader in crypto trading innovation.

Why Join Us?

At Trojan, we’re pushing the boundaries of on-chain trading technology. Joining our team offers you the chance to work on products that already serve a large and active user base, collaborating with top-tier engineers in a fast-paced and dynamic environment. Working at Trojan means having fast paced releases with your work being live in the hands of tens of thousands of users as soon as it’s complete.

Role Overview

We’re seeking a Backend Developer with proven expertise in building scalable and efficient backend systems using NodeJS, TypeScript, and relational databases like Postgres. The ideal candidate is a proactive developer who thrives on tackling complex challenges and ideally shares a passion for on-chain trading. As backend developer you’ll build new innovative features, bring on improvements to current products and resolve user requests.

Key Responsibilities

• Backend Development: Design, develop, and maintain robust backend systems using NodeJS and TypeScript to support real-time trading functionalities.
• Database Management: Query data from Postgres and Opensearch databases to analyze and display large-scale, real-time statistics.
• Blockchain Interactions: Read data from the Solana blockchain or send transactions to enable new trading features.
• Collaborate Across Teams: Work closely with designers, product teams and users to align backend solutions with platform objectives.
• Performance Optimization: Ensure backend systems deliver top-tier speed and efficient database queries without compromising on reliability.
• Problem Solving: Identify, debug, and resolve complex technical issues to maintain smooth platform operations.
• Code Quality: Uphold best practices by writing clean, efficient, and well-documented code.

Requirements

• Technical Expertise:
  • Proficiency in NodeJS and TypeScript with 5+ years of experience in backend development.
  • Strong command of relational databases like Postgres or MySQL, including design and optimization for high-performance high-reliability use cases.
  • Experience in building backend systems serving a significant user base.

• Autonomy: Proven ability to work independently while driving projects to completion.
• Team Collaboration: Strong communication skills to work effectively within a cross-functional team.
• Trading Insight: Passion or experience in on-chain trading; being a part-time trader on Solana is a significant plus.

Preferred Experience

• Experience working on backend systems for crypto trading platforms, DeFi applications, or other data-heavy services.
• Familiarity with memecoin trading and the Solana ecosystem.
• Knowledge of CI/CD pipelines and development tools for streamlined deployments.

What We Offer

• Remote Flexibility: Work from anywhere on your schedule.
• Challenging Projects: Solve complex problems with cutting-edge technology in the trading space.
• Impactful Role: Shape backend systems powering one of the largest trading platforms on the market and shaping the experience of tens of thousands of daily users.
• Collaborative Culture: Join a team that values innovation, efficiency, and collaboration.

Apply Now:

The Open Network Society acts in the interests of the community by supporting initiatives that help achieve The Open Network's mission - put crypto in every pocket.

We are looking for an experienced and motivated Backend developer to join our team and contribute to the growth of the TON ecosystem.

Responsibilities and Goals

You will work in a startup environment with high individual responsibility and freedom to work remotely, being responsible for the development of the backend services that implement various web-3 integrations, serve client-side applications, and provide API for TON Society partners:

• Playing a major role in all stages of development: from design to launch
• Building new features from scratch and supporting existing ones

Qualifications

• Highly skilled in Go (3+ years of professional experience)
• Thorough understanding of PostgreSQL and Redis
• Profound experience with distributed task queues
• Experience with backend scaling techniques and load testing
• Experience with GCP or any other cloud provider, Terraform, and CI/CD tools are highly desirable
• Knowledge of k8s and Helm is an advantage
• Hands-on experience with monitoring tools, i.e., Grafana and Sentry
• Practical knowledge of basic blockchain data structures, e.g., hashing, Merkle trees, etc.
• Experience in development on TON blockchain is a plus
• B1+ English level (we use English in task management tools and to write all the documentation)

Apply Now:

SCOPE OF THE ROLE

This is an opportunity to work on a wide range of different challenges across multiple teams with the opportunity to learn in many different business domains. The work in this role will directly benefit many different stakeholders across the business. contributing to strategic business objectives as well as improvements to our stack. You will be collaborating with cross-functional teams to understand project requirements and contribute to the overall system design, working closely with developers and business stakeholders in this exciting position.

Technologies in common use include: Django + DRF + Celery, Python 3.11, AWS EKS for Kubernetes, Amazon Aurora PostgreSQL, Amazon ElastiCache for Redis and Amazon MSK for Kafka.

Role and Responsibilities

• Develop and maintain efficient Python-based applications and components, ensuring high-quality code and adherence to coding standards
• Maintain and enhance in-house Python shared libraries, ensuring their reliability and effectiveness
• Write robust, maintainable, thoroughly-tested and well-documented code to meet project goals and deadlines
• Troubleshoot and resolve software defects and technical issues to minimize disruption in revenue-generating processes
• Collaborate with cross-functional teams to define and implement new features
• Participate in code reviews and incorporate feedback
• Maintain and enforce good quality internal documentation

Skills Required

• 8+ years of software development in Python
• Experience building, deploying and managing scalable and resilient web applications
• Deep knowledge of relational databases and SQL
• Thorough understanding of web technologies and protocols (e.g. HTTP, WebSocket)
• Clean and efficient coding >
• Comfortable writing automated tests for own code and extending coverage for existing code
• Experience taking ownership of projects and features end to end, from inception to delivery
• Experience of providing production support to business critical services
• Comfortable with ownership & autonomy
• Ability to work with people at all levels of the organization
• Excellent communication skills both in Polish and English - B2/C1 level

Skills Desired

• Experience with Django+DRF or another commonly used Python web framework
• Experience with Celery, PostgreSQL, Kafka, Redis or gRPC
• Some experience with Linux, Docker, Kubernetes and/or AWS
• Interest in crypto and/or trading
• ReactJS experience / front end

Opportunity:

• To grow at a fast pace as we push you to constantly give the best of yourself.
• Work with the latest technologies and products to maximize productivity.
• Great career development opportunities in a growing company.
• Being part of the future of finance technology and having a meaningful impact on B2C2’s future, making it an exciting and rewarding company to be part of.
• A dynamic workplace with a great balance of hard work and fun.
• Twice yearly performance reviews and discretionary bonuses.
• Ability to make a difference.
• Forward thinking and dynamic culture.
• Being part of the future of finance technology and having a meaningful impact on B2C2’s future, making it an exciting and rewarding company to be part of.
• A dynamic workplace with a great balance of hard work and fun.
• Twice yearly performance reviews and discretionary bonuses.
• Ability to make a difference.
• Forward thinking and dynamic culture.

Apply Now:

SCOPE OF THE ROLE

This is an exciting opportunity in which successful candidates will work in one of our Java teams.

Role and Responsibilities

• Develop and maintain efficient Java-based applications and components, ensuring high-quality code and adherence to coding standards
• Maintain and enhance in-house shared libraries, ensuring their reliability and effectiveness
• Write robust, maintainable, thoroughly-tested and well-documented code to meet project goals and deadlines
• Troubleshoot and resolve software defects and technical issues to minimize disruption in revenue-generating processes
• Collaborate with cross-functional teams to define and implement new features
• Participate in code reviews and incorporate feedback
• Maintain and enforce good quality internal documentation

Skills Required

• 5+ years of software development in Java
• Deep understanding of object-oriented programming concepts and some design patterns
• Clean and efficient coding >
• Comfortable writing automated tests for own code and extending coverage for existing code
• Experience taking ownership of projects and features end to end, from inception to delivery
• Experience of providing production support to business critical services
• Comfortable with ownership & autonomy
• Ability to work with people at all levels of the organization
• Excellent communication skills both in Polish and English - B2/C1 level

Skills Desired

• Experience with asynchronous event-driven network applications based on Netty
• Experience in a selection of low GC techniques in Java
• Knowledge of relational databases and SQL
• Understanding of web technologies and protocols (e.g. HTTP, Websocket)
• Experience with PostgreSQL, Kafka, Redis or gRPC
• Some experience with Linux, Docker, Kubernetes and/or AWS
• Comfortable coding in Python
• Interest in crypto and/or trading

Opportunity:

• To grow at a fast pace as we push you to constantly give the best of yourself.
• Work with the latest technologies and products to maximize productivity.
• Great career development opportunities in a growing company.
• Being part of the future of finance technology and having a meaningful impact on B2C2’s future, making it an exciting and rewarding company to be part of.
• A dynamic workplace with a great balance of hard work and fun.
• Twice yearly performance reviews and discretionary bonuses.
• Ability to make a difference.
• Forward thinking and dynamic culture.

Apply Now:

SCOPE OF THE ROLE

This is an opportunity to work on a wide range of different challenges across multiple teams with the opportunity to learn in many different business domains. The work in this role will directly benefit many different stakeholders across the business. contributing to strategic business objectives as well as improvements to our stack. You will be collaborating with cross-functional teams to understand project requirements and contribute to the overall system design, working closely with developers and business stakeholders in this exciting position.

Technologies in common use include: Django + DRF + Celery, Python 3.11, AWS EKS for Kubernetes, Amazon Aurora PostgreSQL, Amazon ElastiCache for Redis and Amazon MSK for Kafka.

Role and Responsibilities

• Develop and maintain efficient Python-based applications and components, ensuring high-quality code and adherence to coding standards
• Maintain and enhance in-house Python shared libraries, ensuring their reliability and effectiveness
• Write robust, maintainable, thoroughly-tested and well-documented code to meet project goals and deadlines
• Troubleshoot and resolve software defects and technical issues to minimize disruption in revenue-generating processes

• Collaborate with cross-functional teams to define and implement new features
• Participate in code reviews and incorporate feedback
• Maintain and enforce good quality internal documentation

Skills Required

• 5+ years of software development in Python

• Experience building, deploying and managing scalable and resilient web applications
• Knowledge of relational databases and SQL
• Understanding of web technologies and protocols (e.g. HTTP, WebSocket)
• Clean and efficient coding >
• Comfortable writing automated tests for own code and extending coverage for existing code
• Experience taking ownership of projects and features end to end, from inception to delivery
• Experience of providing production support to business critical services
• Comfortable with ownership & autonomy
• Ability to work with people at all levels of the organization
• Excellent communication skills both in Polish and English - B2/C1 level

Skills Desired

• Experience with Django+DRF or another commonly used Python web framework
• Experience with Celery, PostgreSQL, Kafka, Redis or gRPC
• Some experience with Linux, Docker, Kubernetes and/or AWS
• Interest in crypto and/or trading
• ReactJS experience / front end

Apply Now:

Team/ Role Paragraph: The Data Platform team builds and operates systems to centralize all of Coinbase's internal and third-party data, making it easy for teams across the company to access, process, and transform that data for analytics, machine learning, and powering end-user experiences. As a BE engineer on the team you will contribute to the full spectrum of our systems, from managing foundational processing and data storage, to building and maintaining scalable pipelines, to developing frameworks, tools, and internal applications to make data oriented services easily and efficiently available to other teams and systems.

What you’ll be doing:

• Build new services to meet critical product and business needs using Golang.
• Design scalable systems to solve novel problems with modern cloud technology and industry best practices.
• Articulate a long term vision for maintaining and scaling our backend systems and the teams running them.
• Work with engineers, designers, product managers and senior leadership to turn our product and technical vision into a tangible roadmap every quarter.
• Write high quality, well tested code to meet the needs of your customers. Debugging extremely difficult technical problems, and making systems and products both work better and are easier to deploy, own, operate and diagnose.
• Review all feature designs within your product area and across the company for cross-cutting projects. Be an owner of the security, safety, scale, operational integrity, and architectural clarity of these designs.

What we look for in you:

• You have at least 5+ years of experience in software engineering.
• You’ve designed, built, scaled and maintained production services, and know how to compose a service oriented architecture.
• You write high quality, well tested code to meet the needs of your customers.
• You’re passionate about building an open financial system that brings the world together.
• You possess strong technical skills for system design and coding
• Excellent written and verbal communication skills, and a bias toward open, transparent cultural practices.

Nice to haves:

• You have gone through a rapid growth in your company (from startup to mid-size).
• Experience with growth experiments or A/B testing frameworks.
• You have experience with Blockchain technology (such as Bitcoin, Ethereum etc..)
• You’ve worked with Golang, Docker, Rails, Postgres, MongoDB or DynamoDB.

Job Id : GPIN05IN

Apply Now:

• Experience Required: Minimum 5 years in software development
• English Level: Upper-Intermediate or higher

About the Project:

Metaplex is a cutting-edge NFT marketplace platform on the Solana blockchain. This role requires an experienced Senior Rust (Go will be +) Developer to drive backend development, contribute to innovation, and ensure the platform’s scalability and performance.

Key Responsibilities:

Team Collaboration:

• Collaborate with the backend development team, ensuring high standards in code quality, product scalability, and timely delivery.
• Foster a collaborative environment and mentor team members in best practices.

Code Development & Review:

• Write efficient, clean Rust code, and conduct thorough code reviews to uphold development standards.

Communication:

• Maintain effective communication with American partners, articulating ideas and technical solutions clearly and persuasively.

Product Architecture:

• Architect scalable, high-performance, and secure systems from the ground up.
• Design and optimize backend architecture for performance, reliability, and resilience in high-traffic environments.
• Apply advanced knowledge in software architecture patterns, microservices, and RESTful API design.

Testing & Quality Assurance:

• Take ownership of the product testing process, implementing testing strategies and maintaining rigorous QA standards.

DevOps & Infrastructure:

• Oversee deployment, infrastructure, and CI/CD pipeline to ensure a smooth development process.
• Strong understanding of networking concepts, including load balancers and routers, with experience handling high-load applications (>1000 RPS) and tuning performance for scalability.

Preferred Qualifications:

Database Expertise:

• Proficiency in database management, schema design, and optimization for large-scale data.
• Experience with RocksDB and some PostgreSQL, rather than traditional big data stacks.
• Knowledge of data synchronization protocols over gRPC.

Knowledge of Go:

Familiarity with Go programming is valued, particularly for cross-functional collaboration and product enhancement.

Blockchain Knowledge:

• Previous experience working with blockchain projects, especially on Solana, is highly preferred.

Advanced Technical Skills:

• Strong grasp of data structures, algorithms, and asynchronous architectures.
• Experience designing solutions for distributed systems in high-growth startups, handling scaling challenges associated with evolving business needs.

Skills and Experience:

• Technical Expertise: At least 5 years in software development, with deep knowledge of Rust (Go will be+).
• Product Ownership: Demonstrated experience in taking ownership of product development, testing, and DevOps integration.
• Analytical and Problem-Solving Skills: Strong decision-making abilities with the capacity to defend technical choices effectively.
• Team Collaboration: Excellent interpersonal skills for working within an international team and collaborating across time zones.
• Passion for Blockchain: A genuine interest in blockchain technology and a drive to remain at the forefront of industry developments.

Yelay is a permissionless and non-custodial toolbox serving as the base-layer protocol for fixed income in DeFi. Yelay’s smart contract stack allows anyone to create automated, diversified, and risk-reward-optimized yield-farming portfolios. Partners like launchpool platforms, wallets, exchanges, and DAO management tools can leverage our SDK to offer users ‘Earn’ products based on Yelay’s smart vaults.

We are seeking an exceptional Senior Node.js Backend Engineer with hands-on Web3 expertise to develop core Yelay protocol backend infrastructure and a TypeScript SDK.

Key Responsibilities:

• Plan, design, implement, and maintain backend services using Node.js.
• Improve and expand existing backend services.
• Build a TypeScript SDK that enables integration by external parties.
• Lead projects from scoping to delivery.
• Develop and maintain Web3 integration services for multiple blockchains.
• Implement robust monitoring, logging, and alerting systems.
• Conduct code reviews and provide constructive feedback.
• Guide clients through the SDK integration process and assist in technical onboarding of new clients, including the setup and configuration of Yelay products tailored to client-specific needs.
• Proactively contribute to developing and maintaining a comprehensive knowledge base (FAQs, guides, and tutorials).
• Promote Yelay products both in-person and through industry-standard platforms and communities.

Requirements and Skills:

• Node.js expertise with at least 3 years of experience.
• Proficiency in Express.js.
• Advanced TypeScript skills.
• Experience with database technologies such as PostgreSQL and Redis.
• Deep knowledge of AWS (e.g., Amplify, EC2, ECS).
• Experience with containerization and CI/CD pipelines.
• In-depth understanding of DeFi, blockchain technology, and the Web3 ecosystem.
• Proficiency in Ethereum development (e.g., Ethers.js).
• Experience with The Graph / Subgraph.
• Familiarity with DeFi protocols and a native DeFi user experience.
• Strong customer service orientation and the ability to empathize with client needs and challenges.
• Excellent verbal and written communication skills with the ability to explain complex technical issues clearly and concisely to non-technical audiences.
• Ability to work effectively both independently and within a team, collaborating across multiple departments.
• Fluency in English, both written and spoken.

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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

We are looking for intellectually curious, highly motivated individuals to become foundational members of our Core Machine Learning team. You will help drive the development of Whatnot’s machine learning operations and work with machine learning engineers across the company to build scalable design patterns that can be repeatedly used to achieve key business goals. Our ideal candidate has experience in spinning up ML platforms e.g. real-time model serving, approximate nearest neighbor retrieval, high-concurrency and low-latency scaling, feature stores, and model lifecycle monitoring. They are also willing and able to flex into an applied research role to develop models that leverage their own components.

What you'll do:

• Drive the development of the machine learning platform roadmap, staying abreast of emerging business needs that the machine learning platform can help address.
• Enhance our machine learning infrastructure--increase reliability, reduce latency, and continually improve the developer experience.
• Develop scalable machine learning design patterns that make it easy for machine learning scientists and engineers to safely deploy models to production.
• Improve model training, management, and monitoring
• Take a leading role in deploying ML models on business critical surfaces & flows.
• Define and advance our technical approach to scalable machine learning.
• Flex outside your comfort zone to help take on new challenges that emerge

👋 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 Software Engineer, Machine Learning you should have 5+ years of experience, plus:

• Bachelor’s degree in Computer Science, Statistics, Mathematics, Software Engineering, a related technical field, or equivalent work experience.
• 2+ years of professional experience setting up machine learning platforms–model serving, features stores, model registries, training pipelines, etc.
• 1+ years of professional experience developing software in Python
• Software engineering experience with a track record of applying practical methods to solve real-world problems on consumer scale data.
• Ability to work autonomously and drive initiatives across multiple product areas and communicate findings with leadership and product teams.
• Experience with operational, search, and key-value databases such as PostgreSQL, DynamoDB, Elasticsearch, Redis.
• Firm grasp of visualization tools for monitoring and logging e.g. DataDog, Grafana
• Familiarity with cloud computing platforms and managed services such as AWS Sagemaker, Lambda, Kinesis, S3, EC2, EKS/ECS, Apache Kafka, Flink, Spark.
• Professionalism around collaborating in a remote working environment and well tested, reproducible work.
• Exceptional documentation and communication skills.
• Experience in applied statistical and machine learning fields e.g. Recommendations, Search, Fraud & Anomaly Detection, Experimentation and Causal Analysis preferred.

💰Compensation

For US-based applicants: $205,000 - $275,000/year + benefits + stock options

The salary range may be inclusive of several levels that would be applicable to the position. Final salary will be based on a number of factors including, level, relevant prior experience, skills and expertise. This range is only inclusive of base salary, not benefits (more details below) or equity in the form of stock options.

🎁 Benefits

• Flexible Time off Policy and Company-wide Holidays (including a spring and winter break)
• Health Insurance options including Medical, Dental, Vision
• Work From Home Support
  • $1,000 home office setup allowance
  • $150 monthly allowance for cell phone and internet

• Care benefits
  • $450 monthly allowance on food
  • $500 monthly allowance for wellness
  • $5,000 annual allowance towards Childcare
  • $20,000 lifetime benefit for family planning, such as adoption or fertility expenses
• Retirement; 401k offering for Traditional and Roth accounts in the US (employer match up to 4% of base salary) and Pension plans internationally
• Parental Leave
  • 16 weeks of paid parental leave + one month gradual return to work *company leave allowances run concurrently with country leave requirements which take precedence.

💛 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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