• Solid experience working with Unreal Engine in production-level environments.
• Extensive experience using C++.
• Experience using nDisplay is a very big plus.
• Strong knowledge of Unreal Blueprints.
• Previous experience creating games or VR experiences in Unreal Engine, and well-versed in large-scale development using C++.

Apply Now:

About us

We are a group of product managers and developers from companies such as Amazon.com and Twitter. firefly is the leading native DEX on Manta Pacific (and $800M TVL L2).

About the Role

We’re looking for a full-stack engineer to lead our development & maintenance of our DEX platform, as well as help in related areas such as: subgraphs, routing API, corporate site.

You might enjoy working here if you’re looking for…

• Small remote-first team. You’ll be an early team member helping shape our vision, culture, and technical practices.
• A+ colleagues. Our leadership team includes alumni from Amazon.com and Twitter.
• Competitive compensation
• An exciting opportunity to play a key role in a start-up; your input will be crucial in building the dev team.

What we’re looking for…

• Development Experience: Prior experience building frontend and backend solutions in crypto-native projects deployed on an EVM mainnet.
• 4+ years of software engineering experience, with at least 2 years as a full stack developer. Extensive experience in Typescript and React is required; experience in Solidity, Python or bash is a plus.
• Communication: strong written and oral communication skills.
• Familiarity with blockchain fundamentals, the EVM, and decentralized finance (DeFi) protocols.
• Leadership: you will be managing and coordinating the work of other engineers and contractors.
• Product-minded: in a startup, we expect our Lead Eng. to play a constructive role in defining the product and ensuring requirements are complete
• Passion for Crypto: whether it’s building, investing, yield farming, minting, voting, or other activities, your enthusiasm for the crypto space is evident.
• Mindset: a proactive, can-do attitude, ready to tackle challenges head-on in a startup environment.

People who do well here tend to…

• Plan, architect, write, test, and comment their code well
• Be able to clearly explain the designs they implement
• Respond to (and act on) feedback during code review
• Participate as part of the team
• Work well against deadlines
• Communicate in both written and spoken forms

Who We Are:*

Ethena Labs is building the first ETH based yield-bearing synthetic dollar. Arthur Hayes is a founding advisor and the team has deep experience across traditional finance and crypto engineering from firms such as Cerberus, Wintermute, Flow Traders, Deribit, Paradigm, Aave, Blockdaemon and Kaiko. We are backed by every major exchange and trading entities in the space.

What we are Doing:

We are building derivative infrastructure to enable Ethereum to transform into the Internet Bond via delta-neutral derivatives positions, to create the first crypto-native, yield bearing synthetic dollar: sUSDe.

We believe creating a synthetic dollar which is not reliant on existing banking infrastructure is the single most important problem to solve and largest opportunity in crypto today.

USDe will form the first part of a broader ecosystem of products we are building including fixed and floating rate internet bonds and composable repo leveraged markets.

Join us!

The ideal candidate would be in one of the following time zones: EST, GMT, CET, EEST

The Team:

We are a small team of 16, 8 of which are engineers.  Collectively our DNA, so far, is a strong mix of high performing Web3 and Tradfi experience including, Wintermute, Blockdaemon, Capital One, Flowtraders, Bebop, SIX, Aave. The team is geographically distributed but connects daily and everyone has distinct responsibilities.  We take engineer onboarding seriously and will provide all the support you need to get up and running. We are collaborative, lean and thrive on the mission to bring such a disruptive product to market as USDe, the Internet Bond and the further supporting elements of this new ecosystem.

Who We are Looking For:

• An Engineer who is passionate about building products/applications within Defi.
• Individual who is excited by the opportunity to join a founding core team and drive a product from zero to one.
• At least 2 years of experience in developing front-ends for decentralized applications and can provide examples of prior work.
• An individual who is curious and always looking to learn new concepts on the overlap between frontier technology and financial concepts.

Responsibilities:

• You will work on our React Web3 application, which enables users to mint and stake USDe, as well as our off-chain backend python infrastructure which listens for events, manages custody positions, routes orders, etc.
• Working directly with custody and exchange providers to build information on the ongoing solvency and equity positions of internal accounts.
• Creative license to push the boundaries of Defi design.
• Collaborate with the team and cross-functional partners on all aspects of product development including smart contract back-end engineers and mentor team members to refine their technical and architectural skills

Requirements:

• Strong knowledge of full-stack, modern Javascript: React and Typescript
• Strong Python skills
• Strong knowledge and demonstrated experience working with GraphQL
• Experience with our frameworks - NextJS and TailwindCSS.
• A strong design sense including attention to detail matching a design in frontend implementation as well as good design judgment and ability to operate without a fully fleshed out design
• Expert knowledge of Web3 libraries and tools like, Viem, Wagmi, The Graph
• Understanding of concepts like caching, edge functions, RPC providers that are critical to performant frontend development in Web3.
• Fluent English, both written and spoken

Our Engineering Stack:

• Frontend: React, NextJS, Wagmi, Viem, TailwindCSS
• Backend: Python, AWS, GraphQL, Vercel

$125,000 - $175,000 a year

If you subscribe to the mission of separating the dollar from the state, then we want to hear from you!

We look forward to receiving your application and will be in touch after having a chance to review.

In the meantime, here are some links to more information about Ethena Labs to help you check us out:

Website Twitter LinkedIn Discord

About

We’re building Omni: a platform allowing developers to deploy applications across all rollups without fragmenting liquidity. We’re looking for early team members to help us bring this ambitious vision to life.

We’re a team who already built a platform that processed over $70M leading to our $18M fundraise from top investors including Pantera, Two Sigma Ventures, Coinbase Ventures alongside angel investors including Stani Kulechov (founder of Aave), Sandeep Nailwal (cofounder of Polygon) and more. In addition to this we have over $4B deposited to secure Omni on mainnet.

We are growing rapidly and we need ambitious and experienced team members to join us to help scale Ethereum’s future.

About the role

We are seeking a Blockchain Site Reliability Engineer (SRE) to ensure the robustness and operational integrity of the Omni networks and blockchains around the clock. This role is crucial for maintaining the performance and reliability of our services as we scale.

Responsibilities

• Monitor and manage the Omni platform’s infrastructure and applications to ensure high availability.
• Implement automation tools for deployment, monitoring, and scaling within the cloud environment.
• Develop and maintain disaster recovery plans, including regular testing and updating procedures.
• Collaborate with development teams to enhance system reliability and performance.
• Respond to incidents, perform root cause analysis, and prevent recurrence.
• Manage on-call rotations for 24/7 incident response and resolution.
• Continuously improve system security postures and compliance protocols.
• Document system design and operational procedures.

Requirements

• 3-5+ years of experience in site reliability engineering or similar roles with a focus on 24/7 uptime.
• 1+ years of experience managing blockchain infrastructure: running full nodes, supporting public RPC endpoints, ensuring network security and monitoring network performance.
• Proficient with cloud services such as GCP, AWS or Azure.
• Experience with automation and scripting using tools like Terraform, Kubernetes and Ansible.
• Strong background in monitoring tools like Prometheus, Grafana, or similar.
• Ability to handle on-call responsibilities reliably and effectively.
• Bachelor’s or higher degree in Computer Science, Engineering, or related field.
• Location: Must be in the New York (EST) or Europe (CET) time zones.
• Overlap hours: Available daily from 9 AM to 12 PM EST for team collaboration.

Competencies

• Autonomous — specifically seeks to take greater ownership and responsibility and thrives in their personal growth by doing so
• Action oriented — we are looking for people who take action by default, consistently driving forward progress without asking for permission
• An engineer in both thought and implementation — they must be able to design architecture and see it through to implementation
• Adaptable — thrives in ambiguity, able to quickly iterate and push forward as the business dynamically expands
• Highly intelligent — learns quickly and can participate in abstract intellectually engaging conversations
• Effective communicator — clearly articulates ideas and engages in debates in a productive manner that leads us to making better decisions

Nice to Haves

• Experience building a system with a distributed consensus mechanism
• Solid understanding of the Ethereum Virtual Machine

Benefits

Our benefits include competitive compensation, token packages for all employees, regular team off-sites around the world and unlimited PTO. In addition, you’ll join a team of high-caliber people innovating at the frontier of crypto that work collaboratively to help one another accelerate their personal growth.

Values

We are a mission driven company. We believe deeply that through software engineering we can build a self-sovereign society. In our day to day, we make decisions based upon our company values and operating principles:

Company values

• Customer centricity
• Long-term orientation
• Courage

Operating principles

• High-trust & autonomy
• Kindness & respect
• Collaboration
• Humility & low-ego
• Transparency
• Data driven
• Precise communication
• Results oriented
• “Kerplunk”: clean handoffs and acknowledgement of ownership between team members

The future belongs to all of us, independent of our origins. Omni is an equal opportunity employer and does not discriminate on the basis of race, religion, color, sexual orientation, gender or any other status protected under federal, state or local law.

About Hylé

Hylé is pioneering the future of blockchain infrastructure with ZK technology. Our approach promises a streamlined, efficient blockchain, maintaining its key features: censorship resistance, permissionless value, and reliable decentralization.

Backed with $5M from leading VCs, we’re building our team, currently led by founders Sylve (CEO) and Lancelot (CTO). Our goals are ambitious - B2B use cases within 4 months, series A within the year, and going live on mainnet within 24 months.

Programming Skills

The initial team will be 3-4 devs and the CTO, so product ownership will be essential.

This role target a principal engineer with extensive web3 blockchain experience at the protocol / infrastructure level. The ideal candidate has more than 10 years or programming experience, including a substantial amount in specifically web3 stacks such as:

• Backend programming: Rust / Go
• Shipped a blockchain mainnet
• Worked on bridges across different chains
• Worked with one of Cosmos SDK / Polkadot / Geth / …
• DevOps / Infra (either on bare metal or containerised)

Other skills

• Willing to work in a venture start-up with high risk - this is a go big or go home project
• Highly adaptable - we will try to remain rather nimble, and while the overall goal is well specified the path to get there is subject to change
• Good with feedback, communication, transparency
• Business & delivery oriented
• English mandatory, French appreciated

Key responsibilities

The core technical objective is twofold: shipping B2B use-cases in the coming months, then expanding that a permissionless mainnet blockchain with 24 months. You can expect:

• At first working on a Cosmos SDK app written in Go, augmenting it with verifiers for various ZK proving schemes (those mostly written in rust).
• Exporting the implications of our new architecture by writing our own apps
• Bridging the state of the chain to/from other networks such as Ethereum
• Working on support for various wallets
• Investigate the need to switch away from the Cosmos SDK, and if this path is taken, participate in writing a new blockchain stack. If not, modify the Cosmos SDK accordingly.

Compensation & benefits

• Highly competitive salary + Equity
• Alan Green Mutuelle
• Computer of your choice
• Flexible remote policy (but no fully remote hire at this time)
• Socials - company retreats, weekly gathering

Other important info

We share an office in Paris (Le Peletier) with other tech companies, and would prefer avoiding fully remote hires at this time. Flexible remote is very possible.

Interview process is straightforward - a quick initial screening call, an in depth technical dive to answer any questions, a technical architecture interview, and a “fit” interview with my cofounder.

To apply

Interested in joining us in this exhilarating adventure? Send your resume to email.

Apply Now:

Job Responsibilities

• Develop smart contracts according to business needs
• Responsible for compilation and deployment of smart contracts
• Optimization and improve architecture, security, performance, algorithms, etc. of the smart contracts
• Maintain relevant technical documentation
• Keep studying trends and direction of blockchain technology

Job Requirements:

• Bachelor’s degree or above, over 5 years of software development working experience
• Proficiency in programming language solidity or go, and related project experience on Ethereum
• Familiar with Lido, SSV will be a plus
• Familiar with the code implementation of leading blue-chip DeFi protocols and LSD/LSDFi protocols will be a plus
• Good communication and teamwork skills, strong logical thinking ability
• Fluent in Chinese，in English will be a plus

Apply Now:

• We make enterprise web applications for record labels (music industry)
• Looking for full-stack Ruby engineers (Rails-like or Python/Django + want to learn Ruby)
• Would like 2 or more years of professional web development experience
• Positions are full time, fully remote and/or we have an office in Los Angeles
• Starting salary 100-150k (depending on experience) + benefits

• Participating in a weekly planning meeting where we review our goals and prioritize work to be done for the coming week.
• Participating in daily engineering-only meetings (roughly 30min) where the team collaborates on technical decisions, resolving issues, and reducing complexity.
• Writing tests: we write mostly full-stack integration tests and use a single testing framework for all parts of the code.
• Writing application code: mostly Ruby, some HTML, some Javascript. CSS is mostly handled by visual design.
• Reviewing code: We do round-robin code reviews as a means of knowledge sharing. All pull requests are reviewed by another engineer. You’ll take turns reviewing everyone else’s code and they will take turns reviewing yours.
• Deploying code: We deploy small changes to production code multiple times per day. Deployments are automated with lots of fail-safes and we rely on third party services for devops as much as possible.
• Maintaining code: Maintenance is a part of all code changes but we also plan specifically for improving code quality and updating to newer conventions, techniques, and technologies. You will also be reproducing and fixing the occasional bug.

• Estimating work to be done. Instead we try to break work down into small enough chunks that they can be done quickly.
• Reporting progress. Work is done when it’s deployed. Instead we try to reduce the scope of work that is growing complex.
• Stakeholder meetings. While agile processes are all about open channels of communication we find too much can be overwhelming. We have technical product managers who work with stakeholders instead, allowing everyone else to focus on their work while getting their questions answered.

• Relational database concepts such as: foreign keys, indexes, normalization and denormalization, SQL queries.
• Writing Ruby code in an MVC web framework. We don’t use Rails but we follow many of the same conventions. We’ve had success bringing people on from Python/Django so if you have Python experience and would like to learn Ruby it might be a good fit.
• Some familiarity with Javascript. We push as much behavior as possible to the server but features often do have small client-side components.
• Writing tests. We practice integration-test-heavy outside-in test-driven development. If you’ve practiced any sort of test-driven development you will pick it up fast.

• OpenPlay Music is a monolithic application backed by a PostgreSQL relational database. Heavy operations are processed asynchronously by scalable background workers that notify clients via WebSockets. At present we have plenty of room to scale.
• Our server-side code is MVC-structured and built on Sequel (ORM), Sinatra, and HAML. If you’re familiar with Rails (or similar MVC frameworks) you’ll find a lot of similarities and many of the same conventions here.
• On the client side we use StimulusJS to apply bits of dynamic behavior where it improves the user experience, most of which ultimately requests updates from the server.
• There are currently around 2500 full-stack browser-based integration tests covering every feature from user input to expected output. CI runs on every git push and completes in about 15 minutes.
• We do things typical of web applications like:
  • Store data in, and query from, a relational database (PostgreSQL)
  • Index data and query it with filtering and full text searching (Elasticsearch)
  • Handle slow tasks with background processing
  • Push asynchronous updates to clients with WebSockets
  • Export XML files, PDFs, CSVs, Excel spreadsheets, and other formats that just won’t seem to go away
  • Import data from Excel spreadsheets, (music-industry standard) DDEX XML, JSON, and various other sources
  • Communicate with lots of external systems across all manner of bespoke APIs
  • Provide JSON APIs for our customers to build on top of
  • Use git for version control, build features in branches, and take turns reviewing pull requests
  • Run everything on cloud infrastructure
  • Rely on service providers for devops as much as possible (Heroku, etc)

• Starting salary 100-155k depending on experience
• Medical, dental, and vision insurance
• Whatever tools, services, books, etc you need to do your job
• Low stress environment: The industry we’re in is comparatively low scale and high value. While we work with lots of data we avoid some of the technical issues and constant urgency you might find with consumer applications.
• Good work/life balance: We expect that everyone works full time (40 hours/week). We do sometimes have deadlines and we haven’t always limited scope appropriately. The last time we worked late nights was in 2019 for about a week. The time before that was in 2016 for about 3 weeks. Our most recent deadline we met two weeks early.
• Flexible work and vacation schedule. You are free to work the hours that work best for you (outside of our scheduled meetings) and we don’t have a set limit on vacation days.
• Free to work remote. We’ve been doing remote work as long as we’ve been around and our process is built around it. Some of our team is permanently remote, others work out of the office part time.
• Office near the beach in Santa Monica you can use any time.
• Free lunch at nearby restaurants when you’re in the office. Some of which are delicious.

• Prior work experience that looks like it might be a good match for what you’ll be doing at OpenPlay.
• Some understanding of how to program well. Maybe a computer science degree or other academic background. Code contributions you can point to. Blog articles you wrote. A particularly enlightening reddit comment.

• Actively ship production code to the web products
• Work closely with your dedicated product team
• Participate in product discussions to shape the product roadmap
• Have the opportunity to work on new and exciting features that will impact millions of lives

• Experience. You've built and ship products that have scaled to thousands or millions of users
• Customer obsession. You are passionate about the field and have the desire to build high quality product that serves customer needs
• Speed. You work quickly to generate ideas and know how to decide which things can ship now and what things need time
• Focus. We’re a high-growth startup with a busy, remote team. You know how and when to engage or be heads down
• Collaboration. You know how to inspire, play, and negotiate with opinionated designers, marketers, and PMs
• Tech Stack: Vanilla JS, ReactJS, Redux, Firebase, Typescript

• A fast-growing environment where you can help shape the culture
• An entrepreneurial crew that supports risk, intuition, and hustle
• A hands-off approach so you can focus and do your best work
• The opportunity to make an impact in a transformative industry
• A competitive salary, a collegiate atmosphere, and a commitment to building a great asynchronous culture

• Answer support questions related to our WordPress themes and plugins (Sydney Pro, Botiga Pro. and Merchant Pro) via our email ticketing system (HelpScout)
• Create CSS and PHP snippets for customers who request small customisations
• Communicate bugs/improvements with our developers

• You know WordPress inside out
• You are familiar with WooCommerce, and willing to learn more
• Strong HTML, CSS and PHP and preferably some familiarity with Javascript.
• An understanding of browser console errors and debugging via developer tools
• Patient and polite when dealing with support queries
• Good written English (not necessarily native, but clear and professional)

About

Crypto Bot is one of the biggest products in Telegram for buying, selling, exchanging and transferring cryptocurrency serving tens of thousands of users each month.

Ever since the launch of Crypto Bot, our goal has been to create the most powerful crypto platform in Telegram.

We are now looking for a talented Lead QA Engineer and Software Tester who is aligned with our vision and can join us on the mission to revolutionize the financial industry.

Responsibilities

– Develop the infrastructure for automated testing.

— Identify, document, and analyze bugs, providing detailed reports to the development team.

— Write comprehensive test documentation and execute test cases effectively.

Requirements

— At least 2 years of experience in software testing and QA engineering.

— Proficiency in TypeScript, and Javascript.

— Familiarity with continuous integration (CI) practices, end-to-end (E2E) testing, and manual software testing.

— Basic understanding of cryptocurrency concepts

— Excellent communication and collaboration skills to effectively work with both technical and non-technical team members.

— Demonstrated ability to develop strategic test plans and influence engineering best practices within an organization.

Why it's a fantastic opportunity

— Engage in a variety of technical tasks, ranging from straightforward to complex.

— Join a vibrant team of young professionals; our average team member is 25 years old.

— Benefit from a quick time-to-market culture with minimal bureaucracy, allowing for rapid feature rollout.

— Learn from a highly qualified and experienced team that includes top university graduates, former IT giants’ employees, and international engineering contest winners.

— Make a significant impact on the cryptocurrency industry and help shape the future of Web3.

Apply Now:

Who We Are

The Solana Foundation is a non-profit based in Zug, Switzerland, dedicated to the adoption, decentralization, and security of the Solana network. Solana is a high performance blockchain that can deliver a fast and friendly user experience, without sacrificing security. The Solana Foundation is working to realize a world where individuals own their data, use permissionless networks, and transfer information and value freely around the world. We are looking for talented people who are willing to jump right in and use their expertise to help the ecosystem build.

What We Do

The Ecosystem Engineering team is a horizontal team of strategically deployed engineers that live at the intersection of business, technology, and innovation in the Solana ecosystem. We support teams small and large by providing technical guidance, architecture review, and maximize our leverage by driving adoption of technical public goods through code and coordination.

The Opportunity

We're looking for a technical lead to drive the adoption of standards and specifications for the Solana payments & Commerce ecosystem. This role will also focus on assisting teams in implementing new capabilities while helping them achieve their business goals.

To be successful in this role

You will be:

• Driving new standards and specifications for payment protocols and integrations

• Supporting ecosystem teams as they adopt new standards: you will be the technical point-of-contact for payment teams and integrators

• Interfacing with payment processors: you will be collaborating directly with prospective clients and leading integration of payment processors using Solana capabilities into their systems

• Communicate with external clients to help them realize the technical improvements that can be made when building on Solana

• Interfacing with developers: you will be collaborating directly with developers building on Solana to provide architecture review, collect their feedback, and inform on protocol development

You ideally have:

• 5+ years working in fintech-, financial services, payments, and / or e-commerce-focused teams operating at scale

• Experience building an OMS or ledger related to accounting or payment reconciliation

• Deep understanding of industry-standard payments flows

• 5+ years of experience working on product-focused engineering teams 

• Extensive experience designing and operating APIs

• A deep interest in the impact of blockchain technologies

Bonus points:

• Experience building payment orchestration systems

• An understanding of core payment protocols (MT103, MT104, ISO8583)

• Experience working with the Solana protocol

• Experience contributing to open-source projects

• Experience as a CTO, Founding Engineer, or Engineering lead

• An entrepreneurial spirit and appetite to problem-solve

• An interest in improving Developer Experience (DevEx)

• Expertise in the Payments and/or Commerce domain

Apply Now:

• developing, scaling and maintaining some of our backend services including the API, reports and other infrastructure services that manage our product and logistics worldwide
• working with multiple teams day to day to bring more value to Toggl’s users, covering customer-facing web and native applications and public APIs
• designing, breaking down, and completing projects of a medium to large scope with high-level productivity
• looking for technical problems of existing system/product without guidance and offering solutions
• leading projects with a small group of people, such as hosting weekly meetings, communicating with other partners and stakeholders

• Strong backend engineering experience in Go
• Significant professional experience with distributed systems, PostgreSQL, and Google Cloud Infrastructure
• Experience with software engineering best practices (e.g. unit testing, code reviews, design documentation)
• Experience with performance and optimisation problems, particularly at large scale, and a demonstrated ability to both diagnose and prevent these problems
• Ability to work cross-teams and improve cross-functional relationships which will facilitate ongoing projects
• Effective communication skills, ensuring regular consensus with peers and clear status updates.
• Strong collaboration skills across the company to define, design, build, and improve the product.
• Experience with data warehouse, analytics systems, Kubernetes at scale, and system architecture at scale.
• Eagerness to contribute to the engineering team's growth, including interviewing and mentoring junior engineers, and providing precise, actionable feedback to peers.
• Proficiency in the English language, both written and verbal, is required for success in a remote and largely asynchronous work environment

• Freedom to choose when and how much you work - we only measure results
• 24 days of paid time off a year, plus your local holidays
• In-person meetups for team-building (expenses covered)
• 4-6 weeks paid sabbatical (depending on the tenure)
• Laptop budget up to €2,500 and it renews every 3 years
• €2,000 budget to set up your home office, and additional €300 every year after 3 years of tenure
• €250 per month for co-working space membership and/or internet service at home
• €4,000 per year contribution to use for training, workshops, and conferences
• €2,000 per year contribution for any equipment or services to improve and/or maintain your physical and mental health
• Support for buying tools you need for doing your best work (even eyeglasses if you need a new pair)

• Our JavaScript developers are sharp technical experts with the ability to think like product owners- being able to advocate for code quality as a long term strategic investment while knowing when to adapt a more start-up mentality to deliver rapid business value. They drive architecture and implementation decisions, mentor other engineers, and stay up to date with the latest JavaScript techniques and trends as part of the collective Whitespectre JavaScript brain trust. 
• Whitespectre operates on a fully-modern tech stack- toolset includes React.js/Next.js/Nest.js with Typescript, REST/GraphQL etc. Working smartly is important to us; automation, dynamic environments spin up with new feature branches and slack bot integrations control our production releases (CI/CD, AWS, Github workflows).
• We follow an agile 2-week sprint methodology with Product, UI/UX and Engineering within the team to align closely with business stakeholders and incrementally build and release new functionality.
• The majority of our projects involve building greenfield applications and our delivery teams typically own products end to end - your thinking and contribution make a big impact!
• You can read more about life in our JavaScript engineering team in the posts by our Senior Engineer, Eneko. 

• Competitive salaries, with payment in USD
• Annual Performance & Salary Reviews, with proactive career management
• 20 Days PTO & 3 Charity Days annually
• Funded face-to-face meet ups in Barcelona, as well as, South America and Asia
• Assisted Relocation package 
• Flexible working hours for efficient teaming in a 100% remote environment (proudly remote-first for 10 years!)
• Free English classes & educational expenses support
• Generous Employee Referral Plan
• Team Fitness and Charity Initiatives

• Great company environment - check out Glassdoor
• Personalized onboardings
• Opportunity to contribute to company-level initiatives
• Work with a broad range of best-in-class technologies
• Cross-company knowledge groups - improve your expertise, share your learnings and work with different technologies and tools
• Regular brown bag learning sessions
• An emphasis on Work-life balance

• The challenge of collaborating with business stakeholders and Product Managers to advocate for technology solutions while bearing in mind the tradeoffs for business results
• The responsibility of designing new architectures and being confident to justify your technology decisions. (Plus debating and recognizing when a colleague has an even better idea!)
• The opportunity to go outside your core expertise and strengthen skills with other technologies and learn more
• To solve problems that can’t be addressed by just searching Stack Overflow
• An environment where excellent communication skills (both verbal and written) are valued and honed.
• A culture where people from different backgrounds interact, collaborate and reach a shared goal

• 6+ years of experience with TypeScript/JavaScript, 4+ years with React.js and Next.js/Nest.js/Node.js
• Advanced English level, excellent verbal and written communication skills
• Experience contributing to technical decision-making within a team
• Can work full-time with a significant crossover with the core hours: 11am - 7pm Central European Time
• Live outside of the US. Please, no recruitment agencies.

• Apply by completing the form below - and we’ll get back to you. Candidates enjoy meeting our JavaScript Technical Leads and discussing interesting coding challenges as part of our selection process
• Or email us with any questions on email 
• Our process includes the following:
• A 30/45 minute video call with our Talent Acquisition team to understand your experience & expectations
• A 60 minute technical interview to explore your technical capabilities
• Final interview(s) with the company leadership to confirm fit & finalize your offer

Department environment

We aim to achieve a balance between corporate culture and start-up culture, and at the same time be close to product solutions. Therefore, we divide our department into small self-sufficient teams that can make decisions on their own. This applies to all stages of product production: from conceptualisation to architecture, to build, to release, to iteration and support.

You'll do lots of research and develop your knowledge regarding cryptocurrency and blockchain including data processing, protocols integration etc. In addition to this, you'll be surrounded by friendly high-level specialists who are ready to share their knowledge.

The team is currently working on several major product changes that will improve client experience with cryptocurrency interaction like secure cryptocurrencies management or simplifying user flows when interacting with Decentralised Finance (DeFi) protocols.

Role Responsibilities

• Support and improve current services that handle over 50 blockchain protocols with more than 500 cryptocurrency assets.
• Research and building new blockchain integration and solutions, including blockchain data processing, cryptocurrency protocols integrations, DeFi integration, etc.
• Support and solve problems from clients and stakeholders.

Your experience, skills and knowledge

• Professional experience in building software with an OOP language: Scala, JS/TS (Node.js), Kotlin, Java, or Go.
• Familiarity with relational databases such as PostgreSQL.
• An understanding of the critical importance of unit tests, well-versed and able to build automated tests of server-side code.
• You’re professionally curious and willing to develop yourself as a multi-stack developer. You are ready that you should research and use technologies and programming languages that you didn’t face before.

Desirable

• Proficiency with containerisation and DevOps practices.
• Experience developing Smart Contracts.
• Familiarity with working on blockchain development (cryptocurrency wallets, blockchain data processing, DeFi etc).
• Experience in building and optimising systems for working with large amounts of data, both at the database level and interactions between services.
• Experience with Go.

Our core tech stack

For this position, you will predominantly work with Scala and Typescript.

• Software development languages: Scala, Javascript/Typescript (Node.js)
• Storage: PostgreSQL, Mongo DB, Clickhouse
• Backend Frameworks: Spring, Akka HTTP
• Frontend Frameworks: React, ElectronJs
• Interservice communication: RabbitMQ
• Architecture: Service-Oriented Architecture (SOA)
• Infrastructure: AWS, Terraform, Ansible, Docker, Mesos/Marathon container orchestration, Consul, Nginx, GoCD by ThoughtWorks CI/CD, Prometheus, Kibana, Grafana

The benefits offered

• Holidays: 27 days per annum paid holiday, in addition to bank holidays
• Seniority Days: One additional day of paid time off is awarded per year of service (up to three years)
• VitalityHealth
  • Medical Insurance: Copper provides all employees with individual cover. Medical history is disregarded, and a 24/7 virtual GP is available (£100 excess per person per year)
  • Dental Insurance: Comprehensive dental cover for preventative, restorative and emergency treatment
  • Audiology Cover: Employees can claim back up 80% of costs, up to £300, for any hearing tests or hearing aids
  • Optical Cover: £500 optical cover (through Vision Express) or 80% reimbursement up to £300 for any other optician
  • Menopause Support: Unlimited support for those experiencing symptoms of the menopause, such as video consultations with a dedicated menopause practitioner
  • Vitality services also include an additional £100 for minor diagnostic tests and private prescriptions, including home diagnostics.

• Pension up to 10% matched Contribution to our Company Pension Scheme via Smart Pensions
• Home Working Energy Support Scheme
• Cycle to Work
• Life Insurance cover: Four times your base salary
• EAP: access unlimited mental health consultations and contact a 24/7 confidential helpline for emotional support.
• ClassPass
• Unmind
• Sponsored Learning and Development opportunities
• Regular company events and social activities

In return for everything you can bring to Copper, we can offer you an exciting, challenging role in a fast-growing and dynamic business, with career opportunities and welcoming working environment.

If you think you have everything we're looking for and more, then we'd love you to apply for the opportunity.

Apply Now:

• A strong frontend engineer with experience in React
• A proponent of user-centric development with an eye for design and user experience.
• Someone who is able to put themselves in the user’s shoes and contribute to discussions around product development. In other words, your coding abilities are complemented by a solid understanding of business models, business goals, user journeys, value propositions, and the ability to discuss product features in detail.
• Someone with outstanding communication skills.
• A software engineer with solid debugging and testing skills.
• Strong work ethic and pride in the quality of your code. 
• Enjoy working closely with others in a cross-functional team.

• An independent and profitable business that is doubling in size. 
• More than 12 years experience in designing, building, and optimising high-growth online marketplaces.
• Technically complex projects that often present unique business challenges that need solving.
• A distributed company, headquartered in London, UK, with a strong documentation and iteration culture that supports remote team members based in Europe, Africa, the Middle East, and the Caucasus region.
• We take full ownership of marketplace projects in close collaboration with our clients. We’re a close-knit in-house team who love working together. We don’t outsource core functions.

• Strong fundamentals in JavaScript, TypeScript, React, HTML, and CSS.
• Expert-level knowledge of and proven experience working with JS libraries such as  React, Redux for state management, React Query, etc.
• Expert-level knowledge of and proven experience working with component-based architecture (React components, Storybook, Design system, Lerna, NPM/Yarn).
• Previous experience working with Micro Frontend 
• Proficient with modern testing frameworks (e.g. Cypress)
• Strong debugging and testing skills.
• Strong communication skills in English.
• Experience in backend development with Node.js (Express or Nestjs) would be a great bonus.
• Experience in designing UX/UI journeys would be a great bonus.

• ReactJS and React Native
• NextJs 
• Bootstrap
• NestJS
• MongoDB, PostgreSQL, ElasticSearch
• AWS
• Figma
• Storybook
• Lerna / Bit.dev
• Strapi Headless CMS