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Full Stack Developer

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Reinvent the internet! We believe that decentralized technologies will be disruptive and a driving force in creating a new global system in finance, IoT, health, and many more areas. As a team of talented entrepreneur-mindsets, we aim to build a great MVP in the decentralized Data Cloud Business. Together we not only want to build a stunning product, but also a passionate, diverse, and healthy company and work environment. We aim to build one of the most impactful teams in crypto right here in Hamburg, Germany. Our ambition is to become the next big thing in blockchain. With top talents from the market, we will be a game-changing company spread across Europe.

Qubit9 is the next big thing of Kai & Christian Wawrzinek, two of Germany’s most successful entrepreneurs. After leaving Goodgame Studios more than 10 years after they started it, they have teamed up with the best people to think even bigger - this time as part of the decentralized web / blockchain revolution. We love the challenge of building something new with the potential to change the world. Do you want to join?

As a Full Stack Developer (m/f/d) located in Hamburg, Germany you develop from scratch a new product. You are responsible to develop and maintain a scalable tech stack. Besides that, you design and implement important and technically challenging tools/systems. You should share the same values about a clean environment, high code quality, low bug tolerance, and usage of the latest technologies with us. The core of your job is to implement new ideas, to co-develop the product, and to provide the best UX to our clients.

Your Responsibilities

  • Help to make critical decisions on the tech stack
  • Design and build tools to ensure our systems are virtually limitlessly scalable
  • Work in close collaboration with the PO and engineers on architecture questions
  • Design and build components/tools/systems such as user login systems, token custodial solutions, backend monitoring, automated testing, and much more
  • Experience in building User-Journeys
  • Building Mock-ups
  • Designing Usability-tests
  • Introduce tools and workflows for version control and code quality assurance
  • Setup a multi-level quality assurance system including automated testing, QA within the team supervision, and similar measures
  • Read documentation, source code, and consult with protocol maintainers
  • Brainstorm with the founders and the PO on how to overcome technical challenges smartly
  • Play a crucial role in the fulfillment and constant refinement of our highly ambitious vision

You should bring

  • Experience of large technological challenges
  • Background in working with large engineering teams
  • Senior-level React/Redux (or another front-end library) development experience
  • Familiarity with databases and full-stack frameworks (NodeJS/Express, CSS, HTML, Typescript)
  • Experience with Blockchain specific frameworks and languages (i.e. Solidity, EVM, and/or smart contracts)
  • Experience with BackEnd technologies such as Rust
  • Hands-on attitude, top coding skills
  • Experience in working in an agile environment
  • Ability & willingness to learn new coding skills as needed
  • You are able to succinctly & clearly communicate your ideas
  • Good design understanding, some UI/UX experience more generally
  • You stay up to date with the latest releases & best practices
  • You know how to write bug-free & secure code, and are familiar with standard ecosystem tools & security audit techniques
  • Ensuring Code Quality
  • You have excellent written and verbal communication skills


  • Being with the company from the very beginning
  • Power to influence the company’s culture and the opportunity to bring your own ideas
  • Working together with top talents to become the next big thing in blockchain
  • Experience truly fast growth - work with us on the journey to become THE next impactful player in the blockchain industry
  • A company culture which is supporting work-life balance
  • In our office, you find motivating colleagues, healthy brain foods (such as a variety of berries, nuts, yogurt, or avocados), good coffee, and no bad stuff
  • Flat hierarchy where all colleagues together work on the same mission
  • Shape our great place to work together with us

Next Steps

  1. Please submit your Linkedin Profile or CV together with the application form
  2. After checking your application, we invite candidates fitting our requirements to a first screening during which we will also tell you about us.
  3. When passing, we will initiate further interviews to get a better picture of you and your skills albeit striving for a fast and lean process.
  4. Very soon you might get an offer call, a written offer letter, and one signature later you join the team.
Apply now

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  • Hamburg

Job type


Apply now

Please let Qubit9 know you found this position on Cryptocurrency Jobs as a way to support us so we can keep providing you with quality crypto jobs.

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