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Senior Smart Contract Engineer at Qubit9

Behind Qubit9

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 we started it, we have teamed up with the best people to think even bigger - this time as part of the decentralised web / Blockchain revolution. We love the challenge of building something new with the potential to change the world. Do you want to join?

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. We bring successful entrepreneurs and developers together to launch & scale disruptive, decentralized applications. We aim to build one of the most impactful teams in crypto right here in Hamburg, Germany. 

As our full stack engineer your are at the core of the engineering team working directly with the founders on product development. You’ll have an opportunity to shape the tech stack significantly, help other engineers finding their ideal area of flow and code hands-on on everything you feel comfortable with (or where you're up for leaning something new).

Job details

We are looking for an experienced Senior Smart Contract Engineer to help us build the next generation of the decentralized web. You join the team at the earliest stage during which we iterate new ideas and build POCs. We provide deep business experience and the infrastructure to start from ideation to go-to-market. Once a core team is established, we begin the second phase during which we use our business experience to evolve a POC into a groundbreaking product creating real impact. 

Initial Responsibilities


    • Shape a deep tech team and be part in deciding the tech stack
    • Enrich the business model from your engineering view
    • Set the motivation level and company culture
    • Implement and design smart contracts and tests
    • Extra points if you are also comfortable or interested in contributing to frontend development.



    • Min. 3 years of experience in Web3 development
    • A deep understanding of crypto, i.e. the Ethereum Virtual Machine
    • Prior experience deploying complex smart contract systems (i.e. Solidity)

Bonus Qualifications


    • Autonomous & Self Starting: You proactively seek to understand the scope of the current mission & all its requirements. You read documentation, source code, and consult with protocol maintainers to deliver results.
    • Detail & Security Oriented Thinking: You stay up to date with the latest releases & best practices.
    • Smart Contract Expertise: You know how to write bug-free & secure smart contracts, and are familiar with standard ecosystem tools & security audit techniques.
    • Empathetic Mentor: You are an empathetic mentor, and enjoy sharing your knowledge & learnings with other motivated developers.
    • Excellent written & verbal communicator: You have excellent written and verbal communication skills. You are able to succinctly & clearly communicate your ideas.

Please submit your LinkedIn profile and/or CV.Add relevant certificates, recommendation letters and/or anything you deem relevant.


a month ago

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