Careers & Contact





We're hiring!

We are looking to rapidly expand our team in the coming months, so if you or someone you know is experienced or interested in building blockchains for enterprise, please get in touch. While we have a variety of advertised roles coming out, don't be discouraged if you don't see one specific to you - we are always happy to have a discussion about your ambitions if you are hungry to grow, have a great attitude, and love breaking things!


TO APPLY: Please submit your CV to


Front-end Developer


  • Design, Development, and Maintenance of High Performance Web Applications to power client-facing Blockchain solutions.
  • Work with a team of Front End Developers to develop reusable React components to be used across our web applications.
  • Prototype Original User Interfaces and UX Workflows for client and developer-facing products.




  • MSc or BSc in Computer Science or related discipline.
  • Well versed in writing clean, and idiomatic code with an emphasis on testing, and maintainability.
  • In-depth knowledge of:
  • React, Redux, JavaScript (ES6), Node.
  • HTML5 and SVG. We'll be making lots of shapes.
  • Responsive Web Design. CSS Grid and Flexbox are part of your toolbox.
  • CSS & JavaScript Animation (GSAP), you're aware of the pros and cons of each. The GPU is our best friend, when used correctly.
  • Tooling to improve development workflows: ESLint, Babel, Flow, etc. You keep upto date with all the new features.
  • WebSockets and REST. Perhaps even GraphQL.
  • Git. Expect to talk about and be proud of your biggest Git disaster!


Ideal additional knowledge:

  • WebGL

  • Python (>= 3.6) or other backend technologies.

  • Containerisation and Deployment.

  • Content Delivery Networks.

  • Cloud Hosting Environments.




    Back-end Developer


    • Develop and maintain Qadre’s blockchain framework. This will include.

      • Requirements gathering and design of new features.

      • Building high performance, distributed systems using Python 3.6/Asyncio

      • Ensure code is tested and proven correct using Test Driven Development

      • Write and maintain operational documentation and tutorials

      • Plan and Execute strategies for Cloud based deployments

    • Build internal tooling for the deployment and analysis of deployed technologies.

    • Assist other developers building solutions on the framework.



    • MSc or BSc in Computer Science or related discipline/experience.

    • Well versed in writing clean and idiomatic code with an emphasis on testing, and maintainability.

    • In-depth knowledge of:

      • Python 3.6 and asyncio

      • Unix Environments (you should be able to operate from the terminal)

      • TDD (py.test, tox)

      • ZMQ, WebSockets, HTTP 1.1 and 2.

      • TCP/UDP Socket Programming with I/O polling

      • SQL (Preference on Sqlite3 and PostgreSQL, beyond basic SQL)

      • Git (You should be able to resolve conflicts without a GUI)

      • Symmetric and Asymmetric Cryptography, Block Ciphers

      • Docker


    Ideal additional knowledge:

    • Deployment tooling (SaltStack)

    • Cloud Computing (AWS, DigitalOcean, Google Compute Engine)

    • Distributed Networking

    • Computer Consensus Algorithms

    • Containerisation and Deployment.



    • Full-time role

    • Based in central London

    • Starting immediately

    • Bonuses (based on company performance)

    • Pension scheme

    • Emphasis on personal development within role

    • 25 days holiday (and working from home policy over 2 weeks of late December), plus bank holidays

    • Regular Qadre team events e.g. archery, boxing, dinners, knowledge-sharing;

    • Qadre office prosecco and soft drinks fridge, and fruit in office;

    • WeWork offices (Chancery Lane) - free beer, cider, tea, coffee, biscuits, events, table-tennis, table-football.

    • Open for discussions about health insurance, equity, and international travel or relocation.


    If you, or someone you know, is interested in one of these roles; please get in touch -

      TO APPLY:





      1. Be inquisitive – always look to learn, grow, and challenge - and always ask questions and make suggestions;

      2. No excuses – don’t try to mask your mistakes and failures – embrace them and learn from them;

      3. Treat others with respect – understand that a strong team is a diverse one;

      4. Constantly re-evaluate your role – what is the wider scope you’re working in –what is the wider goal you’re trying to reach, and how do you achieve that;

      5. Seek out smart – try to surround yourself with people who know things you don’t – whether in the existing team, in mentors, or through new hires;

      6. Help out and be nice – whether that’s up-skilling a colleague before their big presentation, or just washing up the glasses after team drinks: always be looking to help out others;

      7. Enjoy your job – you’ll be here a lot, you’ll be the one dictating your commitment – if you’re not having fun, then find the solution: are you no longer happy here (fail fast) or can we pivot internally to fulfill your role.




      Get in touch!

      We’re happy to hear from you. Contact us today to learn more about our business and how you can benefit from working with us.

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