Blockchain Developer


4IRE is a leading Ukrainian-Swedish IT consulting company that focuses on Blockchain, DeFi, and Green Finance empowering businesses to take advantage of the latest technologies. Since 2010, we have become a long-term strategic partner helping with a full range of services required for launching innovative Blockchain and DeFi solutions.


  • Worked in software development for 5+ years (Java or Node.js);
  • Strong Experience with relational DBs;
  • Blockchain experience for 2+ years.

What we expect

  • Lead smart contract and Solidity development;
  • Drive the design, development, and implementation of new features;
  • Work collaboratively across workstreams to rapidly iterate, experiment, and grow the protocol;
  • Design and build systems with an eye for performance, scalability, and resilience;
  • Deploy, operate, and maintain services in production;
  • Ensure best practices across development, testing, and security.

We offer

  • Competitive salary depending on the background;
  • The ability to grow professionally and develop your career;
  • Great atmosphere, with the vibe and energy of a high-growth tech company;
  • Smooth adaptation period: 3 months;
  • Experienced colleagues who are ready to share knowledge;
  • Long-term employment.