Senior Back-end Engineer (Node.js)

Engeneering remote/office

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.


  • Collaborate with Project Manager, Business Analysts, Dev team, and QA Engineers;
  • Contribute to all phases of the development lifecycle;
  • Write well-designed, testable, efficient code;
  • Help with bringing to life architectural redesign of the system;
  • Ensure designs are following specifications;
  • Investigate performance and technical issues from production.

What we expect

  • 3-4+ years of experience in Node.js;
  • Experience with Nest.js;
  • Experience with AWS + Kubernetes;
  • Experience with PostgreSQL;
  • Experience with architecting and managing both relational and NoSQL databases;
  • Experience with writing, deploying, and maintaining highly efficient and scalable APIs;
  • Demonstrate experience with architecting design patterns;
  • Experience with horizontal scaling, and load balancing;
  • Commitment to a software development workflow that includes robust testing through the use of Jest, Mocha, or other similar tools;
  • English: Upper-Intermediate — International Team.

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;
  • Experienced colleagues who are ready to share knowledge;
  • Smooth adaptation period: 2 months;
  • Long-term employment;
  • Friendly team (we are a company with a family atmosphere).