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Tezos is the product of many organizations and individuals across the globe working together on an open-source project.

Senior Full-Stack Engineer (Growing AI Startup)

Madfish

Madfish

Software Engineering, Data Science
Ukraine · Europe
Posted on Nov 21, 2025

Hey there! 👋

We're looking for an expert full-stack React/Node.js engineer with experience in building AI tools to join our growing team! We're working on a product that has already made an impact in a major U.S. industry and has gained traction with several Fortune 500 companies. We're a small yet powerful team, but considering recent growth - expect plenty of opportunities of growth and a chance to tackle interesting engineering challenges!

What skills we expect you to have: 🎯

  • English: Advanced (B2+)
  • B.Sc. in Computer Science or similar;
  • Excellent communication, collaboration, problem-solving, and analytical skills;
  • 5+ years of writing commercial React.js and Node.js apps;
  • Extensive experience with SQL-based databases;
  • Extensive experience with Amazon Web Services;
  • Understanding of LLMs and their application to building web applications;

What would be a huge plus: ✨

  • English: C1
  • Background in building your own side projects (please share links);
  • Experience of leading engineering teams or initiatives at your previous company;
  • Experience in building CI/CD pipelines;
  • You have experience building AI apps (LangChain / LlamaIndex) and with MLOps;

What’s in it for you: 🌴

Professional Growth & Lifestyle:

- Remote work and flexible working hours (our team is 100% remote);

- Opportunity to join an international team of a fast-scaling startup;

- Leadership initiatives;

Benefits:

- Annual vacation: 20 business days (100% compensation)

- Annual sick leave: 10 business days (100% compensation)

- Competitive compensation.

Please, feel free to reach out should you have any questions!

Best regards,

Universium Team ❤️