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Careers at Firefish

Firefish is a fast-growing fintech startup with big ambitions and validated product-market fit, having processed over 100M USD in loans and over 2,900 BTC as collateral. We're building a secure platform for non-custodial, cryptographically-secured Bitcoin-backed loans.

Join us now and experience scaling a startup from the inside – as a core team member, you'll have a front-row seat to our growth journey and directly shape our trajectory.

Own what you care about. You're empowered to work on what interests you, not just what's in your job description. If you see something that needs attention, you are encouraged to tackle it.

No corporate hierarchy or unnecessary meetings here – just a team of experts who know what they're doing, finish what they start, and stand behind their work.

Ready to Build Something Great?

Get in touch: careers@firefish.io

💻 Product & Engineering​

👩‍💻 Full-Stack Developer​

📍 Prague (Hybrid) | ⏰ Full-time

Join our core team building cutting-edge Bitcoin-backed lending infrastructure.

💰 Compensation: 100–180k CZK per month + 📈 equity (flexible split)

Your role will evolve with our growth – shaped by what's needed and what you choose to own. Here are the core responsibilities:

What You'll Do
  • Build features with React, GraphQL, Node.js, and TypeScript
  • Collaborate on AWS infrastructure and Bitcoin node management
  • Tackle security challenges in financial and Bitcoin systems
  • Write secure, maintainable code
  • Drive technical innovation

🎯 We're Looking For:

  • Solid full-stack development experience
  • AWS DevOps knowledge (advantage)
  • Rust experience (bonus)
  • Independent work style with strong ownership
  • Bitcoin passion (big advantage)

✨ Why Join Us:

  • Equity options with real upside potential
  • Direct impact without bureaucracy
  • Flexible hybrid work model
  • Work on meaningful Bitcoin technology
  • Freedom and responsibility

🏢 Other Departments​

📈 Business & Growth: No current openings

⚙️ Operations: No current openings

🤝 Don't See Your Role?​

We're always seeking exceptional talent who are passionate about solving complex problems and building products in fintech and Bitcoin.

Not sure if you're a fit? Let's talk.

🌟 Interested in fintech, Bitcoin, and building products that matter?

Send your CV to careers@firefish.io and tell us what role would be a good fit for you.