Tech Lead
Job Description
About Firefish
Firefish is a bitcoin startup based in Prague. We’re building a secure platform for Bitcoin‑backed lending. No corporate hierarchy, no endless meetings – just a small team of people who know what they’re doing, ship fast, and stand behind what they build.
We’re looking for a Tech Lead who will take charge, mentor the team, and help push both our product and technology forward. Want to build instead of just talking about building? Join us.
What you’ll do
Build in a modern stack: React, GraphQL, Node.js, and TypeScript
Manage our AWS infrastructure – Lambda, RDS, S3, EC2, and Bitcoin nodes
Tackle security challenges around Bitcoin and sensitive financial data
Maintain our Bitcoin node and Rust‑based tools
Mentor your teammates and uphold high code quality
Actively shape the direction of the product, not just its implementation
What we’re looking for
Senior full‑stack developer (TypeScript, Node.js, React) with experience leading projects or teams
AWS DevOps skills (infrastructure as code, scaling, security)
Bonus: Rust
Ownership mindset and the ability to deliver
Passion for Bitcoin is a big plus
Why Firefish
Equity options
Small team, big impact – no hiding behind processes
Hybrid setup (Prague, Dejvice + flexible remote)
Work on real Bitcoin products
Freedom, responsibility, and an engineering‑driven culture
📩 Sounds like the right challenge for you? Let’s talk.
