Founding backend engineer

Founding Backend Engineer – Yoshi

About Yoshi

Yoshi is the first seedless Bitcoin wallet: no seed phrases, no hardware hassle, no custodial risk. We utilize Bitcoin-native MPC to deliver sovereign-grade security with everyday usability, allowing users to set up in seconds and trust their Bitcoin for life.

We’re hiring a Founding Backend Engineer to build the backend foundations of Yoshi—think Robinhood-like speed and polish, applied to Bitcoin.

What You’ll Do

• Build low-latency APIs and real-time services for instant sends, swaps, and approvals

• Own backend partner integrations (Turnkey, OneBalance, etc.)

• Design and maintain a resilient ledger and state machine for money movement

• Implement a policy engine for approvals, caps, timelocks, and joint accounts

• Ensure performance, reliability, and observability across production systems

---

What We’re Looking For

• 5+ years building backend systems at scale

• Strong skills in TypeScript/Node, Go, Rust, or Kotlin

• Experience with async I/O, queues, retries, state machines

• Database expertise (Postgres, Redis) and modeling for consistency

• Track record of owning systems end-to-end (from design to production)

• work from Hyderabad

• Bonus: experience with crypto custody/MPC, Bitcoin UTXOs, or fintech/payment systems.