
Blockchain Systems Developer
3 days ago
Job Title: Blockchain Systems Developer
We're looking for a skilled Backend Engineer to build the backend infrastructure of our Bitcoin wallet, focusing on delivering high-performance, scalable, and secure systems.
- Key Responsibilities:
- Design and develop low-latency APIs and real-time services for instant sends, swaps, and approvals
- Own backend integrations with partner platforms (e.g., Turnkey, OneBalance)
- Implement a resilient ledger and state machine for money movement
- Develop a policy engine for approvals, caps, timelocks, and joint accounts
- Ensure performance, reliability, and observability across production systems
- Develop a policy engine for approvals, caps, timelocks, and joint accounts
- Implement a resilient ledger and state machine for money movement
- Own backend integrations with partner platforms (e.g., Turnkey, OneBalance)
- Design and develop low-latency APIs and real-time services for instant sends, swaps, and approvals
Requirements:
- 5+ years of experience in building backend systems at scale
- Strong proficiency in TypeScript/Node, Go, Rust, or Kotlin programming languages
- Experience with async I/O, queues, retries, and state machines
- Database expertise, including Postgres and Redis
- Track record of owning systems end-to-end from design to production
- Database expertise, including Postgres and Redis
- Experience with async I/O, queues, retries, and state machines
- Strong proficiency in TypeScript/Node, Go, Rust, or Kotlin programming languages
Desirable Skills:
- Knowledge of crypto custody/MPC, Bitcoin UTXOs, and fintech/payment systems
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