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SeniorFull-timeTypeScriptRustCI/CDAPI
Salary Range
$132,600 - $179,400 /year
This salary is estimated based on similar roles. The actual salary may vary.
About the Role
We are seeking a Senior Software Engineer to join an APAC-focused technology company building a non-custodial, protocol-level payment infrastructure. This greenfield project sits at the intersection of Web3 payments, cryptographic verification, and high-reliability backend systems.
Key Responsibilities
- →Design and implement high-performance backend APIs for payment verification and settlement
- →Build cryptographic verification logic including signature validation, replay protection, and idempotency
- →Integrate with blockchain RPC providers and design confirmation, retry, and failover strategies
- →Architect secure key-management solutions, audit logging, and least-privilege access
- →Develop chain adapters for EVM and non-EVM networks, starting with stablecoin transfers
- →Own production readiness including SLOs, monitoring, alerting, and incident response workflows
- →Write technical documentation, threat models, and operational runbooks
- →Mentor junior engineers and contribute to engineering standards and best practices
Requirements
- ✓5–8+ years of backend engineering experience, ideally in TypeScript/Node and/or Rust
- ✓Strong understanding of cryptographic signatures, structured payloads, and API security
- ✓Hands-on experience with EVM transaction lifecycle (nonce, gas, finality) and/or Solana
- ✓Proven track record building production-grade distributed systems
- ✓Experience with CI/CD, containerised deployments, and observability tooling
- ✓Excellent written communication skills for design docs, threat models, and runbooks
