Blockchain Payments Integration - Backend Engineer (TypeScript)

Backend Engineer (TypeScript)

We're building a high-performance financial ledger connecting fiat payment rails and blockchains through service providers. We're looking for a backend engineer to work on integrations that bridge traditional banking (ACH, WIRE, SEPA) with on-chain stablecoins.

What You'll Work On

• Building and maintaining services that connect Banking-as-a-Service providers to our network

• Implementing on-ramp (fiat to tokens) and off-ramp (tokens to fiat) pipelines with strong idempotency guarantees

• Designing queue-based processing pipelines for multi-step financial transactions

• Working with identity/compliance infrastructure: KYC certificates, selective disclosure, encrypted attribute sharing

• Publishing service metadata for decentralized discovery by wallets and other services

• Writing integration tests against real APIs and a local blockchain node

Tech Stack

• TypeScript / Node.js (ESM)

• PostgreSQL

• Vitest

• Custom SDK ecosystem

What We're Looking For

• Strong TypeScript skills with emphasis on type safety

• Experience integrating with banking/payment APIs (ACH, wire transfers, BaaS platforms)

• Comfort with asynchronous pipeline architectures (queues, retries, idempotency)

• Understanding of blockchain concepts (token minting/burning, on-chain permissions, transaction signing)

• Preference for integration tests over unit tests; ability to write tests that exercise real system behavior end-to-end

• Familiarity with explicit resource management patterns (AsyncDisposable, structured cleanup)

• Experience working with different third-party integrations

Nice to Have

• Experience with KYC/KYB compliance flows and certificate-based identity

• Multi-currency system design (FX, per-currency fee structures, decimal handling)

How We Work

• Strong code ownership

• Small team, high autonomy, direct impact on financial infrastructure

  Straightforward Recruitment:

  • We respect your time. Our 2-step recruitment process is designed to be efficient and meaningful.

  • Flexible Work Environment: Work from anywhere. Align with sprint goals and deliverables - we trust you to manage your productivity.