Senior Software Engineer – Backend
Summary
Senior backend engineer at a venture-backed fintech company rebuilding core money-movement infrastructure for embedded payments, ACH, and ledger services using Go, Postgres, and Temporal.
Our client is a venture-backed financial infrastructure company that recently closed a $90M Series C from a top-tier growth fund. Their platform powers embedded payments, ACH, and ledger services for mid-market software companies, and the engineering team is rebuilding its core money-movement infrastructure to support 10x volume growth over the next 24 months.
As Senior Software Engineer on the Payments Platform team you will own end-to-end design and delivery of new ledger primitives, idempotency and reconciliation systems, and bank integration adapters. You will work in Go, Postgres, and Temporal, and partner closely with Product, Risk, and Compliance to ship financially correct, audit-grade software.
The team operates with strong engineering rigor — design docs, code review, on-call rotation, and incident retrospectives are part of the culture. Senior engineers are given meaningful technical scope and have a clear path to Staff within 18–24 months.
Requirements
- 6+ years of backend engineering experience shipping production systems at scale
- Strong proficiency in Go, Java, or another statically typed backend language
- Deep experience with Postgres or another relational database — schema design, query optimization, transaction semantics
- Comfort with distributed systems concerns: idempotency, exactly-once processing, eventual consistency
- Prior fintech, payments, or financial infrastructure experience strongly preferred
