> Markdown version of [/jobs/ext/4625607-senior-software-engineer-backend](https://www.wearedevelopers.com/jobs/ext/4625607-senior-software-engineer-backend). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Software Engineer - Backend - **Company:** KOVARS, INC. - **Location:** San Francisco, CA, United States - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Java (Programming Language), Relational Databases, Distributed Systems, PostgreSQL, Query Optimization, User-Centered Design, Backend - **Published:** November 7, 2026 - **Apply:** https://www.juju.com/job/28_25197_3ca33bccf787ef4e8db44275c018d752 ## About the Role * 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 ## Description 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.