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Backend Engineer​/International

Job in San Francisco, San Francisco County, California, 94199, USA
Listing for: Seedscaler
Full Time position
Listed on 2026-06-05
Job specializations:
  • Software Development
    Backend Developer, Cloud Engineer - Software
Salary/Wage Range or Industry Benchmark: 80000 - 100000 USD Yearly USD 80000.00 100000.00 YEAR
Job Description & How to Apply Below
Position: Staff Backend Engineer / International Payments

We’re looking for a Staff Backend Engineer to join a well‑funded, early‑stage fintech company building a consumer finance product for international users. You’ll own core backend systems powering iOS, Android, and web clients, and help set engineering standards as the team scales.

This is a senior, high‑ownership role. You will work closely with technical leadership to build secure, reliable systems that handle real money at scale.

Why consider this role

You want to work on modern financial infrastructure, including cross‑border payments.

You prefer senior, high‑agency teams that ship quickly and iterate in production.

You care about building robust systems with strong security and correctness.

You want meaningful influence on architecture and technical direction.

What you will do
  • Lead development of a backend platform that serves a REST API for mobile and web clients.
  • Integrate with third‑party providers across wallets, banking, authentication, ledgers, and payment rails.
  • Own reliability and performance work, including scaling bottlenecks and improving system correctness.
  • Establish backend standards (testing, observability, security practices, deployment patterns).
  • Identify services worth splitting from the monolith for performance or isolation, and implement them.
Technologies
  • Python (FastAPI) monolith
  • Postgres and Redis
  • AWS
  • Openness to Rust and or Go for performance‑sensitive services
What we are looking for
  • 5+ years building and shipping backend web applications in Python, Go, or Rust.
  • Strong fundamentals across backend systems, including Postgres, Redis, and AWS.
  • Experience designing APIs and shipping production‑grade systems that are reliable and secure.
  • Experience in financial technology, payments, or regulated environments.
  • Full‑stack capability, and a willingness to flex across the stack when needed.

If you are interested in learning more about this role, please reach out to us on Linked In!

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