Senior Backend Engineer — Global Payments Platform

Seedscaler; San Francisco (CA); Hybrid; USD 120,000 - 150,000; Full time

Job summary

A well-funded fintech company in California is seeking a Senior Backend Engineer to lead the development of their backend platform for international consumer finance products. The role involves integrating with third-party providers, owning performance and reliability, and establishing backend standards. Ideal candidates have over 5 years of experience in Python, Go, or Rust, and a solid foundation in financial technology. This is a high-ownership role, perfect for those who want to influence architecture and work in a fast-paced environment.

Qualifications

• 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.

Responsibilities

• 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.

Skills

Backend web applications development

API design

Financial technology experience

Full-stack capabilities

Tools

Python

Postgres

Redis

AWS

Rust

Go

Job description

A well-funded fintech company in California is seeking a Senior Backend Engineer to lead the development of their backend platform for international consumer finance products. The role involves integrating with third-party providers, owning performance and reliability, and establishing backend standards. Ideal candidates have over 5 years of experience in Python, Go, or Rust, and a solid foundation in financial technology. This is a high-ownership role, perfect for those who want to influence architecture and work in a fast-paced environment.