> Markdown version of [/jobs/ext/4661105-senior-staff-backend-engineer](https://www.wearedevelopers.com/jobs/ext/4661105-senior-staff-backend-engineer). 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/Staff Backend Engineer - **Company:** Recruiting from Scratch - **Location:** San Francisco, CA, United States - **Experience:** Expert - **Salary:** $200,000 - **Contract:** Permanent contract - **Skills:** Application Programming Interfaces (APIs), Artificial Intelligence, Amazon Web Services, Business Logic, User Authentication, Payment Systems, Python (Programming Language), PostgreSQL, Redis, Web Applications, Backend, Fastapi, Kubernetes, Restful APIs - **Published:** November 10, 2026 - **Apply:** https://www.careerbuilder.com/job-details/senior-staff-backend-engineer-san-francisco-ca--8660956b-3ce6-49e0-a5a3-f2e22cb72a60 ## About the Role Funding, Artificial Intelligence (AI), Credit Cards, Revenue Growth, Product Shipments, Product Development, Communication Skills, Customer Relations, Application Programming Interface (API), Product Engineering, All roles share the same requirements: * 5+ years of experience * Currently authorized to work in the US (we can do H-1B transfers and de novo O-1 sponsorships, but not H-1B de novo) * Strong, fluent communication skills * Proactive, self-motivated attitude, ability to identify most important things to work on and self-manage * Excited to be in-office five days a week, * 5+ years building and shipping web applications in Python, Go, or Rust. * Broad backend experience with at least parts of our stack., * Experience in financial technology. * Experience building AI-native applications. * A full-stack engineering skillset and the ability to flex across other parts of the stack. ## Description This is a general-purpose product backend engineering role spanning customer-facing features, business logic, APIs, and service integrations. You'll mostly be working with our Python (FastAPI) monolith, which runs in Kubernetes pods on AWS, supported by Postgres, Redis, and Kinesis. It serves the REST API behind our iOS, Android, and Web frontends. We are open to Rust and/or Go for services that need to be broken out for performance. What you'll do * Build and ship core product features, business logic, and REST APIs across our backend. * Integrate third-party service providers of all types: authentication, banking, ledgering, payment rails, cryptocurrency, brokerage, etc. * Set engineering standards with the technical founders and build a highly performant, reliable, and secure application from the ground up.