CareerPlan

Staff Software Engineer, Financial Platform

San Francisco, CA - HybridFull-time$163k2026-10-05 → 2026-11-10
Hybrid

Core

Design, build, and own backend services and APIs for money movement, payments, settlements, and financial integrations within Gusto Retirement.

Role type

Staff Software Engineer (Financial Platform)

Builds

Production-ready financial systems, payment flows, and compliance integrations for small business retirement accounts.

Domain

Fintech / Financial Services / Retirement Platforms

Required skills

Backend services design, API development, Financial systems knowledge, Payments processing, Reconciliation logic, Production support, System ownership, Cross-functional collaboration, Engineering mentorship, Ruby on Rails

Preferred skills

AI tools integration, Emerging AI frameworks, Experimentation with new technologies

Technologies

Ruby on Rails, Backend frameworks, Financial APIs

Responsibilities

Design and ship services and APIs for money movement and financial integrations, Work on payments, settlements, reconciliation, and corrections involving real customer funds, Build and support critical workflows like payroll integration, KYB/KYC, 401k loans, billing and invoicing, and IRA, Debug production issues and improve reliability, observability, and operational tooling, Collaborate with other engineering teams to integrate with shared systems and platforms, Mentor other engineers to help solve some of the hardest technical problems out there in very complex domains and at a large scale, Write clear, reliable, well-tested code that ships quickly and scales well