Software Engineer, Payments

San Francisco, CA - Hybrid💼 Full-time💰 $183,000–$183,000🗓 2026-08-31 → 2026-09-26

Core

Design, build, and test infrastructure for a re-architecting payments platform to move money fast and at scale for small businesses.

Role type

Senior Software Engineer (Payments Infrastructure)

Builds

Core payments platform, distributed systems, and custom tailored experiences for partners, employers, and employees.

Domain

Fintech / Payments / Distributed Systems

Deliverable

production ML models | product features | infrastructure

Required skills

Distributed systems design, fault-tolerant software architecture, large-scale code maintenance, technical leadership, cross-functional collaboration, test-driven development

Preferred skills

Payments and/or Accounting systems domain knowledge, Ruby on Rails, TypeScript, React

Technologies

Ruby, Rails, TypeScript, React

Responsibilities

Design and build infrastructure enabling unique customer experiences, scale large Ruby/Rails and TypeScript/React applications, mentor fellow engineers, collaborate on complex ambiguous problems across cross-functional teams

Seniority

Senior, hands-on IC with architectural guidance

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About gusto

At Gusto, we're on a mission to grow the small business economy. We handle the hard stuff — payroll, health insurance, 401(k)s, and HR — so owners can focus on their craft and their customers. With teams in Denver, San Francisco, and New York, we support more than 500,000 small businesses nationwide and are building a workplace that reflects the people we serve.