213K–236K USD / year
Senior Staff Software Engineer, Gusto Agent & Partner Experiences (API)
BackendHybrid — Denver, CO; New York, NY; San Francisco, CA
Published on 2026-10-15
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About this role
As a Senior Staff Software Engineer at Gusto, you'll lead the development of APIs that enhance payroll experiences for agents and partners. The role encompasses hands-on development in a Ruby on Rails codebase while mentoring other engineers to ensure high-quality outputs.
About the company
Gusto is a digital platform that provides payroll, benefits, and human resource management solutions for small to medium-sized businesses. The company focuses on simplifying HR processes and ensuring compliance, while also offering tools for employee engagement and retirement planning.
The team
Agent & Partner Experiences team
Stack
RubyRuby on RailsAPIAI
What you'll do
- Identify and solve complex technical and organizational problems
- Design API contracts for partners and AI agents
- Engage with developer-customers to enhance product experience
- Write clean, tested, and performant code
- Provide technical guidance and mentoring
- Maintain best practices for reliability and observability
- Troubleshoot and resolve production issues
What we're looking for
- 12+ years of professional software development experience
- Expertise in Ruby and Rails
- Experience designing and building platforms and public-facing APIs
- Ability to mentor and raise the technical bar
- Effective communication with business leaders
Nice to have
- Experience in payroll, tax, or fintech
- Experience with agent-facing tooling
- GraphQL experience at scale