About the company
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.
Responsibilities
- Own and extend Gusto's existing third-party integrations and help build out new ones as the portfolio grows
- Design and build reliable backend services (Ruby on Rails, Sidekiq) that sync data between Gusto and partner platforms
- Evaluate and help build new integration patterns — including AI agent protocols like MCP — as we expand beyond traditional API integrations
- Help define the technical approach and roadmap as the Integrations domain grows
- Partner with Product, Design, and Data Science to validate accountant workflows and iterate based on feedback
- Participate in code review and help set the technical bar for a team that's still establishing its engineering practices
- Mentor other engineers as the team scales
Requirements
- 8+ years of professional software development experience
- Experience owning multi-quarter projects end-to-end — scoping, planning, execution, stakeholder management, and launch
- Strong platform/application engineering background: services, APIs, third-party integrations, data flows, observability
- Comfortable operating in an ambiguous, early-stage domain where the roadmap isn't fully written yet
- Ruby on Rails experience strongly preferred; experience with OAuth and third-party API integrations a plus
- Familiarity with AI agent protocols (e.g., MCP) or agentic integration patterns is a plus
- Excellent communication skills — able to explain technical tradeoffs to both engineers and cross-functional partners
- AI-native mindset, with AI tools naturally embedded in your daily engineering workflow
Conditions
- Cash compensation targeted at $163,000–$204,000 in Denver, and $197,000–$247,000 for San Francisco, Seattle & New York
- Stock equity is additional
- Hybrid: employees based in Denver, San Francisco, and New York City will be expected to work from the office on designated days approximately 2-3 days per week