Staff Software Engineer, Gusto Pro Integrations
About the Role:
As a Staff Software Engineer on Gusto Pro Integrations, you'll build and own integrations between Gusto and the third-party tools accounting firms already use to run their practice. The team maintains a growing portfolio of integrations today (including our Bookkeeping integrations), and we expect that portfolio to keep expanding as the team grows what "integrations" means for Gusto Pro. You'll work hands-on across the stack (Ruby on Rails, Sidekiq), including evaluating both traditional API integrations and emerging AI agent protocols like MCP (Model Context Protocol), while partnering closely with Product, Design, and Data Science to make sure every integration fits naturally into how accountants actually work. This is a high-ownership role on a small, growing team: the Integrations roadmap ahead isn't fully defined yet, and you'll have real input into what gets built next.
About the Team:
The Gusto Pro Integrations team builds and maintains integrations between Gusto and the third-party software used by accounting firms — including our existing Bookkeeping integrations, with more added over time. We expect the set of integrations we own to keep growing, across the various tools and platforms accountants already rely on. We work closely with Gusto Pro's other teams to deliver a seamless experience for accounting professionals.
Here’s what you’ll do day-to-day:
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
Here’s what we're looking for:
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 (code generation, review, debugging, documentation)
Our cash compensation amount for this role is targeted at $163,000–$204,000 in Denver, and $197,000–$247,000 for San Francisco, Seattle & New York. Stock equity is additional. Final offer amounts are determined by multiple factors including candidate experience and expertise and may vary from the amounts listed above.