Staff Software Engineer, Gusto Pro

📋 Description Own and extend Gusto's existing third-party integrations and help build out new ones as the Design and build reliable backend services (Ruby on Rails, Sidekiq) that sync data between Gusto Evaluate and help build new integration patterns — including AI agent protocols like MCP — as we 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 Participate in code review and help set the technical bar for a team that's still establishing its 🎯 Requirements 8+ years of professional software development experience Experience owning multi-quarter projects end-to-end — scoping, planning, execution, stakeholder Strong platform/application engineering background: services, APIs, third-party integrations, data 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 Familiarity with AI agent protocols (e.g., MCP) or agentic integration patterns is a plus 🎁 Benefits Competitive base pay, benefits, and equity (RSUs) Stock equity is additional to cash compensation