Staff Software Engineer, Pro Integrations & AI Patterns

Gusto; United States; On-site; USD 163,000 - 247,000; Full time

Benefits offered by this job

RSUs

Job summary

Gusto in the United States is seeking a Staff Software Engineer for Gusto Pro Integrations to own and build integrations between Gusto and third‑party tools used by accounting firms. The role emphasizes high ownership across a growing portfolio, including Bookkeeping integrations, with focus on reliable backend services and robust data flows.

You'll work hands‑on across the stack (Ruby on Rails, Sidekiq), evaluate AI agent protocols like MCP, and help shape the integration roadmap.

Qualifications

• 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.

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.

Skills

Ruby on Rails

APIs & Integrations

OAuth

AI integrations

Code review

Mentoring

Communication

Observability

Tools

Ruby on Rails

Sidekiq

Job description

Gusto in the United States is seeking a Staff Software Engineer for Gusto Pro Integrations to own and build integrations between Gusto and third‑party tools used by accounting firms. The role emphasizes high ownership across a growing portfolio, including Bookkeeping integrations, with focus on reliable backend services and robust data flows.

You'll work hands‑on across the stack (Ruby on Rails, Sidekiq), evaluate AI agent protocols like MCP, and help shape the integration roadmap.