Staff Software Engineer (HR Experiences)

About this role

• We’re looking for seasoned full-stack software engineers to join Gusto’s HR Experience team
• Half the American workforce works at a small business, and most of those businesses can’t afford a real HR team
• When they hit an HR decision they don’t have the expertise for — a termination, a comp change, setting a time-off policy for the first time — they either pay for expensive outside help or guess, even though the right answer depends on rules that vary across 50 states and hundreds of localities
• HR Experience is building that expertise directly into Gusto: compliant HR guidance and documentation, built natively for both the employer creating it and the employee receiving it, in a domain where the compliance bar is real — “mostly right” isn’t good enough
• You’ll also help drive the other half of HR Experience’s mission: using AI to make Gusto’s human HR Partners faster and more effective, so more small businesses can get real HR support without needing to hire their own HR team
• As a Staff Software Engineer, you’ll operate across the full product lifecycle: shaping features from early spec and design through to launch and long-term iteration
• That means writing clean frontend code, designing and building reliable backend APIs, influencing product direction, and taking ownership of what happens after a feature ships
• If you’re drawn to work that combines technical craft with real-world impact — helping small businesses get HR infrastructure they can actually rely on — join us!
• Design, build, and test across Gusto’s HR experience — the employer-facing document and guidance tools, and the employee-facing side of that same experience
• Build AI tools and agents that help scale Gusto’s HR Partners team, automating the compliance and document workflows human HR partners handle today
• Mentor other engineers to help solve some of the hardest technical problems out there in very complex domains and at a large scale
• Help scale one of the largest Ruby/Rails and J...