Staff Software Engineer, Core Platforms

About Gusto At Gusto, we're on a mission to grow the small business economy. We handle the hard stuff—like payroll, health insurance, 401(k)s, and HR—so owners can focus on their craft and customers. With teams in Denver, San Francisco, and New York, we’re proud to support more than 400,000 small businesses across the country, and we’re building a workplace that represents and celebrates the customers we serve. Learn more about our Total Rewards philosophy . About the Role: We're looking for seasoned full-stack software engineers to join the teams behind Gusto's product platforms — the shared systems that our product teams build upon — to serve small business owners every day. As a Staff Software Engineer, you'll operate across the full lifecycle of foundational systems: shaping architecture early in the design process, building self-service internal features and APIs, and owning their performance long after launch. That means engineering the core business engine, enabling product teams with reliable backend services, and setting the engineering standard for those around you. If you're drawn to work that combines technical craft with real-world impact — helping power the livelihoods of millions using Gusto products — join us! Here’s what you’ll do day-to-day: Design, build, and test Gusto core platform services – communications, reporting, dashboards, access, workflows, risk, payments, and compliance capabilities, among others Mentor other engineers to help solve some of the hardest technical problems out there in very complex domains and at a large scale Help sc