Top Engineering Jobs in San Francisco, CA

Own the technical strategy and outcomes for Gusto’s expansion funnel, including recommendations, nurture journeys, and self-service conversion experiences. Partner with Product, Design, and Data Science to define roadmaps, design experiments, iterate from results, and deliver measurable revenue impact. Lead architecture, technical direction, code quality, mentoring, delegation, refactoring, reliability, and performance initiatives across customer-facing products.

Build and own backend payroll platform services and APIs used by multiple engineering teams. Drive architecture, scalability, reliability, observability, and performance for compliant payroll processing. Partner with product and engineering teams to solve ambiguous technical problems, guide platform adoption, and evolve foundational systems. Use AI-assisted development tools and help promote responsible adoption across the team.

Build and lead customer-facing expansion experiences across recommendations, nurture campaigns, booking flows, and plan upgrades. Design frontend applications, backend APIs, data models, and experimentation programs that improve conversion, adoption, and retention. Own complex multi-quarter initiatives, mentor engineers, address performance and reliability challenges, and collaborate with Product, Design, Data, and Platform teams to deliver measurable customer impact.

Leads organization-wide software initiatives for Gusto’s Agent & Partner Experiences platform. Designs public APIs and agent-facing tools, develops clean and performant Ruby on Rails code, works with developer customers, mentors engineers, improves reliability and observability, and resolves production issues. The role requires technical ownership across complex domains, platform-scale API expertise, and strong communication with engineering and business stakeholders.

Build and own backend services and APIs supporting Gusto Retirement’s financial infrastructure, including payments, settlements, reconciliation, payroll integrations, compliance workflows, loans, billing, and IRAs. Ship reliable production code, debug incidents, improve observability and operational tooling, collaborate with product, compliance, and operations, and mentor engineers. The role requires strong ownership of complex, high-correctness financial systems and end-to-end production support.

Build and operate AWS cloud infrastructure through Terraform/OpenTofu and Spacelift. Lead multi-account AWS migrations, develop reusable infrastructure modules, improve platform reliability, strengthen disaster recovery and compliance, support engineering teams, and participate in incident response and on-call operations. The role also drives multi-quarter infrastructure initiatives and uses AI-assisted tools to improve automation and troubleshooting.

Own the end-to-end PEO onboarding experience, from discovery through setup. Set technical direction, build scalable full-stack product experiences, integrate across teams, and improve onboarding through funnel instrumentation and experimentation. Work in a regulated domain with high quality standards, use AI-assisted engineering tools, and raise the bar for testing, observability, and engineering practices while influencing partner teams and mentoring engineers.

Build and own backend services and APIs for Gusto Retirement’s money movement and financial infrastructure. The role covers payments, settlements, reconciliation, payroll integrations, compliance workflows, billing, and retirement products. Responsibilities include shipping reliable production code, debugging issues, improving observability and operational tooling, partnering cross-functionally, and mentoring engineers. Candidates should have substantial software engineering experience, financial systems exposure, end-to-end ownership, and Ruby on Rails or comparable backend framework experience.

Own end-to-end delivery of greenfield, full-stack product areas for Gusto Solo, from architecture and data modeling through launch. Build scalable backend APIs and frontend experiences, use AI tools and develop AI-native features including MCP tools, and partner with Product, Design, Data Science, and GTM. Help shape product direction, engineering practices, and technical foundations within a small, autonomous team.

Design, build, and scale Gusto’s invoicing and billing platform, including subscriptions, orders, invoice generation, payments, reporting, and accounting integrations. Lead architecture, performance, reliability, and large-scale refactoring for high-throughput distributed systems. Collaborate across engineering, product, data, and design teams; mentor engineers; support new billing models; and leverage AI tools and frameworks to improve development and testing.