Top Tech Jobs & Startup Jobs in San Francisco, CA

Build and own Gusto’s AI agent platform for support advocates, including the LLM agent runtime, tool/action layer, Rails/GraphQL backend, frontend experience, and evaluation/monitoring systems. Work with LLMs, retrieval, prompting, and feedback loops to improve reliability and safety, ship autonomous actions with human approval, and partner with Product, Data, Design, and CX. Mentor engineers and help set engineering standards for trustworthy agentic systems.

Lead paid social and emerging channel experimentation across Meta, LinkedIn, Reddit, Quora, and TikTok. Manage multi-million dollar budgets, design and analyze creative tests, apply AI-powered workflows, run pilots for new channels, partner with integrated teams on launches, and drive pipeline and revenue using Gusto's measurement framework.

Lead design and delivery of Gusto's Commerce Platform components (catalog, promotions, subscriptions, entitlements). Own architecture, reliability, and performance; drive multi-quarter projects; partner with product, data science, and cross-functional teams; mentor engineers; and promote AI-augmented development and platform adoption to accelerate business impact.

Lead definition and delivery of vulnerability management and security operations programs across Security, AIT, R&D, Infrastructure, GRC, and Risk. Set strategy and roadmap, run programs, expand detection and remediation coverage, build AI-driven security workflows and metrics, manage stakeholders and vendors, and ensure audit and regulatory commitments are met.

The Principal Software Engineer will lead technical direction for Gusto's Money Group, focusing on systems architecture, service migration, mentoring engineers, and driving complex projects in fintech. Responsibilities include defining long-term vision and ensuring quality delivery across multiple teams.

Design, build, and maintain Gusto core products (Payroll, Benefits, HR, Retirement, Gusto Money, etc.). Work across frontend and backend, scale Ruby on Rails and JavaScript/React systems, prototype and launch features, own multi-quarter projects, mentor engineers, resolve large-scale refactors, performance and reliability issues, and apply AI tools to improve development and product capabilities.

As a Staff Product Designer, you'll lead the design strategy for contractor products, collaborating with cross-functional teams to improve user experiences and mentor fellow designers.

Lead integration of AI and automation across enterprise systems, designing Model Context Protocols and intelligent agents to automate workflows, ensure security and SOX compliance, measure KPIs, and enable business stakeholders to adopt AI-driven processes.

The Senior Staff Software Engineer will lead the technical direction of Gusto's Commerce Platform, focusing on system architecture, project delivery, mentoring, and collaborating with product teams to enhance the platform's reliability and performance.

Design, build, and test the Gusto PEO Benefits experience across frontend and backend systems. Lead architecture for greenfield PEO benefits work, integrate carriers, automate operational processes, mentor engineers, collaborate cross-functionally, and iterate features from spec to launch at scale.