Top Tech Jobs & Startup Jobs in San Francisco Bay Area, CA

The Principal Engineer will lead technical direction across multiple teams, design architecture for financial systems, mentor engineers, and drive multi-year transformations in the Money Group.

Own and improve Gusto's AI-first service intelligence layer across voice, chat, and email. Define intent understanding, escalation/handoff, context ingestion, and knowledge retrieval. Build models, evals, and monitoring; iterate rapidly; dismantle legacy workflows; collaborate with GTM, Sales, and Service; and track metrics (solve rate, satisfaction, escalation accuracy, handle time, customer effort) to drive seamless customer resolutions and operational efficiency.

Lead the technical design and architecture of Gusto's Commerce Platform, mentoring engineers and ensuring service reliability while collaborating across teams.

As a Staff Software Engineer, you'll design, build, and test Gusto's core platform services, mentor engineers, and collaborate with various teams to solve complex engineering problems.

Own and scale IT General Controls across NetSuite, Workday, Salesforce, and related enterprise applications. Lead access governance, segregation-of-duties processes, change management, audit readiness, evidence collection, and remediation. Partner with Internal Audit, External Audit, Security, Finance, and application owners on SOX compliance. Develop AI-native continuous controls monitoring, automated testing, anomaly detection, and governance for internal AI systems while modernizing the broader controls environment.

Design and implement AI agents and Model Context Protocols to integrate enterprise systems (NetSuite, Zuora, Jira) with LLMs. Build secure, SOX-compliant automation and orchestration workflows, measure KPIs, and partner with Finance, IT, and Security to operationalize AI across enterprise applications.

Lead full‑stack engineering work on tax experiences: design, build, test, and operate scalable systems for tax collection, payment, and filing. Drive technical strategy, mentor engineers, collaborate cross-functionally, prioritize long-term architecture, and apply AI tools to improve developer productivity and customer workflows.

Lead and grow a data science and analytics team supporting Growth product initiatives. Partner cross-functionally to shape strategy, design measurement frameworks, run experiments (A/B tests), and build AI/ML-powered product features. Balance hands-on analysis, rigorous evaluation, and executive-facing communication to drive product impact and scale.

Build and own Otto, Gusto's LLM agent platform end-to-end: runtime, tool/action layer, Rails/GraphQL backend, advocate-facing frontend, and eval/observability systems. Expand safe autonomous actions, work with LLMs and retrieval, partner with Product/Data/Design/CX, and mentor engineers to ship reliable agentic features.

Lead full-stack development for employer and employee tax account systems: design reliable backend APIs and data models, build automation and agency-integration pipelines, model jurisdiction-specific compliance rules, mentor engineers, partner with product and operations, and deliver scalable, test-driven solutions that ensure tax accuracy and reliability at scale.