Top Senior Software Engineer Jobs in San Francisco Bay Area, CA

Design and build APIs and microservices, architect and scale distributed systems, and own projects from technical design through launch and maintenance. Implement monitoring, telemetry, and CI/CD pipelines, lead code quality and reviews, collaborate across teams, and mentor junior engineers.

Design and implement logistics optimization algorithms, develop predictive models, and build simulations for patient scheduling and routing in healthcare.

The Senior Software Engineer will explore AI solutions in healthcare, having experience in full-stack/backend development and startup culture.

As a Senior Software Engineer, you will design and build backend services and APIs for healthcare delivery, ensuring system reliability and integrating medical devices while leading projects and mentoring engineers.

As a Senior Software Engineer at Whatnot, you'll build AI tooling for internal use, developing workflows and infrastructure to enhance software delivery. You'll collaborate across teams to gather feedback and prioritize features in a rapidly evolving landscape.

Senior software engineer responsible for architecting and delivering full-stack solutions for scientific workflows (studies, workflows, procedures) used in regulated GLP/GMP environments. Lead multi-quarter initiatives, influence engineering direction, mentor engineers, partner with product and design, and explore AI/LLM opportunities to accelerate lab operations. Own end-to-end delivery and help scale hiring, tooling, and processes.

Build and scale backend and full-stack systems powering patient booking, clinician routing, logistics, and device integrations. Own 0->1 projects, design APIs and data models, solve scheduling and dispatch challenges, integrate external health systems, and collaborate with product, data, ops, and clinical teams.

Build and scale backend and full‑stack systems powering patient booking, clinician routing, logistics, and device integrations. Ship end-to-end features, design APIs and data models, solve scheduling/dispatch challenges, integrate with external health systems and medical devices, and own projects from 0→1 while collaborating with product, data, ops, and clinical teams.

The Software Engineer will enhance trust and security in Notion's features, build AI-powered systems for risk detection, and collaborate across departments to ensure data privacy.

Design, build, and scale backend services, APIs, and full-stack features powering patient booking, clinician routing, logistics, and device integrations. Solve scheduling, dispatch, safety, and clinical-error prevention challenges, integrate external health systems and medical devices, and own projects 0→1 while collaborating with product, data, ops, and clinical teams.

Design and implement large-scale routing, scheduling, forecasting, and simulation systems to optimize clinician dispatch and capacity. Prototype and productionize optimization and predictive models, collaborate with product and ops, and own end-to-end projects in a distributed environment.

Build and scale backend and full-stack systems powering patient booking, clinician routing, logistics, and device integrations. Own 0->1 projects, design APIs and data models, integrate external health systems and medical devices, solve operational challenges at scale, and collaborate with product, data, ops, and clinical teams to deliver secure, reliable production software.

Design, maintain, and evolve core backend systems and APIs. Collaborate with product teams to create durable and reusable systems while enhancing performance and security.

Lead technical vision and reusable solutions across cloud-native banking systems. Drive architecture, performance, scalability, mentoring, cross-team influence, and deliver high-quality implementations and thought leadership.

Build end-to-end fullstack features for a mental healthcare platform: design APIs and UIs, manage clinical and practice-management systems, integrate AI capabilities, and own product outcomes from schema to frontend.

Lead design and implementation of the payment and clearinghouse platforms powering Headway's revenue flows. Build fault-tolerant, observable integrations (Stripe, Plaid, payers), create abstractions for adjacent teams, mentor engineers, and write high-impact code to ensure reliability, throughput, and correct reconciliation of transactions at scale.

Headway seeks a Staff Fullstack Engineer to own end-to-end product work across frontend and backend. You’ll build practice management, patient/provider engagement, AI-enabled clinical systems, onboarding, growth tools, and platform foundations. The role requires technical leadership, cross-functional strategy, mentoring, and shipping scalable, reliable systems in a complex healthcare domain.

Design and build reliable backend services powering clinical data, insurance billing, patient-facing infrastructure, and financial ledger systems. Scale high-integrity systems requiring idempotency, strong consistency, and pragmatic AI integration to automate provider workflows and enable personalized patient experiences.

Design, implement, and operate large-scale backend services (identity, friend graph, persistence). Collaborate across teams to evaluate trade-offs, ensure availability, scalability, and security, participate in incidents, and use AI tools to accelerate development while maintaining code quality and operational excellence.

Design and implement complex Android platform projects, drive long-term Android strategy, build core frameworks and tooling, collaborate with product/design and teammates, review code and document best practices, evangelize Android best practices and AI code-generation tools, and participate in on-call rotation to support production systems.

The Software Engineer II will design, implement, and maintain web applications for marketplace middleware, ensuring high code quality and collaborating with stakeholders.

Design, build, and maintain scalable, reliable full‑stack systems. Contribute to API and architecture design, write testable code, debug complex issues, improve performance, automate deployments, and mentor junior engineers while collaborating with cross‑functional teams.

Senior technical leader for fraud platforms responsible for architecture, resiliency, and scalable designs. Hands-on coding, solution decomposition, CI/CD, observability, test automation, incident RCA, and guiding multiple Agile teams for platform modernization and operational excellence.

The Software Engineer will enhance Lending products for Cash App, focusing on building complex systems, APIs, and collaborating with multiple teams to support economic empowerment through accessible credit.

As a core engineer on the Web Infrastructure team, you will enhance Notion's web client performance and development speed by improving load times, interaction latency, and providing tooling for product engineers.