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

As a Software Engineer III, you'll implement new features for Crunchyroll's iOS and Apple TV app, ensuring code quality and collaborating with teams on technical design and dependency management.

The Back-End Engineer will design and build core platform services, operate production services, and work on AI-powered features while collaborating with cross-functional teams and mentoring junior engineers.

As a Software Engineer, you'll build AI-driven product experiences for scientists, optimize user onboarding, and analyze data to drive growth and retention.

As a Software Engineer, you will design and build critical systems for enterprise customers, ensuring regulatory compliance and enhancing product capabilities. Your role involves technical leadership, architectural work, and mentoring team members, with a focus on scalable and reliable software solutions.

As a Front-End Software Engineer, you will build AI-powered interfaces, tackle complex design problems, and collaborate across teams to enhance user experiences. Responsibilities include mentoring, implementing responsive UI, and engaging with AI technologies.

Lead design and development of Java/Spring and React applications for genomic variant identification and clinical reporting. Architect data models, APIs, and search strategies for large-scale variant data. Partner with scientific and clinical experts, drive technical direction, mentor engineers, troubleshoot production issues, and improve reliability, observability, and performance.

As a Billing & Analytics Software Engineer, you'll design and maintain the billing pipeline, integrate billing systems, and develop customer-facing analytics dashboards to support revenue recognition and operational observability.

Lead full‑stack design and delivery of customer-facing web experiences (Browse, Navigate, Preview). Own architecture, APIs, data models, rollouts, observability, on‑call readiness, and cross-team alignment, using approved AI-assisted workflows while ensuring technical quality and reliability.

Lead design and delivery of scalable customer-facing features, services, and APIs that process real-time data and AI-powered insights. Build web experiences, contribute to LLM/AI workflows, ensure reliability through observability and rollout practices, and collaborate cross-functionally with Product, Design, ML, and platform teams.

Lead development and maintenance of high-performance React Native apps across iOS and Android. Improve architecture, manage RN upgrades, debug native modules, own automated testing and CI/CD, optimize performance and stability, and mentor engineers within cross-functional product pods.

The Software Engineer, Backend will develop scalable distributed systems, build REST APIs, and ensure high-quality software delivery while collaborating with teammates and stakeholders.

Responsible for developing and enhancing an AI SDK, ensuring high performance and integration with deployment platforms, while collaborating with cross-functional teams and engaging with the open-source community.

As a Full Stack Engineer, you will build and manage the Vercel Dashboard, creating a personalized interface while optimizing backend services, APIs, and user interactions.

The Staff Software Engineer will design and build agentic systems, architect workflows, develop skill injectors, and collaborate on AI tooling within the Vercel Agent team.

Design and build scalable backend services and APIs, own infrastructure and observability, make architectural decisions, collaborate with product/design/data, and shape engineering practices and culture.

The role involves leading application performance improvements across multiple platforms, focusing on measurable metrics and driving engineering standards and workflow optimization, using both hands-on coding and strategic influence.

As a Distinguished Software Engineer, you will design and build large-scale distributed systems, optimize machine learning platforms, and lead technical initiatives while mentoring talent.

Lead UI architecture and design for responsive web applications; build reusable components with Angular/React/Vue and TypeScript/JavaScript; integrate UIs with RESTful microservices; enforce accessibility, security, testing, and CI/CD standards; mentor developers and collaborate with UX, backend, and DevOps teams in Agile environments.

Looking for a Software Engineer to build financial products and tooling for Cash App's Lending team, ensuring quality and compliance while collaborating across domains.

Lead full-stack development of the signup-to-activation experience, inventing and shipping 0-to-1 AI-driven onboarding features across web, messaging channels, and third-party AI assistants. Collaborate with product, design, and data, mentor engineers, scope rapidly, and measure/iterate to improve activation metrics.

The Senior Staff Software Engineer will lead the architecture and implementation of AI-powered developer tools and workflows in a cloud environment. Responsibilities include mentoring, driving innovation, managing project delivery, and fostering a culture of continuous improvement.

Build and operate Go-based backend services and APIs to manage hardware lifecycle (RMA, data center operations, node repairs). Design scalable, reliable microservices, integrate vendor APIs, manage databases for operational and reporting use cases, and deploy/operate services on container platforms.

As a Software Engineer on the Workflows Team, you'll develop the Workflow Development Kit and platform, emphasizing AI integrations, durability, and observability while collaborating with cross-functional teams and engaging with the open-source community.

Develop and enhance AI Gateway platform, contributing to the design and maintenance of features for optimal reliability in AI workloads while collaborating with cross-functional teams.

The Software Engineer will analyze user funnels, design experiments to boost adoption, and address user churn issues to enhance engagement.