Top Software Engineer Jobs in San Francisco Bay Area, CA

Build and launch scalable software, APIs, and tooling for Adyen’s payments platform. Own projects from requirements through production, improve platform robustness and performance, and collaborate across teams and time zones. The role requires hands-on Java development, REST APIs, webhooks, SQL/PostgreSQL, and experience with complex distributed systems.

Build and maintain scalable full-stack web applications for Snap’s user-facing products. Develop interfaces and services, optimize performance, contribute to shared libraries, analyze operational and engagement metrics, and use AI-assisted workflows while maintaining code quality, security, scalability, and production readiness.

Lead the technical direction and delivery of Bitcoin and stablecoin experiences for iOS across Cash App, Square, and Bitkey. Build and ship complex features end to end, establish architecture and shared systems, integrate backend services, improve testing and release safety, and mentor engineers. Collaborate across product, design, Android, web, and backend teams while applying AI-assisted development practices and contributing to secure, reliable customer experiences.

Build and improve full-stack software for engineers operating mission-critical hardware. Responsibilities include developing React and TypeScript/JavaScript interfaces, contributing to backend services and APIs, creating reliable data flows, debugging across systems, writing tested code, and collaborating on greenfield products. The intern will work closely with software engineers and operators while gaining experience across frontend, backend, databases, and hardware-connected systems.

Lead technical direction and hands-on development of Bitcoin and stablecoin iOS products across Cash App, Square, and Bitkey. Own architecture, implementation, testing, service integration, rollout, observability, security, and post-launch improvements. Build foundational systems, mentor engineers, influence cross-team standards, collaborate across platforms, and integrate AI-assisted development tools while maintaining software quality and reliability.

Build full-stack AI governance and observability features for Hex’s data platform. Responsibilities include developing React and TypeScript interfaces, backend language parsers, SQL generation, AI context systems, semantic models, agent audit tools, and workflows for governing and debugging AI-generated answers. The role requires solving front-end UX and backend scalability challenges while working with data teams and modern data warehouse technologies.

Build backend-leaning product features for Hex’s AI analytics platform, including APIs, CLI workflows, MCP integrations, access-control systems, enterprise administration, and full-stack product changes. Design scalable systems, implement complex business logic, collaborate through RFCs and code reviews, and contribute across the application stack. The role uses TypeScript, GraphQL, Postgres, Redis, Kubernetes, AWS, and related infrastructure technologies.

Design and evolve shared backend infrastructure, including APIs, realtime transport, storage frameworks, background job systems, workflow orchestration, and internal tooling. Improve reliability, performance, observability, and security while partnering with product teams on reusable abstractions. Lead technical design discussions, drive migrations and refactors, mentor engineers, and help establish backend architecture and engineering standards.

Entry-level software engineers will contribute to team projects, write tested and extensible code, navigate large codebases, debug and review code, collaborate with stakeholders, manage quality and delivery trade-offs, and actively pursue professional growth. The role is part of Affirm’s early-career program and involves hybrid work in New York City or San Francisco during the first year.

Build and improve backend services, REST APIs, monitoring, CI/CD pipelines, content-management integrations, and reliable customer-facing features. The role requires collaborative software development experience with prominent programming languages, REST integrations, Git, and server technologies such as Docker, NGINX, and Node.js. Experience with enterprise content management systems, AWS, Java, Freemarker, or Rust is advantageous.

Develop and ship high-performance iOS applications and camera experiences for Snapchat. Responsibilities include designing and implementing tested Objective-C software, launching features, evaluating technical tradeoffs, collaborating with Design, conducting code reviews, and using AI tools while maintaining strong standards for correctness, security, performance, and scalability.

Develop Android features and customer-facing mobile experiences from design through launch. Build smooth, stable, scalable products using Kotlin, Java, RxJava, Dagger, and AI-assisted engineering workflows. Evaluate technical tradeoffs, collaborate with design, conduct code reviews, and uphold standards for correctness, security, performance, and production quality.

Develop and launch scalable Android features from design through implementation, creating smooth and stable user experiences. Evaluate technical tradeoffs, collaborate with design, conduct code reviews, and maintain high standards for correctness, security, performance, and production readiness. Use Kotlin, Java, RxJava, Dagger, and AI-assisted development tools. The role requires substantial software development experience and Android application expertise.

Software Engineering Interns develop, deploy, test, monitor, and present meaningful production projects during a 12–16 week internship. Interns collaborate with mentors and managers to define projects aligned with team needs, ship code, and verify production performance. Work may involve backend or frontend development, data processing, automated testing, APIs, cloud platforms, and financial technology.

Build and maintain scalable full-stack web applications and systems for Snap products. Develop user interfaces, optimize performance and browser rendering, contribute to shared libraries, analyze operational metrics, and deliver secure, production-ready code. The role requires strong front-end and back-end development skills, testing knowledge, distributed systems experience, and the ability to use AI tools responsibly in engineering workflows.

Develops, tests, troubleshoots, and delivers secure, scalable ServiceNow software solutions in an agile environment. Designs application architectures, writes production code, creates custom widgets, configures and scripts the ServiceNow platform, and supports operational stability. Uses AI-assisted development tools responsibly, analyzes data to improve applications, contributes to engineering practices, and collaborates with business analysts on estimates and delivery plans.

Design, implement, operate, and scale critical backend services such as identity, social graph, and persistence systems. Collaborate across teams to deliver product solutions, test and debug code, and apply best practices for availability, scalability, security, operational excellence, and cost management. Independently deliver medium-sized features, support incident resolution, and use AI tools responsibly to improve development workflows while maintaining production-quality standards.

Build and polish Notion’s native Android experience using Kotlin and Jetpack Compose. Develop core features such as page rendering, editing, navigation, Home, Search, and Inbox while improving startup time, scrolling, typing latency, reliability, offline functionality, and memory use. Partner with product and design, use AI coding tools, own a core product area, and contribute to testing, monitoring, and shared mobile frameworks.

Build and evolve Notion’s iOS platform, including shared frameworks, architecture, testing, build systems, observability, CI/CD, and release-quality tooling. Partner with mobile AI and core product engineers to improve developer workflows, evaluate iOS capabilities, and drive adoption of platform standards. Use AI tools and agents to enhance engineering productivity while supporting a reliable mobile application used by millions.

Build and operate full-stack compliance platforms for transaction search, entity labeling, ingestion, and workflow automation. Responsibilities include designing microservices and event-driven systems, writing tested code, improving sensitive financial data quality, building self-service tools and high-volume pipelines, partnering with Compliance and Risk teams, and participating in on-call operations. The role also involves using AI-powered development tools, reviewing code, and supporting engineering standards.

Build and launch scalable fullstack web applications and APIs for Affirm’s Ads Platform. Collaborate with product, design, analytics, and engineering partners to break projects into deliverable phases, make technical trade-offs, write tested and extensible code, monitor service metrics, support on-call operations, review code, and participate in team development and interviews.

Develop backend tools and systems that improve batch development, testing, workflow efficiency, and reliability. Collaborate with product, infrastructure, design, and analytics teams; break projects into deliverable phases; build scalable, well-tested code; monitor metrics; support system availability and on-call operations; debug code; conduct reviews; and contribute to engineering growth and hiring activities.

Build and ship full-stack software for CoreWeave’s internal data infrastructure and operational applications. Develop TypeScript, React, and Next.js frontends; Python services on Kubernetes; SQL queries and data models; and AI-enabled interfaces such as text-to-SQL tools, retrieval systems, and agents. Own scoped features through production, including testing and post-release fixes, while collaborating with senior engineers and internal users.

Develop and maintain Android features for Crunchyroll’s mobile monetization experiences. Own feature delivery with emphasis on code quality, performance, scalability, and user experience. Collaborate with Engineering, Product, Design, and Program Management; participate in architecture discussions, code reviews, technical planning, on-call support, and testing. Identify technical debt and reliability issues while improving development practices and operational efficiency across large, modular codebases.

Build and improve high-traffic consumer web experiences using React and TypeScript. Contribute to experimentation, client-side tagging, marketing integrations, attribution, measurement, performance, testing, observability, and privacy-aware development. Collaborate with Product, Design, Marketing, Analytics, Data Engineering, and senior engineers. Break down projects, write reliable and extensible code, support operations and on-call efforts, participate in code reviews, and contribute to team growth.