Software Engineer jobs in California

Bonfire Studios

Full-time · Irvine, CA · $263,750 – $320,000

A Principal or Lead Systems Engineer role at a game studio building a competitive multiplayer title, responsible for architecting and optimizing core engine systems while potentially mentoring senior engineers. This suits experienced engine programmers who thrive on low-level performance work and want to shape foundational technology for a shipped competitive game.

Listed on Bonfire Studios’s careers site · Apply there ↗

Ando

San Francisco, CA

Ando is building a next-generation messaging platform that integrates AI agents as first-class participants alongside humans. This founding engineer role involves architecting core infrastructure, developer platforms, and memory systems while working on a product designed to reach hundreds of thousands of users.

Listed on Ando’s careers site · Apply there ↗

CharacterAI

Redwood City, CA · $150,000 – $300,000 · Remote

This role focuses on building scalable backend systems and applying machine learning to detect and prevent safety risks on an AI platform where users interact with characters. It suits engineers with deep expertise in distributed systems and ML who want to lead technical strategy on emerging AI safety challenges.

Listed on CharacterAI’s careers site · Apply there ↗

York Space Systems

Full-time · San Francisco, CA · $190,000 – $260,000 · Remote

You.com is seeking a Senior Search Engineer to design and optimize large-scale indexing systems and retrieval mechanisms for their AI-powered search platform. This role suits experienced systems engineers comfortable with distributed infrastructure, performance optimization, and translating research into production code.

Listed on York Space Systems’s careers site · Apply there ↗

Zencastr

San Francisco, CA · Remote

Zencastr seeks a fullstack engineer to build high-performance podcast infrastructure in a remote, distributed team. The role suits ambitious developers who thrive on performance optimization and want to work on scalable systems at a fast-growing startup.

Listed on Zencastr’s careers site · Apply there ↗

Omiai

San Francisco, CA · $300,000

This founding engineer role involves building the full technical stack for an AI wearable platform, working directly with the founder to architect hardware, mobile, and backend systems. It's suited to experienced builders who have shipped products at scale and want significant equity and autonomy in shaping both the technology and product direction.

Listed on Omiai’s careers site · Apply there ↗

Avive

Full-time · Brisbane, CA · $150,000 – $190,000 · Remote

Avive is hiring an integrations developer to build and maintain the backend infrastructure supporting their medical device platform and connected response system. This role partners across business operations, finance, and engineering teams to enable scalable operations and is suited to someone comfortable working in a mission-driven healthcare context where reliability and cross-functional collaboration matter.

Listed on Avive’s careers site · Apply there ↗

Bend Studio

Full-time · San Diego, CA · $150,100 – $225,100

This role builds and automates data infrastructure platforms that support PlayStation's services at massive scale, combining backend development in Go with infrastructure automation and operational reliability work.

Listed on Bend Studio’s careers site · Apply there ↗

Menlo Ventures Portfolio

Full-time · San Francisco, CA · $320,000 – $485,000

This role owns the production systems that process every token Claude generates, managing latency and reliability across all platforms at massive scale. It suits engineers experienced in high-QPS distributed systems who thrive owning operational excellence and making critical trade-offs between performance, reliability, and cost.

Listed on Menlo Ventures Portfolio’s careers site · Apply there ↗

Shield AI

Full-time · San Diego, CA · $200,000 – $300,000

This staff-level role on Shield AI's perception software team focuses on developing autonomous vision and sensing capabilities for defense applications. It suits experienced software engineers specializing in computer vision, robotics, or sensor fusion who want to work on systems that support military and civilian operations.

Listed on Shield AI’s careers site · Apply there ↗

Vercel

Internship · San Francisco, CA · $110,000 – $132,000

Vercel is seeking a software engineering intern to take on real, end-to-end projects as part of their core engineering team, working across their platform that powers developers and AI agents. This role is ideal for computer science students near graduation who can write production code, debug complex systems, and communicate clearly while learning from experienced mentors.

Listed on Vercel’s careers site · Apply there ↗

LangChain

Full-time · San Francisco, CA · $175,000 – $240,000

LangChain is seeking a senior backend engineer to redesign their billing infrastructure into a flexible, self-serve platform that enables teams across the company to launch new pricing models quickly without specialized knowledge. You'll work on complex usage and token-based pricing systems, metering, and invoicing integrations for an AI platform used by major enterprises.

Listed on LangChain’s careers site · Apply there ↗

Intuit

Mountain View, CA · $261,500 – $353,500

A Principal Forward Deployed Engineer working directly with Intuit's highest-value customers and partners to architect and execute complex payment migrations from competitors onto QuickBooks Payments, acting as the hands-on technical lead through discovery, design, execution, and production stabilization. This role suits payments domain experts with deep processor integration experience who thrive owning high-stakes technical relationships end-to-end and can translate nuanced fintech problems into reusable solutions.

Listed on Intuit’s careers site · Apply there ↗

Descript

Full-time · San Francisco, CA · $220,000 – $265,000 · Remote

Descript is seeking a Software Engineer to own full-stack product features across their AI-powered video editing platform, from conception through launch and measurement. This role suits engineers with 5+ years of shipped product experience who thrive in ambiguous environments, care deeply about user experience, and want to shape both product direction and technical systems at a well-funded, product-market-fit startup.

Listed on Descript’s careers site · Apply there ↗

Anyscale

San Francisco, CA · $215,000 – $265,000

Anyscale is seeking a systems engineer to develop and maintain the Ray C++ backend, focusing on distributed scheduler performance, reliability, and architectural improvements. This role suits experienced backend engineers interested in open-source distributed systems and mentoring others on high-impact infrastructure challenges.

Listed on Anyscale’s careers site · Apply there ↗

Relativity Space

Long Beach, CA · $181,000 – $271,000

This role leads the frontend platform powering Relativity Space's rocket factory and launch operations software, owning the operator UI, design system, and shared infrastructure that other teams build upon. It's suited to a senior engineer with deep expertise in React and TypeScript who thrives on high-impact, cross-functional work and can architect systems handling real-time, safety-critical hardware telemetry at scale.

Listed on Relativity Space’s careers site · Apply there ↗

Mixpanel

San Francisco, CA

Join Mixpanel's Data Runtime team to design and build the distributed systems that execute queries across a massive analytics platform processing hundreds of trillions of events. This role suits senior backend engineers who thrive owning complex infrastructure projects end-to-end and want to work alongside experienced systems architects on problems at scale.

Listed on Mixpanel’s careers site · Apply there ↗

Crusoe

San Francisco, CA · $170,000 – $205,000

A senior backend engineer role building the foundational cloud platform services that support Crusoe's AI infrastructure business. You'll own critical systems like the API gateway, quota management, and customer notifications while working on scaling and reliability as the customer base grows.

Listed on Crusoe’s careers site · Apply there ↗

Blue Shield of California

Oakland, CA

This full stack engineer role focuses on building healthcare applications that clinicians and patients rely on, from frontend interfaces to backend systems. It suits experienced engineers who are interested in impactful work and enjoy taking on leadership responsibilities across technical and team-building dimensions.

Listed on Blue Shield of California’s careers site · Apply there ↗

StubHub

Full-time · Aliso Viejo, CA · $200,000 – $370,000

StubHub seeks a full-stack engineer to develop and maintain their ticket marketplace platform across frontend and backend systems, serving millions of users globally. This role suits experienced engineers who can balance system optimization, feature delivery, and operational reliability while working with distributed architectures and modern web technologies.

Listed on StubHub’s careers site · Apply there ↗

Assort Health

San Francisco, CA · $190,000 – $240,000 · Remote

This role involves owning end-to-end technical deployments of AI agents for healthcare systems, building integrations and custom workflows that go live with real patient impact. It suits experienced software engineers who thrive in fast-paced, customer-facing environments and want to solve healthcare's operational complexity.

Listed on Assort Health’s careers site · Apply there ↗

Krea AI

Full-time · San Francisco, CA

Krea is hiring a full-stack engineer to build web and mobile interfaces for AI creative tools, working across Svelte frontends and Node backends with a focus on real-time performance and infrastructure at scale. This role suits experienced JavaScript developers comfortable with both polished UI work and backend systems who want to ship products in the AI space.

Listed on Krea AI’s careers site · Apply there ↗

Agility Robotics

Full-time · Fremont, CA · $230,000 – $299,000

This role involves designing and developing low-level C++ software that controls humanoid robots operating in warehouses and manufacturing plants, with responsibility for hardware interfaces, real-time performance, and system reliability. It suits experienced software engineers comfortable bridging hardware and software domains who want to work on robotics systems at scale.

Listed on Agility Robotics’s careers site · Apply there ↗