Software Engineer jobs in California

Relativity Space

Full-time · Long Beach, CA · $154,000 – $230,000

This role develops embedded Linux software for safety-critical avionics systems on rockets, focusing on network switch and camera platform integration. It suits experienced embedded engineers who want to work on high-reliability, real-time systems with visible impact and a fast deployment cycle.

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

Menlo Ventures Portfolio

Full-time · San Francisco, CA · $320,000 – $405,000 · Remote

You'll build and operate autonomous AI agents that handle Anthropic's sales workflows end-to-end, from lead generation through pipeline management, while designing evaluation frameworks to measure agent reliability and business impact. This senior role combines full-stack engineering across agentic systems, web applications, and data infrastructure with hands-on work grounding agent designs in real seller workflows and establishing best practices for the company's growing AI engineering function.

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

NVIDIA

Internship · Santa Clara, CA · $20 – $71 / hour

NVIDIA is hiring interns for spring 2027 to work on performance engineering, benchmarking, and deep learning infrastructure across 8–12 months full-time. The role suits students in computer science, electrical engineering, or related fields who want hands-on experience with GPU computing and performance testing at scale.

Listed on NVIDIA’s careers site · Apply there ↗

Notion

Internship · San Francisco, CA · $57 – $61 / hour · Remote

This is a summer internship at Notion where you'll write production code across their full stack, helping design AI-powered features for their collaborative workspace product. It suits computer science students with some prior internship experience who are curious about AI and want to work on a product used by millions.

Listed on Notion’s careers site · Apply there ↗

Amplitude

Full-time · San Francisco, CA · $131,000 – $200,000

A product-minded engineer building features that help Amplitude customers adopt the platform more broadly, from onboarding new users to expanding usage across teams and departments. This role suits someone who enjoys owning projects end-to-end, working across the full stack, and using data to drive product decisions.

Listed on Amplitude’s careers site · Apply there ↗

KLA-Tencor

Milpitas, CA · $136,300 – $231,700

This role involves building production software for semiconductor manufacturing equipment, where you'll own features across the full stack and solve complex, hardware-integrated system problems. It suits engineers who thrive tackling distributed systems challenges and want meaningful impact on tools that power chip fabrication worldwide.

Listed on KLA-Tencor’s careers site · Apply there ↗

Workday

Full-time · Pleasanton, CA · $176,000 – $264,000

This role leads the design and development of high-performance APIs and frameworks that enable AI agents and product teams at Workday to build scalable integrations. You'll shape API standards, mentor senior engineers, and drive technical decisions across the platform while working on mission-critical backend services.

Listed on Workday’s careers site · Apply there ↗

CrowdStrike

Full-time · Sunnyvale, CA · $140,000 – $215,000

CrowdStrike is seeking a senior backend engineer to build the risk intelligence platform that powers their exposure management suite. You'll architect microservices that process massive cybersecurity data streams using machine learning and AI, working primarily in Golang across distributed systems while mentoring junior engineers.

Listed on CrowdStrike’s careers site · Apply there ↗

NIO

Full-time · San Jose, CA · $163,500 – $212,400

A senior systems engineer role developing NIO's in-house hypervisor and kernel software for electric vehicle platforms, requiring deep expertise in low-level system optimization and automotive real-time computing. This position suits experienced kernel or embedded systems engineers who want hands-on work spanning architecture design through production deployment on safety-critical vehicle systems.

Listed on NIO’s careers site · Apply there ↗

Krea AI

Full-time · San Francisco, CA

Krea is hiring a backend engineer to own their production systems across a full stack spanning SvelteKit, Python, Postgres, Redis, ClickHouse, and Kubernetes. The role suits someone with 4–8 years of experience shipping real systems end-to-end who thrives working independently across unfamiliar codebases and can architect solutions that scale.

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

Agility Robotics

Full-time · Fremont, CA · $187,000 – $292,000

This role develops and deploys reinforcement learning controllers for Agility's Digit humanoid robot, enabling it to move safely and manipulate objects in real warehouse and manufacturing environments. You'll design RL policies, integrate perception systems, build training infrastructure, and ship production policies to robots already operating with major customers.

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

Together AI

Full-time · San Francisco, CA · $240,000 – $280,000

Together AI seeks a seasoned infrastructure leader to establish a new platform engineering team that will define and roll out standardized service architecture across their organization. You'll own the design of Kubernetes and AWS infrastructure patterns, build reusable tooling for service teams, and lead cross-functional initiatives to modernize how services are built and operated.

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

Pylon

Full-time · San Francisco, CA · $150,000 – $180,000

Pylon is hiring new graduates to build features for their AI-powered customer support platform, working full-stack on products that help support and customer success teams operate more efficiently. This role suits recent computer science graduates who want to ship fast in a collaborative startup environment with strong technical mentorship.

Listed on Pylon’s careers site · Apply there ↗

Vercel

San Francisco, CA · $172,000 – $258,000

You'll build and optimize Vercel's global CDN content delivery system, working across caching layers and serving paths to ensure billions of requests perform at scale. This role suits engineers with 2+ years of backend experience who enjoy distributed systems work and want to see their infrastructure changes directly impact millions of developers.

Listed on Vercel’s careers site · Apply there ↗

InstaLily

Full-time · San Francisco, CA · $100,000 – $120,000

Join InstaLILY as an early-stage software engineer building AI infrastructure and products that power enterprise operations at scale. You'll own features end-to-end, work directly with customers in billion-dollar operations, and shape a rapidly growing company alongside a sharp team.

Listed on InstaLily’s careers site · Apply there ↗

Mixpanel

San Francisco, CA

This role involves building full-stack features for Mixpanel's data governance platform, with a focus on keeping customer data clean and trustworthy at scale. You'll take ownership of high-impact projects across the web frontend, backend services, and infrastructure, working closely with engineers and product teams to solve complex analytics challenges.

Listed on Mixpanel’s careers site · Apply there ↗

Suno

Full-time · San Francisco, CA · $188,640 – $247,590

Suno is seeking a fullstack engineer to build creative tools for professional musicians on their AI-powered music platform. This role suits experienced web developers comfortable with both frontend and backend work who want to shape how creators worldwide make music.

Listed on Suno’s careers site · Apply there ↗

Assort Health

San Francisco, CA · $240,000 – $295,000 · Remote

A Staff Engineer role at a rapidly growing healthcare AI startup, leading complex technical projects and mentoring other engineers while building systems for AI-powered patient engagement and scheduling. Suits experienced engineers comfortable with ambiguity who want to shape both technical direction and culture at a critical growth stage.

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

CharacterAI

Redwood City, CA · $180,000 – $300,000 · Remote

Backend engineering role building scalable, high-performance systems for a consumer AI platform serving millions of users monthly. Suited for experienced backend developers comfortable with distributed systems, cloud infrastructure, and cross-functional collaboration.

Listed on CharacterAI’s careers site · Apply there ↗

Zilliz

Redwood City, CA · $175,000 – $250,000

Zilliz seeks a senior engineer to work on the core architecture of their vector database system, focusing on storage, query execution, and distributed systems. This role suits experienced database engineers who want to tackle scalability and performance challenges in AI infrastructure.

Listed on Zilliz’s careers site · Apply there ↗

LangChain

Full-time · San Francisco, CA · $150,000 – $250,000

LangChain seeks a core Python maintainer to evolve their widely-used open-source AI agent frameworks, improving abstractions, documentation, and community support for millions of developers. This role suits someone with strong software engineering fundamentals who enjoys working in fast-paced environments and wants to shape the developer experience around production AI systems.

Listed on LangChain’s careers site · Apply there ↗