333 software engineering intern jobs at 168 companies in California
🚀PromotedHiringCafe
Founding Full-stack / Product Engineer
Cupertino, CA, US
$130k-$300k/yrOn-SiteFull Time
HiringCafe: Building a 100× better job search engine to take on Indeed and LinkedIn.
Help us build a 100× better job search engine. We need a full-stack engineer with great taste, sharp fundamentals, and a track record of shipping polished product on React/Next.js plus a real backend (Firebase, Elasticsearch, Redis, Stripe).
SnailWorks: SnailWorks provides mail tracking and delivery intelligence software for marketers.
Enrolled in Software Engineering/CS program; proficient in TypeScript, Python, or Go; able to read code; curious about data systems and LLM-driven apps; strong written communication; operator mindset.
GenBio AI: Developing AI foundation models to simulate and program biology.
0+ YOECurrently enrolled in a full-time Master’s or Ph.D program; strong CS fundamentals; frontend React/TypeScript; backend with FastAPI; self-starter in fast-paced startup.
Software Engineering Intern – Distributed Simulation Systems
Emeryville, California, United States
$25-$60/hrHybridFull Time, Internship
Astera Institute: Conducts fundamental research in artificial intelligence and longevity science.
Strong programming fundamentals; experience with C++, Python, or similar systems languages; familiarity with Linux; understanding of data structures, algorithms, and concurrency; interest in distributed systems and systems engineering.
C++, Python, Linux, MuJoCo, Unity, Unreal, PyTorch, CUDA
Circleback: AI-powered platform for capturing and managing workplace meeting intelligence.
Experience building end-to-end features (database to UI) for web, desktop, or mobile; prior project or role experience; strong attention to detail, ownership, and curiosity about product.
Instead: AI-powered platform for automated tax preparation and strategy.
Pursuing a CS or related degree, familiarity with JavaScript/TypeScript, HTML, CSS, exposure to Go or Python, strong problem solving, and ability to work onsite in San Francisco.
CTGT: Deterministic governance platform for enterprise AI systems.
Pursuing a Bachelor's in CS or related; strong programming fundamentals in Python or JavaScript; familiarity with Git and basic cloud workflows (AWS or GCP); ability to work independently and communicate technical ideas clearly.
Software Engineering Intern, Vehicle Controls - Fall 2026
Irvine or Palo Alto
$38-$51/hrHybridInternship, Full Time
Rivian and Volkswagen Group Technologies: A joint venture delivering automotive software and connectivity solutions for electric vehicles.
Enrolled in Bachelor's or Master's program in Electrical/Mechanical Engineering or Computer Science; proficient in C/C++ and Python; RTOS experience preferred; familiar with CAN/LIN/UDS/DoIP; experience with microcontrollers and PID controls.
Quantum Design: Manufactures automated materials characterization and scientific measurement systems.
Currently pursuing a bachelor's in CS or related field with ~2 years coursework, Python coding experience, strong communication, problem solving, and attention to documentation and testing.
Fluency: Automates enterprise process mapping and documentation with artificial intelligence.
Currently pursuing or recently completed a CS/Engineering degree (or equivalent experience). Solid programming fundamentals, familiarity with Python or TypeScript, strong communication, and ability to work on-site in San Francisco at least 3 days/week for 13 weeks.
PhD Software Engineering Intern, Decision Intelligence - Fall 2026
Santa Clara, California, United States
$30-$94/hrOnsiteFull Time, Internship
NVIDIANASDAQ: NVDA: Designs graphics processing units and artificial intelligence hardware.
Pursuing a PhD in CS or related field; strong parallel C++ and CUDA programming; deep algorithms and numerical methods knowledge, mathematical programming and heuristics; ability to work independently.
Modeling & Simulation Software Engineering Intern - Fall 2026
Los Angeles, California, United States
$25-$33/hrOnsiteInternship
Hermeus: Develops high-speed and hypersonic aircraft for defense and transportation.
0+ YOEPursuing a degree in Computer Science, Aerospace Engineering, Electrical Engineering, Applied Mathematics, or related field; proficient in Julia or Python/MATLAB/C++; knowledge of 6DOF dynamics; experience with data validation and modeling; GPA 3.0+; strong communication and teamwork.
Xsolla: Provides payment and monetization tools for game developers.
Experience using agentic AI coding tools, full-stack development comfort, proof-of-work portfolio (GitHub or deployed projects), currently a CS/software student or recent graduate, strong initiative and communication.
Claude Code, Cursor, Copilot, GitHub, APIs, SDKs, Loom
PlusAI: AI-based virtual driver software for factory-built autonomous trucks.
0+ YOEMaster’s in Systems Engineering or related field; experience with Autonomous Driving/ADs/Robotics; Python and C++; Linux tools; strong organization and communication.