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110 software engineering intern jobs at 79 companies in Fairfield, CA

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Founding Full-stack / Product Engineer
Cupertino, CA, US
$130k-$300k/yr On-SiteFull Time
HiringCafe
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).
React, Next.js, TypeScript, Firebase, Elasticsearch, Redis, Stripe
Help us #BeatIndeed & #BeatLinkedIn
1mo
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Software Engineering Intern
San Francisco, California, United States
OnsiteInternship
SnailWorks
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.
TypeScript, Python, Go
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2mo
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Software Engineering Intern – Distributed Simulation Systems
Emeryville, California, United States
$25-$60/hr HybridFull Time, Internship
Astera Institute
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
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2w
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Software Engineering Intern (Summer 2027)
San Francisco, California, United States
$8k-$12k/mo OnsiteFull Time, Internship
CTGT
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.
Python, JavaScript, Git, AWS, GCP, GPT-120B OSS, HaluEval
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1mo
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Software Engineering Intern (San Francisco)
San Francisco, California, United States
OnsiteInternship
Instead
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.
Vue.js, Nuxt, Go, JavaScript, TypeScript, HTML, CSS, Python
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1mo
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Software Engineering Intern (Summer 2027)
San Francisco, California, United States
$7k-$10k/mo OnsiteInternship
Circleback
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.
React, Electron, React Native
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3mo
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Intern - Software/ML Engineering
San Francisco or Toronto
HybridInternship
Human Computer Lab
Human Computer Lab: A research-focused technology lab working on human-robot interaction and intelligent systems.
0+ YOEPursuing degree in CS/EE/CE; strong Python/C++; ML frameworks; robotics/vision/reinforcement learning; experience with simulations; team player.
Python, C++, Machine Learning Frameworks, Simulation Tools
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2mo
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AI Software Engineering Intern
Hillsboro or Folsom
$101k-$137k/yr HybridInternship
Intel
IntelNasdaq: INTC: Designs and manufactures microprocessors and semiconductor components.
0.5+ YOEPart-time internship; pursuing degree; 3+ months in C/C++, Linux, floating-point; GPU/CUDA interest.
C, C++, Linux, CUDA, GPU, Floating-point
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2mo
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Infrastructure Software Engineering Intern - Fall
San Francisco or Austin
$110k-$132k/yr OnsiteInternship
Atomic Semi: Building compact and rapid-turnaround semiconductor fabrication facilities.
0+ YOEPursuing BS in CS/CE or demonstrated software engineering skill; strong Rust/Go; Linux systems; distributed systems; infra tooling; portfolio required.
Rust, Go, Linux, Systemd, Python
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3d
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Engineering Intern
San Francisco, California, United States
$40-$50/hr OnsitePart Time, Internship
Fluency
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.
Python, TypeScript, React, LLM APIs, RAG, agents
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2mo
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Summer Engineering Intern
San Francisco, California, United States
$6k-$8k/mo OnsiteInternship
Varick Agents
Varick Agents: A fast-growing startup delivering AI solutions for large enterprises without mentioning the name.
Pursuing CS or related degree; strong programming fundamentals; full-stack capability; focus on code quality and reliable shipping; high initiative.
Python, JavaScript, React, Next.js, AWS, GCP, Azure, Graph databases, OCR, Information extraction, LLM APIs
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2w
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Software Engineer Intern (Fall 2026)
South San Francisco, California, United States
$54/hr OnsiteFull Time, Internship
Zipline
Zipline: Operates an autonomous drone delivery system for medical supplies.
Must have completed second year of undergraduate studies (masters/PhD also eligible); strong CS fundamentals, passion for software development and product-focused engineering.
React Native, Python, Go
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2mo
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Manager, Software Engineering (Tools & Frameworks) - Developer Connections
Los Angeles or Mercer Island or Redwood City or San Francisco
$207k-$290k/yr HybridFull Time
Riot Games
Riot Games: Developing and publishing competitive multiplayer video games.
7+ YOE1+ Mgmt7+ years software engineering, 1+ year people management, proficient in Go or Java, experience building shared libraries/platforms, product mindset for internal tools, familiarity with AI/LLM integrations and containerization.
Go, Java, Kubernetes, CI/CD, AI/LLM integrations, Containerization, Slack/Discord platforms
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2w
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Software Engineering Manager, Database (SmithDB)
San Francisco, California, United States
$215k-$260k/yr OnsiteFull Time
LangChain
LangChain: Tools for building and deploying production-ready AI agents.
7+ YOE2+ Mgmt7+ years in systems or database engineering with 2+ years in a technical lead/management role; production Rust experience; deep knowledge of storage and query internals; systems performance analysis; Kubernetes production experience; familiarity with cloud object stores; proven people management.
Rust, Kubernetes, S3, GCS, Azure Blob, Parquet, Arrow, OpenTelemetry, ClickHouse, Prometheus, Tokio, LangSmith, LangChain, LangGraph, Deep Agents, LangSmith Engine
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2mo
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Software Engineer Intern
San Francisco, California, United States
OnsiteFull Time
Phonely
Phonely: AI-powered voice platform for automated customer phone interactions.
Pursuing or recently completed degree in Computer Science or related field; experience with JavaScript/TypeScript and modern frontend frameworks; familiarity with Next.js; strong problem-solving and debugging skills; ability to work with customers and teammates; eager to learn quickly.
JavaScript, TypeScript, React, Next.js, Python, AWS, GCP, Kubernetes, Redis, Datadog
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2mo
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Software Engineer Intern
San Francisco, California, United States
OnsiteInternship
Kos
Kos: AI-powered automated financial operations for industrial infrastructure.
CS/ML student; hands-on project or internship; proficient in Python, TypeScript, or Go; experience with LLMs/agents; production-ready coder; able to work in SF onsite.
Python, TypeScript, Go, LLMs, agents, ERP integration
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2mo
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Software Engineer Intern - Backend Focused - Winter 2027
New York or San Francisco or Seattle
OnsiteInternship, Temporary
Rippling
Rippling: Unified platform managing workforce HR, IT, and finance operations
Current undergraduate/graduate student in CS or related field, previous software engineering internship experience with Python, backend programming skills, strong communication and critical thinking.
Python, Slack, Microsoft 365
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3mo
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Software Engineer Intern (Fall 2026)
San Francisco, California, United States
HybridInternship
Notion
Notion: Provides a unified workspace for notes, documents, and project management.
0+ YOEPursuing a bachelor's or master's in CS/engineering; must graduate before Summer 2027; prior internship experience; proficient in TypeScript, Node.js, or Python.
Typescript, Node.js, Python, React
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3mo
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Software Engineer, Engineering Acceleration | Consumer Devices
San Francisco, California, United States
$230k-$342k/yr HybridFull Time
OpenAI
OpenAI: Develops artificial intelligence models and generative AI software services.
7+ YOE7+ years software engineering; 5+ years building developer productivity, CI/CD, internal platforms, or engineering systems; strong architecture and platform design; hybrid work in San Francisco.
Buildkite, Bazel, Terraform, PostgreSQL, Cosmos DB, Kafka
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2mo
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Software Engineer Intern (Fall / Winter 2026)
San Francisco or Canada
RemoteInternship
Cohere
Cohere: Provides enterprise-grade large language models and AI software platforms.
Enrolled in a post-secondary program; available for a full-time 3-6 month internship; remote; roles across frontend, backend, full-stack, and infrastructure.
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4d
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Software Engineer Intern
San Francisco, California, United States
$11k/mo OnsiteFull Time
Serval: AI platform for automating IT and enterprise service workflows.
Currently pursuing a technical degree (graduation 2026–2028), strong CS fundamentals, familiarity with a backend language (Go/Java/Python), clear communication, and eagerness to learn in a startup environment.
Go, gRPC, Kubernetes, React, TypeScript, AWS, Terraform
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