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38 systems software intern jobs at 33 companies in Vacaville, CA

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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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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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1w
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Software Engineer Intern - Enterprise Systems (Fall 2026)
San Francisco, California, United States
$29/hr OnsiteInternship
Astranis
Astranis: Builds and operates small geostationary communications satellites.
Currently pursuing a B.S. or M.S. in CS/ECE/CE, experience with Python, ability to design/write/test software; embedded, frontend, and devops experience are a plus.
Python
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SWE Intern
San Francisco, California, United States
OnsiteInternship
Chasi
Chasi: AI revenue engine for construction equipment dealers.
1+ YOE1+ internships in production software; full-stack TS/React with backend; experience with LLMs; real-time systems; strong architectural judgment; customer-facing; ownership.
Next.js, TypeScript, PostgreSQL, Redis, Twilio, LiveKit, OpenAI, Anthropic, Deepgram, Vector Databases
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2w
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Rust Software Engineering Intern (Chip Design Tools) - Fall 2026
San Francisco, California, United States
$40-$46/hr OnsiteInternship
fab2
fab2: Designing and manufacturing custom semiconductor fabrication equipment and factories.
Strong Rust or systems C++ experience, systems fundamentals, performance and concurrency skills, portfolio/GitHub required; willingness to learn chip design.
Rust, C++, Bevy, wgpu, Axum, WebAssembly, PostgreSQL, Protobuf, Flatbuffers, Cap\u0002n Proto, WebGPU, Vulkan, OpenGL, GitHub
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Software Engineer, Growth
San Francisco, California, United States
OnsiteFull Time
Broccoli
Broccoli: AI agents for home service business front-office operations.
Strong software engineering fundamentals, production-quality code, full-stack with backend focus, experience building internal tools or growth systems, comfortable in ambiguity and cross-functional work.
ServiceTitan
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3w
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Software Engineer (Agent Platform) - Intern - 2026-2027
San Francisco, California, United States
OnsiteInternship
Netic
Netic: AI platform automating customer outreach and bookings for service businesses.
Internship-level role requiring familiarity with Python and TypeScript, CS fundamentals in distributed systems, exposure to LLM APIs/agent frameworks, and track record of shipping end-to-end projects.
Python, asyncio, FastAPI, TypeScript, Node, React, LLM APIs, LangChain, MCP, RAG, eval frameworks
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3w
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Senior Software Engineer - AI Tooling
San Francisco or New York City
$191k-$263k/yr HybridFull Time
Plaid
Plaid: Provides financial data connectivity and payment infrastructure via APIs.
5+ YOE5+ years professional software engineering experience; proven production systems experience; internal tools/platform building; strong product judgment; hands-on experience with AI development tools or agents.
Retool, Scaffold
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Test Software Engineer (Lead)
San Francisco, California, United States
$130k-$160k/yr OnsiteFull Time
Droyd
Droyd: Builds autonomous robotic systems and the software and hardware infrastructure to automate manual work in production environments.
Strong software engineering fundamentals; experience building internal tools, scripts, and test infrastructure; comfortable working close to hardware and debugging system-level issues; ability to set technical direction and lead a test team.
Python
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2w
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Senior Staff Software Engineer, Engineering Acceleration | Consumer Devices
San Francisco, California, United States
$347k-$385k/yr HybridFull Time
OpenAI
OpenAI: Develops artificial intelligence models and generative AI software services.
10+ YOE10+ years software engineering with 5+ years building CI/CD, internal platforms, or developer productivity systems; experience with secure software delivery and platform architecture.
Terraform, Buildkite, Bazel, Postgres, Cosmos DB, Kafka, Kubernetes
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Software Engineering SMTS/LMTS
Bellevue or San Francisco
$149k-$260k/yr HybridFull Time
Salesforce
SalesforceNYSE: CRM: Sells cloud-based customer relationship management and business software solutions.
4+ YOE4+ MgmtBS in Computer Science, 4+ years (SMTS) or 6+ years (LMTS) experience in system or database internals, deep distributed systems knowledge, technical leadership, and strong Java or C skills.
Java, C, PostgreSQL
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Software Engineer, AI CAD Workflow Automation
Austin or Darmstadt or San Francisco
HybridFull Time
Focused Energy
Focused Energy: Develops laser-driven inertial fusion for clean energy generation.
Build and deploy internal software and AI-assisted CAD workflows; write scripts that interact with CAD systems; strong Python or C++ skills; familiarity with CAD APIs (SolidWorks, Onshape, AutoCAD); ability to write runbooks and train engineers.
Python, C++, SolidWorks, Onshape, AutoCAD, CI/CD
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3w
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Software Engineer (Ray Data)
San Francisco, California, United States
$226k-$241k/yr OnsiteFull Time
Anyscale
Anyscale: Cloud platform for scaling distributed machine learning applications.
3+ YOE3+ years experience building scalable, fault-tolerant distributed systems; experience with data processing and database internals; strong performance focus for AI workloads.
Python, Ray, Ray Data
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Software Engineer, Staff
New York City or San Francisco or Seattle or Los Angeles or United States
$214k-$248k/yr RemoteFull Time
Check
Check: Provides embedded payroll infrastructure for software platforms.
Staff-level ownership of production systems, experience building internal tools or platforms, strong debugging and design skills, ability to collaborate cross-functionally, and willingness to work with Python/Django, React, TypeScript, AWS, Terraform, Postgres, Temporal, and GitHub.
Python, Django, React, TypeScript, AWS, Terraform, Postgres, Temporal, GitHub
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Staff Software Engineer, Internal Tools
New York City or San Francisco or Los Angeles
$227k-$325k/yr HybridFull Time
Tubi
TubiNASDAQ: FOXA: Free ad-supported streaming service for movies and television.
8+ YOE8+ years software engineering experience; deep distributed systems expertise; strong full‑stack skills with Node.js/TypeScript, React/TypeScript, PostgreSQL/Drizzle ORM, and Python; experience integrating LLMs/AI into production systems.
Node.js, TypeScript, Express, React, PostgreSQL, Drizzle ORM, Python, OpenAI, Google Gemini, Claude Code, Codex, Cursor, MCP, LLM
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Staff Software Engineer, Internal Tools
Toronto or San Francisco
$165k-$235k/yr HybridFull Time
Tubi
TubiNASDAQ: FOXA: Free ad-supported video streaming service for movies and shows.
8+ YOE8+ years software engineering experience; deep distributed-systems and full-stack skills; Node.js/TypeScript, React/TypeScript, PostgreSQL (Drizzle ORM), Python; experience shipping production systems and working with OpenAI/Google Gemini APIs.
Node.js, TypeScript, Express, React, PostgreSQL, Drizzle ORM, Python, OpenAI, Google Gemini, Claude Code, Codex, Cursor, MCP, LLM
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Staff+ Software Engineer, GRC Platform
San Francisco or New York City or Seattle
$405k/yr HybridFull Time
Anthropic
Anthropic: Developing safe and reliable artificial intelligence systems.
8+ YOE8+ years building backend systems, data pipelines, or internal platforms; proficiency in Python or Go; experience with cloud platforms and infrastructure-as-code; strong systems thinking and experience with integrations or data infrastructure.
Python, Go, AWS, GCP, Azure, Claude, ServiceNow, Vanta, Drata, OneTrust, REST APIs, webhooks, CI/CD, ELT, ETL, infrastructure-as-code, version control
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Software Engineer (Full-Stack / Product)
San Francisco, California, United States
OnsiteFull Time
Hilbert
Hilbert: AI-powered demand intelligence and growth analytics for consumer brands.
Experienced full-stack engineer with TypeScript, Node.js/Express, React, MongoDB experience; systems architecture, containerization (K8s), monorepo (Nx) familiarity; product-minded and able to build internal tooling and enterprise-grade secure systems.
TypeScript, Node.js, Express, React, MongoDB, Nx, ClickHouse, K8s, SAML, OAuth
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Software Engineer (Internship, Spring 2027)
San Francisco, California, United States
OnsiteInternship, Full Time
Heliux
Heliux: Software platform for managing industrial and manufacturing operations.
Intern-level engineering role; proficiency in Rust, Python, Java, or TypeScript; ability to build scalable systems and work with manufacturing/hardware customers; ITAR eligibility required.
Rust, Python, Java, TypeScript
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Member of Technical Staff, Software Engineer
San Francisco, California, United States
OnsiteFull Time
Plato
Plato: Building foundational infrastructure to train specialized AI agents.
Experience building backend systems, data pipelines, product surfaces, and internal tools for AI/research workflows; strong product engineering judgment, emphasis on correctness, observability, and iteration speed.
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