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44 systems software intern jobs at 38 companies in Fairfield, 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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Enterprise Systems 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 (CS or related) or be a grad student; experience building software via internships/projects; strong programming fundamentals in Python, Go, React, or TypeScript; able to work full-time onsite Fall 2026.
Python, Go, React, TypeScript
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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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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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3w
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Senior Software Engineer
Fremont, California, United States
$135k-$150k/yr OnsiteFull Time
Fiery
Fiery: Provider of digital front ends and print workflow solutions.
5+ YOE5+ years system/software development experience; strong C/C++ skills; expertise in Windows and Linux, OS internals, networking, debugging, and performance optimization.
C, C++, Windows, Linux, TCP/IP, sockets, CI/CD
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2w
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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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Software Engineer - Platform & Infrastructure
Washington or San Francisco
$165k-$220k/yr HybridFull Time
Promise
Promise: Providing payment and financial assistance systems for government agencies.
5+ YOE5+ years of software or infrastructure experience in a platform/infra/SRE role; production Kubernetes; Terraform IaC; internal systems; on-call; AI tools experience.
Kubernetes, Terraform, Google Cloud Platform, CI/CD, ArgoCD, Typescript, Golang, AI tools
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4d
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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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1w
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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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3mo
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Senior Software Engineer - DevX & AI Enablement
San Francisco, California, United States
$200k-$250k/yr HybridFull Time
Grow Therapy
Grow Therapy: Platform connecting mental health providers with patients and insurance.
5+ YOE5+ years in software/platform engineering; AI-enabled systems; internal platforms/tools; cross-functional collaboration; security and data governance.
MCPs, AI skills frameworks, orchestration frameworks, APIs, data warehouses, CRMs, finance tools, internal databases, LLMs, AI agent frameworks
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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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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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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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1w
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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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4w
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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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1mo
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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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1mo
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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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1mo
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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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Staff Software Engineer - Security
San Mateo, California, United States
$220k-$270k/yr HybridFull Time
Skydio
Skydio: Develops autonomous AI drones for defense and industrial inspection.
7+ YOE7+ years in cloud/platform/infrastructure security, strong AWS experience, proficiency with Python or Go, familiarity with SIEM and vulnerability management, experience reviewing system designs/RFCs, and ability to build internal security tooling.
AWS, Python, Go, SIEM, Kubernetes, SSO, SCIM, FedRAMP, SOC 2, ISO 27001, Texas RAMP, CJIS
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3w
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Principal Software Engineer - Compute (Kubernetes)
San Mateo, California, United States
$345k-$399k/yr HybridFull Time
Roblox
RobloxNYSE: RBLX: Platform for creating and playing user-generated 3D digital experiences.
10+ YOE10+ years building and operating large-scale distributed systems; deep Kubernetes internals expertise; production-scale platform, security, and networking experience; strong technical leadership and communication skills.
Kubernetes, etcd, API server
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