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84 software developer internship jobs at 55 companies in Vallejo, CA

PromotedHiringCafe
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
3w
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Software Engineer Internship
San Francisco, California, United States
$65/hr OnsiteFull Time, Internship
Lindy
Lindy: AI-powered platform for building and managing autonomous virtual assistants.
Currently enrolled in CS/Software Engineering or related program; experience with JavaScript/TypeScript or Python; exposure to AI/ML and web development; built side projects; teamwork and passion for AI.
TypeScript, GraphQL, Relay, Kubernetes, GCP, Python, JavaScript
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5d
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Software Engineer
Colorado Springs or Irvine or Longmont or Fremont or Rochester or San Jose
$111k-$148k/yr OnsiteFull Time
Western Digital
Western DigitalNASDAQ: WDC: Design and manufacture data storage devices and systems.
0+ YOEPursuing or recent Bachelor's/Master's in a technical field; experience with C/C++, Python, Java, Go, SQL, or JavaScript through coursework or internships; familiarity with software fundamentals, debugging, and development tools.
C, C++, Python, Java, Go (Golang), SQL, JavaScript, Microsoft Office, Git, Linux, IDEs
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3mo
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Software Engineer, Safety
San Francisco, California, United States
$127k-$185k/yr OnsiteFull Time
Amazon
AmazonNASDAQ: AMZN: Global online retail and cloud computing technology provider.
1+ YOE1+ years non-internship software development; 1+ years professional experience; knowledge of modern languages/frameworks; strong CS fundamentals; Bachelor's in Computer Science or equivalent.
Golang, Typescript/React, iOS, Android, AWS (ECS, DynamoDB, Lambda, SQS, Step Functions)
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1mo
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Software Engineer
San Francisco, California, United States
$162k-$174k/yr HybridFull Time
Klaviyo
KlaviyoNYSE: KVYO: Customer data platform for e-commerce marketing and automation.
Master's degree in CS/CE/SE/Electronics/Electrical required. Experience with Python, AWS cloud technologies, Agile Scrum, and UI/UX via coursework, project, thesis, or internship.
Python, AWS, Agile Scrum, UI/UX, Covey Scout
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1mo
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Software Engineer, Ads Product
Palo Alto, California, United States
$150k-$350k/yr OnsiteFull Time
xAI
xAI: Develops advanced artificial intelligence systems to understand the universe.
0+ YOEStrong software engineering fundamentals; interest in backend systems, data pipelines, or AI applications; ownership mindset; ability to ship; proven experience via internships, projects, research, open-source, startups, or full-time roles.
React, Golang, Python, Rust, gRPC, Java, Scala
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3mo
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SWE Internship (Summer 2026)
San Francisco, California, United States
OnsiteInternship
Blackstar Computers
Blackstar Computers: Building AI-native personal computing hardware and software systems.
Pursuing/completed degree in computer science or related field; seeking software engineering internship.
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2w
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Software Engineer, Intern
San Francisco, California, United States
OnsiteInternship, Full Time
Pylon
Pylon: AI-native customer support platform for B2B companies.
Pursuing a BS/MS in computer science or related field, graduating Dec 2026–Summer 2027; willing to relocate to San Francisco; strong full‑stack fundamentals; internship or side projects preferred.
React, Golang, GraphQL, AWS
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1mo
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Software Engineer - Consumer Medical Testing
Fremont, California, United States
$124k-$133k/yr OnsiteAll Commitments Available
UL Solutions
UL SolutionsNYSE: ULS: Provides safety science testing, inspection, and certification services globally.
4+ YOESoftware development experience; JavaScript/TypeScript; HTML/CSS; React; Node.js; 4 years total; US work authorization; onsite Fremont, CA; Bachelor's in CS.
HTML, CSS, Tailwind CSS, JavaScript, TypeScript, React.js, antd, shadcn, Redux, React Context API, Node.js, Python, Express.js, SQLite, MySQL, MongoDB
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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
Redwood City, California, United States
$35-$40/hr HybridInternship, Temporary
PubMatic
PubMaticNASDAQ: PUBM: Operates a global digital advertising supply chain technology platform.
1+ YOEBS/MS in Computer Science (or equivalent); 1+ years development in C/C++ on Linux/UNIX; strong DS&A, OS/system programming, multithreading, production troubleshooting; scripting (Perl/Python/Shell) and MySQL experience.
C, C++, Linux/UNIX, Perl, Python, Shell, MySQL, Go
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3d
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Software Engineering Intern, Device Experiences
San Francisco, California, United States
OnsiteFull Time
HP
HPNYSE: HPQ: Manufactures personal computers, printers, and 3D printing hardware.
Internship in software engineering focused on device experiences; role entails participating in software development and team projects.
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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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4w
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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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Software Engineer II, Developer Experience
Livingston or New York or Bellevue or San Francisco or Sunnyvale
$109k-$204k/yr HybridAll Commitments Available
CoreWeave
CoreWeaveNASDAQ: CRWV: Cloud platform providing GPU-accelerated infrastructure for AI workloads.
2+ YOE2+ years of software engineering; Go or Python; cloud-native services; Kubernetes basics; CI/CD; interest in AI-powered tooling.
Go, Python, Kubernetes, CI/CD, Cloud
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1mo
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Software Engineer, Sales
San Francisco, California, United States
$134k-$209k/yr HybridMultiple Commitments Available
DocuSign
DocuSignNASDAQ: DOCU: Provides electronic signature and agreement management software solutions.
5+ YOE5+ years IT apps with Salesforce configuration, customization and support; frontend experience with Salesforce integrations; Aura/LWC development; Salesforce Cloud products; Einstein Analytics; SaaS apps like Eloqua, D&B Optimizer, ZoomInfo, Outreach; Salesforce Platform Developer I preferred.
Salesforce, Aura, Lightning Web Components, Einstein Analytics, CI/CD, Data Loader, Web Services, Angular, React, Sales Cloud, Service Cloud, Experience Cloud, Eloqua, D&B Optimizer, ZoomInfo, Outreach, Apex
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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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1mo
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Co-Op, Software Engineer - Action Runtime
San Francisco or New York City or Seattle or Little Rock
$31-$49/hr OnsiteFull Time, Internship
LiveRamp
LiveRampNew York Stock Exchange: RAMP: Provides a platform for secure data collaboration and identity.
Pursuing or completed a CS/STEM degree, strong coding skills, readiness to commit production code, willingness to learn; internships 12–24 weeks with mentor and orientation training. Bonus: Java, big data, cloud, Kubernetes, React, TypeScript.
Java, Core Java, Hadoop, Spark, SingleStore, GCP, AWS, Azure, Kubernetes, Cadence, Scala, React, Ruby on Rails, Node.js, TypeScript, Express.js
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1w
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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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2w
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iOS Mobile Software Developer I
Seattle or San Francisco or Detroit
$119k-$145k/yr HybridFull Time
Rocket Companies
Rocket CompaniesNYSE: RKT: Provides digital mortgage, real estate, and personal finance services.
0.5+ YOEBachelor's in CS or related, 6+ months native iOS experience, Swift and SwiftUI proficiency, internship or professional experience, strong communication and CS fundamentals.
Swift, SwiftUI, GitHub Copilot, Anthropic Claude Code, Cursor
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1d
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SAP Globalization iXp Intern - Software Developer
Palo Alto, California, United States
HybridInternship, Full Time
SAP
SAPFrankfurt Stock Exchange: SAP: Sells enterprise resource planning and business management software solutions.
Current Bachelor's or Master's student in a technical field; hands-on experience with Python/Java/JavaScript, AI/ML, SQL, and Git; familiarity with SAP BTP and cloud-native development preferred.
Python, Java, JavaScript, SAP BTP, Cloud Foundry, CAP, OData, SQL, GitHub, CI/CD, RDF, SPARQL, ABAP
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