35 backend engineer intern jobs at 23 companies in Berkeley, CA
🚀PromotedHiringCafe
Founding Backend / Infra Engineer
Cupertino, CA, US
$160k-$300k/yrOn-SiteFull Time
HiringCafe: Building a 100× better job search engine to take on Indeed and LinkedIn.
Own the crawlers, pipelines, and infrastructure powering a real-time job search engine. Strong Node.js and Python fundamentals; bonus points for security and reverse-engineering chops.
PlusMinusOne: Develops and markets a portfolio of utility and lifestyle apps
0+ YOE3rd/4th-year CS or engineering student with backend interest; hands-on backend experience via coursework/projects/internships; OOP, data structures, algorithms, and Git familiarity; strong analytical and communication skills.
TikTok: Global short-form video hosting and social media platform.
Currently pursuing a BS or MS in CS or related field; 12-week summer availability; programming experience with Golang,C,C++; understanding of data structures, algorithms, and system design; willingness to learn in a fast-paced environment.
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.
Backend Development Engineer Intern (Infrastructure Platform Delivery) - 2026 Fall (BS/MS)
San Jose, California, United States
OnsiteInternship
ByteDance: Developing AI-driven content platforms and mobile applications.
Final-year or graduating BS/MS students in CS or related fields; strong coding, data structures and algorithms; proficiency in Java, Go, or C/C++; able to commit 12 weeks in 2026.
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.
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.
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.
Poughkeepsie or Lowell or Durham or Bellevue or San Jose or Dallas
$88k-$152k/yrHybridFull Time, Internship
IBMNew York Stock Exchange: IBM: Global technology providing enterprise software, cloud, and consulting.
Must be currently enrolled in a Bachelor’s or Master’s in Computer Science or related field, available for an in-person full-time co-op (Jan–Jun 2026). Familiarity with HTML, CSS, JavaScript, React/Angular/Vue, backend tech (Node.js/Java/Python/SQL), Git/IDEs, APIs, containers, and cloud platforms. Must be able to work without visa sponsorship.
HTML, CSS, JavaScript, React, Angular, Vue, Node.js, Java, Python, SQL, Git, IDEs, APIs, IBM Cloud, AWS, Microsoft Azure, Linux, Unix, GO, NodeJS, Eclipse, Microsoft Visual Studio Code, PostgreSQL, MySQL, Db2, Oracle, SQL Server, Jenkins, Puppeteer, Selenium, Playwright, Cypress, Travis, REST API
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.
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.
Salma Health: Delivers integrated brain health clinical care and diagnostic technology.
3+ YOE3–5 years in software engineering; backend systems and APIs; AWS; multi-language tech; integrations with EHR/CRM; internal tooling; production systems in fast-paced environments.
Boston or Kyiv or Seattle or Lviv or San Francisco
HybridFull Time
DataRobot: Provides an enterprise platform for building and governing AI.
7+ YOE7-10+ years in engineering with 5+ years in infrastructure/platform/backend; Kubernetes internals; Python/Go; multi-cloud or hybrid deployments; IaC; GitOps; strong mentoring and leadership.
OpenAI: Develops artificial intelligence models and generative AI software services.
Experienced in building production frontend and backend systems, designing interfaces for operational/internal tools, strong backend fundamentals (APIs, data modeling, integrations), security-conscious design, and cross-functional collaboration.
IAM, ITSM, RBAC, Zero Trust, APIs, SOC 2, ISO 27001, FedRAMP, NIST
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.
Twelve Labs: AI foundation models for video search and human-like understanding.
Strong backend engineering in Python or Go, system design and 0→1 internal product experience, experience with large unstructured datasets, full-stack capability, and familiarity with cloud data platforms, data governance, and access control.
Full Stack Software Engineer - Camera & Photos Tools & AI Team
Cupertino, California, United States
OnsiteFull Time
AppleNASDAQ: AAPL: Designs and sells consumer electronics, software, and online services.
Build internal imaging tools and end-to-end software using native Swift, modern web frontends, and Python backends; integrate AI/LLM models; collaborate with engineering and science teams to deliver reliable tools.