35 backend engineer intern jobs at 23 companies in Berkeley, CA

PromotedHiringCafe
Founding Backend / Infra Engineer
Cupertino, CA, US
$160k-$300k/yr On-SiteFull Time
HiringCafe
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.
Node.js, Python, Elasticsearch, Redis
4w
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Backend Engineering Intern
San Francisco or Istanbul or Ankara
HybridFull Time, Internship
PlusMinusOne
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.
Git
2mo
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Software Engineer- Backend Intern (Fall 2026)
San Francisco, California, United States
$29/hr OnsiteInternship
Astranis
Astranis: Builds and operates small geostationary communications satellites.
Pursuing a CS degree; strong Python; databases and pub/sub/streaming experience; open to applicants not matching all criteria.
Python, PostgreSQL, RabbitMQ, Apache Flink, Kubernetes
1w
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Backend Software Engineer Intern(Media Platform) - 2026 Summer (BS/MS)
San Jose, California, United States
OnsiteInternship
TikTok
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.
Golang, C, C++
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
6d
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Backend Development Engineer Intern (Infrastructure Platform Delivery) - 2026 Fall (BS/MS)
San Jose, California, United States
OnsiteInternship
ByteDance
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.
Java, Go, C/C++, MySQL, Redis, Linux, TCP, UDP, HTTP
1mo
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Compiler Engineer — LLVM Backend
Mountain View, California, United States
$180k-$320k/yr OnsiteFull Time
DensityAI
DensityAI: Designing custom AI hardware accelerators for large language models.
5+ YOEExpert LLVM backend internals, 5+ years compiler engineering with LLVM target development, strong computer architecture and ISA design knowledge, debugging compilation correctness and performance; MLIR/GPU/linker experience optional.
LLVM, TableGen, MLIR, Microsoft Excel
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.
3d
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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
2mo
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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
2mo
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Software Engineer Intern - Data Infrastructure and Tools
Santa Clara, California, United States
$19-$65/hr OnsiteInternship
PlusAI
PlusAI: AI-based virtual driver software for factory-built autonomous trucks.
0+ YOEPython backend development; CI/CD, data infra, analytics mindset; strong problem-solving skills.
Python, Git, CI/CD, Spark, Cloud
1mo
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Intern Conversion: Software Developer
Poughkeepsie or Lowell or Durham or Bellevue or San Jose or Dallas
$88k-$152k/yr HybridFull Time, Internship
IBM
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
1mo
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Software Engineering Intern
Palo Alto, California, United States
$8k-$10k/mo OnsiteInternship
GenBio AI
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.
React, TypeScript, FastAPI, Python, REST, SQL, NoSQL, Docker
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
1w
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Senior Software Engineer (CALC engine) (copy)
Mountain View or San Francisco or Bucharest or Cluj-Napoca or Paris or Munich or London or Pune or Sydney or United States
$220k-$230k/yr RemoteFull Time
Aera Technology: A Decision Intelligence platform building AI-driven decision automation and analytics.
Expert backend Java engineer with low-latency performance, JVM internals, threading and GC knowledge, language/design skills, and experience building high-performance calculation engines.
Java, JVM, Spring, Claude Code
2mo
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Software Engineer (Platforms & Integrations)
San Mateo or United States
$123k-$183k/yr HybridFull Time
Salma Health
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.
Node.js, Python, Ruby, AWS
2mo
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Staff Software Engineer
Boston or Kyiv or Seattle or Lviv or San Francisco
HybridFull Time
DataRobot
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.
Kubernetes, Python, Go, Helm, Terraform, Pulumi, Kyverno, Cilium, GitOps, CI/CD
1mo
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Software Engineer, Internal Applications - Enterprise
San Francisco, California, United States
$293k-$342k/yr RemoteFull Time
OpenAI
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
1mo
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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.
1mo
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Staff AI Application Engineer, Product
San Francisco or Seoul
$220k-$240k/yr HybridFull Time
Twelve Labs
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.
Python, Go, Claude Code
2d
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Full Stack Software Engineer - Camera & Photos Tools & AI Team
Cupertino, California, United States
OnsiteFull Time
Apple
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.
Swift, Python, LLM