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36 software engineer intern summer 2026 jobs at 5 companies in Berkeley, CA

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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
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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2w
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Software Engineer Intern (Experimentation & Evaluation, Data Platform) - 2026 Summer (BS/MS)
San Jose, California, United States
OnsiteInternship
TikTok
TikTok: Global short-form video hosting and social media platform.
Pursuing a BS/MS in software/computer science/engineering, available for a 12-week Summer 2026 internship, coding experience in Python/Java/Golang/C#/C++, and able to complete an online HackerRank assessment.
Python, Java, Golang, C#, C++, HackerRank
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3mo
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Software Engineering Intern (Summer 2026)
Palo Alto, California, United States
HybridFull Time, Internship
Spacial
Spacial: A software building AI-powered platform for design and engineering.
Pursuing a Bachelor's or Master's in CS/Engineering; strong Python, JavaScript, or TypeScript; interest in AI/LLMs; startup environment.
Python, JavaScript, TypeScript
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2w
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Software Engineer Intern (Developer Infrastructure) - 2026 Summer (BS/MS)
San Jose, California, United States
OnsiteIntern
ByteDance
ByteDance: Developing AI-driven content platforms and mobile applications.
Currently pursuing a BS/MS in CS or related field, available for a 12-week summer internship in 2026; experience with Android/Java/Objective-C/Python/Golang and cloud/CI/CD/build/storage systems.
Cloud IDE, Android, Java, Objective-C, Python, Golang, private or public cloud, CI/CD, build infrastructure, DB, MQ, KAFKA, HDFS, Hive, Yarn, K8S, RPC
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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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