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Role description

Software Engineer, Intern

Exa logoExaYC S21
AI-native
TypeFull-time
WorkplaceOn-site
SeniorityIntern
Salary$100,000–$200,000
LocationSan Francisco, CA
Posted8/28/2026
Engineering

Exa is an applied AI lab building a search engine unlike the world has ever seen. We build massive-scale infra to crawl the entire web, train state-of-the-art embedding models to process it, and design super high performant vector databases to retrieve over it. We now power search for Cursor, Cognition, HubSpot, and over 400,000 developers and have raised $350m from Lightspeed, Benchmark, and a16z.

Our ultimate goal is to build perfect search over all the world's information, far beyond Google. If you want to build massive-scale ML systems that will define the way the new AI world consumes information, this is the place for you.

As an engineering intern, you'd play a critical role in lots of our projects. We're pretty flexible on what projects people work on based on their skills and interests.

Who You Are

  • Currently pursuing a degree in Computer Science, Engineering, Physics, or a related technical field AND are willing to take off a semester to work full time in SF. Remote and part-time interns are not accepted.

  • You have experience with some high performance language (C++, Rust, etc.)

  • You often code technically difficult or interesting projects for fun

  • You care about the problem of finding high quality information and recognize how important this is for the world

What You Could Do

  • Recreate Google-level keyword search over 10 billion pages in 1 month

  • Build a state-of-the-art crawling system that works optimally for any website

  • Build a custom vector database that runs over a billion vectors in under 100ms

This is an in-person opportunity in San Francisco. We're happy to sponsor international candidates (e.g., STEM OPT, OPT, H1B, O1, E3).

Exa is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, creed, color, religion, sex, sexual orientation, gender identity or expression, national origin, disability, age, veteran status, marital status, pregnancy or related conditions, criminal histories consistent with applicable law, or any other basis protected by applicable law.

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Company info

Exa logo

Exa

We're an AI research lab building a search engine for the future.

Exa is an applied AI research lab organizing human knowledge, starting with the web. Exa Search is the highest quality search API at every latency. It accepts natural language queries and produces token-efficient results with citations. Exa Agent is a high-compute web agent that synthesizes information from across the web to handle the most complex deep research, list-building, and enrichment workflows. These products power Cursor, Cognition, Hubspot, OpenRouter, Monday.com, and agents built by over 400,000 developers. We are a worldwide team of engineers and researchers. We're hiring: exa.ai/careers

Private companySeries BYC S21
HQSan Francisco, United States
Size165 employees
Unlock human wisdom
ThesisTermsPrivacy
Industry
Software Development
Funding
  • Series B · $85M · Sep 3, 2025
Investors
Benchmark

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