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Companies funded by Founders Fund

Contrarian venture firm investing in deeptech, defence, and breakthrough software.

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Ranked by current headcount across companies in Founders Fund's disclosed portfolio. Refreshed monthly.

  1. 1
    Compass· New York, New York, United States

    Compass is a real estate technology company with a powerful end-to-end platform that supports the entire buying and selling workflow. We deliver an incomparable experience to both agents and their clients all in service of the Compass mission: to help everyone find their place in the world. Founded in 2012 by Ori Allon and Robert Reffkin, Compass operates in 22+ regions across the United States including New York, Los Angeles and Orange County, Chicago, San Francisco, Boston, Washington D.C., South Florida, The Hamptons, Santa Barbara & Montecito, San Diego, Seattle & Eastside, Philadelphia, Connecticut, Westchester, Aspen, Boulder, Denver, Atlanta, Austin & Central Texas, Dallas-Fort Worth, Houston, Nashville, and Lake Tahoe. Learn more and find your place at www.compass.com and www.compass.com/careers.Compass only reaches out to applicants from a @compass.com domain and does not prompt applicants to download software or files as part of its application process.

    • Post-IPO debt
    • 35.4k employees
    • Founded 2012
  2. 2
    SpaceX· Hawthorne, California, United States

    SpaceX designs, manufactures and launches the world’s most advanced rockets and spacecraft. The company was founded in 2002 by Elon Musk to revolutionize space transportation, with the ultimate goal of making life multiplanetary. SpaceX has gained worldwide attention for a series of historic milestones. It is the only private company ever to return a spacecraft from low-Earth orbit, which it first accomplished in December 2010. The company made history again in May 2012 when its Dragon spacecraft attached to the International Space Station, exchanged cargo payloads, and returned safely to Earth — a technically challenging feat previously accomplished only by governments. Since then Dragon has delivered cargo to and from the space station multiple times, providing regular cargo resupply missions for NASA.For more information, visit www.spacex.com.

    • Post-IPO debt
    • 20.8k employees
    • Founded 2002
  3. 3
    Stripe· South San Francisco, California, United States

    Stripe builds programmable financial services. Millions of companies—from the world’s largest enterprises to the most ambitious startups—use Stripe to accept payments, grow their revenue, and accelerate new business opportunities. Headquartered in San Francisco and Dublin, the company aims to increase the GDP of the internet.

    • Secondary
    • 17.1k employees
    • Founded 2010
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  5. 4
    Nubank· São Paulo, São Paulo, Brazil

    Nu is one of the largest digital financial services platforms in the world, serving 135 million customers across Brazil, Mexico, and Colombia. The company has been leading an industry transformation by leveraging data and proprietary technology to develop innovative products and services.Guided by its mission to fight complexity and empower people, Nu caters to customers’ complete financial journey, promoting financial access and advancement with responsible lending and transparency. The company is powered by an efficient and scalable business model that combines low cost to serve with growing returns.https://www.youtube.com/watch?v=kwwzcXK2PUo

    • Post-IPO debt
    • 12.7k employees
    • Founded 2013
  6. 5
    OpenAI· San Francisco, California, United States

    OpenAI is an AI research and deployment company dedicated to ensuring that general-purpose artificial intelligence benefits all of humanity. AI is an extremely powerful tool that must be created with safety and human needs at its core. OpenAI is dedicated to putting that alignment of interests first — ahead of profit.To achieve our mission, we must encompass and value the many different perspectives, voices, and experiences that form the full spectrum of humanity. Our investment in diversity, equity, and inclusion is ongoing, executed through a wide range of initiatives, and championed and supported by leadership.At OpenAI, we believe artificial intelligence has the potential to help people solve immense global challenges, and we want the upside of AI to be widely shared. Join us in shaping the future of technology.

    • Series unknown
    • 10.5k employees
    • Founded 2015

Find engineers and founders in Founders Fund’s portfolio

Founders Fund’s portfolio is a curated bet on the next wave of category-defining companies. The list above ranks Founders Fund-backed companies by current headcount, drawn from public LinkedIn and Crunchbase records. With 502 matching companies in Refolk’s index, the depth of senior engineers, founders, and operators is significant.

Founders Fund’s companies tend to share a profile - strong technical founders, fresh capital, and access to the Founders Fund network. Hiring from these companies often means hiring from one of the most curated talent pools in tech.

Refolk turns this list into a search. Ask for Founders Fund portfolio companies hiring senior ML engineers” or “founders of Founders Fund-backed companies who left in the last year” and Refolk returns a fresh ranked shortlist.

How this list is built

Refolk pulled companies whose disclosed Crunchbase investor list includes Founders Fund, ranked them by current employee count, and kept those with at least 5 employees. The list refreshes monthly.

Last refreshed: Sun, 13 Sep 2026 19:03:04 GMT

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Common questions

How is this ranking built?

The list draws on the public company graph - headcount and growth signals, funding history, and recency. The criteria chips at the top show exactly which filters produced it, and the methodology section explains the ranking.

How fresh is the data?

The underlying index updates continuously and this ranking is rebuilt monthly. Last refreshed: Sun, 13 Sep 2026 19:03:04 GMT. For a list built against the index as it stands today, sign up and run the search live.

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