Refolk

Founders Fund portfolio in San Francisco

Contrarian venture firm investing in deeptech, defence, and breakthrough software. Filtered to companies headquartered in San Francisco.

Built from a search like: Founders Fund-backed companies in San Francisco

Ranked by current headcount across Founders Fund-backed companies in San Francisco. Refreshed daily.

  1. 1
    Airbnb· San Francisco, California, United States

    Airbnb was born in 2007 when two hosts welcomed three guests to their San Francisco home, and has since grown to over 5 million hosts who have welcomed over 2 billion guest arrivals in almost every country across the globe. Every day, hosts offer unique stays, experiences and services that make it possible for guests to connect with communities in a more authentic way.

    • Post-IPO debt
    • 72.2k employees
    • Founded 2007
  2. 2
    Lyft· San Francisco, California, United States

    Whether it’s an everyday commute or a journey that changes everything, Lyft is driven by our purpose: to serve and connect. In 2012, Lyft was founded as one of the first ridesharing communities in the United States. Now, millions of drivers have chosen to earn on billions of rides. Lyft offers rideshare, bikes, and scooters all in one app — for a more connected world, with transportation for everyone.

    • Post-IPO debt
    • 28.5k employees
    • Founded 2012
  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
    • 17k employees
    • Founded 2010
  4. Live search

    This list is a starting point

    I can run a natural-language search across LinkedIn, GitHub, and the open web. Fire one of these, or edit the box up top to match exactly who you're after.

    500 free credits on sign-up, no card needed.

  5. 4
    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
  6. 5
    Twilio· San Francisco, California, United States

    Today's leading companies trust Twilio's Customer Engagement Platform (CEP) to build direct, personalized relationships with their customers everywhere in the world. Twilio enables companies to use communications and data to add intelligence and security to every step of the customer journey, from sales to marketing to growth, customer service and many more engagement use cases in a flexible, programmatic way. Across 180 countries, millions of developers and hundreds of thousands of businesses use Twilio to create magical experiences for their customers.

    • Post-IPO equity
    • 7.8k employees
    • Founded 2008

Founders Fund portfolio companies in San Francisco

Founders Fund’s San Francisco portfolio is one of the most active recruiting pools in the market. The list above ranks Founders Fund-backed companies headquartered in San Francisco by current headcount, drawn from public LinkedIn and Crunchbase records. With 138 matching companies in Refolk’s index, you can see exactly where the Founders Fund thesis has landed locally.

Founders Fund companies in San Francisco tend to attract a specific type of operator - a founder or early hire bought into both the firm’s thesis and the city’s ecosystem. That makes the engineers and designers at these companies particularly valuable signals.

Refolk lets you reach this pool. Ask for Founders Fund companies in San Francisco hiring founding engineers” or “founders of Founders Fund-backed companies in San Francisco who left in the last year” and Refolk returns a ranked shortlist with evidence behind each match.

How this list is built

Refolk pulled companies whose disclosed Crunchbase investor list includes Founders Fund and whose HQ is in San Francisco, ranked them by current employee count, and kept those with at least 5 employees. The list refreshes once a day.

Last refreshed: Wed, 05 Aug 2026 14:21:06 GMT

Search this list

Need a more specific search?

Refolk runs natural-language searches across LinkedIn, GitHub, and the open web. Try one of these:

500 free credits on sign-up, no card needed.

Related lists

See all company lists.

Or zoom out

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 page re-renders at least daily. Last refreshed: Wed, 05 Aug 2026 14:21:06 GMT.

Can I get the full list of 138 companies?

Yes. This page shows the top of the ranking; sign up and I'll run the search live for the complete, current list. You start with 500 free credits, no card required.

Can I find the people inside these companies?

Yes. Ask in plain English - for example "engineering leaders at these companies who joined in the last year" - and I return the specific people, with context on each.

Try it on your own search

Stop building boolean strings. Just describe the person.

Type one sentence and I plan the search, read GitHub, public LinkedIn and Crunchbase records, and the open web live, then hand back a ranked shortlist with the reasoning behind every name. No filters to learn, no export to clean up, no sales call to sit through.

  • One sentence in, a ranked shortlist out. No boolean, no filters, no seat to buy.
  • Read live at search time, not from a database that went stale last quarter.
  • Watch every step as it runs, and see why each name made the list.

500 free credits on sign-up. No card, no demo call. See real searches.

Keep exploring