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Y Combinator Fintech portfolio in San Francisco

The most prolific seed accelerator in the world, batch class twice a year. Filtered to Fintech companies headquartered in San Francisco.

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Built from a search like: “Y Combinator-backed Fintech companies in San Francisco”

Ranked by current headcount across Y Combinator-backed Fintech companies in San Francisco. Refreshed daily.

  1. 1
    Brex· San Francisco, California, United States
    • Debt
    • 1.9k employees
    • Founded 2017
  2. 2
    Flutterwave· San Francisco, California, United States
    • Series E
    • 873 employees
    • Founded 2016
  3. 3
    Human Interest· San Francisco, California, United States
    • Series unknown
    • 831 employees
    • Founded 2015
  4. 4
    Newfront· San Francisco, California, United States
    • Series D
    • 623 employees
    • Founded 2017
  5. 5
    Every· San Francisco, California, United States
    • Series A
    • 438 employees
    • Founded 2021
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Y Combinator-backed Fintech companies in San Francisco

The list above ranks Y Combinator-backed Fintech companies headquartered in San Francisco by current headcount, drawn from public LinkedIn and Crunchbase records. With 89 matching companies in our index, you can see exactly where Y Combinator’s Fintech thesis has landed in San Francisco.

Three filters - investor, industry, city - narrow the field to a tight cluster of operators with overlapping incentives. They share a thesis, a network, and a market. Hiring from this list usually means hiring someone already inside the Y Combinator Fintech world in San Francisco.

Refolk converts this list into a live search. Ask for “Y Combinator Fintech companies in San Franciscohiring senior engineers” or “founders of Y Combinator-backed Fintech companies in San Francisco who left in the last year” and Refolk returns a ranked shortlist.

How this list is built

Refolk pulled Fintech companies headquartered in San Francisco whose disclosed Crunchbase investor list includes Y Combinator, ranked them by current employee count, and kept those with at least 3 employees. The list refreshes once a day.

Last refreshed: Sun, 21 Jun 2026 08:23:43 GMT

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