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Series B SaaS companies in San Francisco

Software-as-a-service vendors selling subscription cloud software to other businesses. Filtered to Series B-stage companies headquartered in San Francisco.

Built from a search like: “Top Series B SaaS companies in San Francisco”

Ranked by current headcount across Series B SaaS companies in San Francisco. Refreshed daily.

  1. 1
    Outlier· San Francisco, California, United States
    • Series B
    • 27.7k employees
    • Founded 2023
  2. 2
    Railway· San Francisco, California, United States
    • Series B
    • 10.7k employees
    • Founded 2020
  3. 3
    Driver· San Francisco, California, United States
    • Series B
    • 6.2k employees
    • Founded 2015
  4. 4
    GitHub· San Francisco, California, United States
    • Series B
    • 6k employees
    • Founded 2008
  5. 5
    Eco· San Francisco, California, United States
    • Series B
    • 1.4k employees
    • Founded 2018
  6. 6
    Constructor· San Francisco, California, United States
    • Series B
    • 1.3k employees
    • Founded 2015
  7. 7
    Factory· San Francisco, California, United States
    • Series B
    • 1.1k employees
    • Founded 2023
  8. 8
    Courier· San Francisco, California, United States
    • Series B
    • 1.1k employees
    • Founded 2019
  9. 9
    Fast· San Francisco, California, United States
    • Series B
    • 1k employees
    • Founded 2019
  10. 10
    Incode· San Francisco, California, United States
    • Series B
    • 628 employees
    • Founded 2015
  11. 11
    11x· San Francisco, California, United States
    • Series B
    • 558 employees
    • Founded 2023
  12. 12
    AngelList· San Francisco, California, United States
    • Series B
    • 528 employees
    • Founded 2010
  13. 13
    Joy· San Francisco, California, United States
    • Series B
    • 483 employees
    • Founded 2016
  14. 14
    Fay Nutrition· San Francisco, California, United States
    • Series B
    • 463 employees
    • Founded 2022
  15. 15
    Nfinite· San Francisco, California, United States
    • Series B
    • 425 employees
    • Founded 2017
  16. 16
    Simetrik· San Francisco, Meta, Colombia
    • Series B
    • 415 employees
    • Founded 2017
  17. 17
    Snappr· San Francisco, California, United States
    • Series B
    • 401 employees
    • Founded 2017
  18. 18
    Nooks· San Francisco, California, United States
    • Series B
    • 373 employees
    • Founded 2020
  19. 19
    Braintrust· San Francisco, California, United States
    • Series B
    • 358 employees
    • Founded 2018
  20. 20
    Proper AI· San Francisco, California, United States
    • Series B
    • 357 employees
    • Founded 2017
  21. 21
    0x· San Francisco, California, United States
    • Series B
    • 347 employees
    • Founded 2016
  22. 22
    Vacatia· San Francisco, California, United States
    • Series B
    • 345 employees
    • Founded 2013
  23. 23
    AnyRoad· San Francisco, California, United States
    • Series B
    • 341 employees
    • Founded 2014
  24. 24
    Clever Inc.· San Francisco, California, United States
    • Series B
    • 340 employees
    • Founded 2012
  25. 25
    Together AI· San Francisco, California, United States
    • Series B
    • 340 employees
    • Founded 2022

Find engineers at Series B SaaS companies in San Francisco

Searching for “engineers at top Series B SaaS companies in San Francisco” surfaces this slice of the market. The list above ranks SaaS companies headquartered in San Francisco whose latest disclosed round is Series B, by current headcount, drawn from public LinkedIn and Crunchbase records. With 283 matching companies in our index, this is a tight read on where the SaaS talent in San Francisco is heating up.

Three filters at once narrows the field hard. The companies that survive all three — Series B, SaaS, in San Francisco — are usually the most targeted recruiting pool a hiring manager can ask for. Senior engineers, founding designers, and product leads here are about to become SaaS’s next operators and angel investors.

Refolk converts this list into a live search. Ask for “senior engineers at Series B SaaS companies in San Francisco hiring” or “founders of Series B SaaS companies in San Francisco who left in the last year” and Refolk returns a ranked shortlist with the evidence behind each match.

How this list is built

Refolk pulled SaaS companies headquartered in San Francisco whose latest disclosed funding round is Series B from public LinkedIn and Crunchbase records, ranked them by current employee count, and kept those with at least 3 employees. The list refreshes once a day.

Last refreshed: Thu, 07 May 2026 05:57:33 GMT

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