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Top Series B SaaS companies

Software-as-a-service vendors selling subscription cloud software to other businesses. Filtered to companies whose latest disclosed round is Series B.

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

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

  1. 1
    Outlier· San Francisco, California, United States
    • Series B
    • 27.7k employees
    • Founded 2023
  2. 2
    Taobao Marketplace
    • Series B
    • 13.7k employees
    • Founded 2003
  3. 3
    Railway· San Francisco, California, United States
    • Series B
    • 10.7k employees
    • Founded 2020
  4. 4
    Cloud Software Group· Fort Lauderdale, Florida, United States
    • Series B
    • 9.5k employees
    • Founded 2008
  5. 5
    Datavant· Phoenix, Arizona, United States
    • Series B
    • 7.1k employees
    • Founded 2017
  6. 6
    Shipt· Birmingham, Alabama, United States
    • Series B
    • 6.5k employees
    • Founded 2014
  7. 7
    Driver· San Francisco, California, United States
    • Series B
    • 6.2k employees
    • Founded 2015
  8. 8
    GitHub· San Francisco, California, United States
    • Series B
    • 6k employees
    • Founded 2008
  9. 9
    Extreme Networks· Morrisville, North Carolina, United States
    • Series B
    • 4k employees
    • Founded 1996
  10. 10
    中腾信金融信息服务(上海)有限公司· China
    • Series B
    • 3.9k employees
    • Founded 2014
  11. 11
    Qihoo 360· China
    • Series B
    • 3k employees
    • Founded 2005
  12. 12
    NETSCOUT· Westford, Massachusetts, United States
    • Series B
    • 2.7k employees
    • Founded 1984
  13. 13
    Supercell· Helsinki, Uusimaa, Finland
    • Series B
    • 2.6k employees
    • Founded 2010
  14. 14
    Pathao· Dhaka, Dhaka, Bangladesh
    • Series B
    • 2.5k employees
    • Founded 2015
  15. 15
    Snoonu· Lusail, Qatar
    • Series B
    • 2k employees
    • Founded 2019
  16. 16
    Shiftsmart· New York, New York, United States
    • Series B
    • 1.9k employees
    • Founded 2015
  17. 17
    BrowserStack· Dublin 12, County Dublin, Ireland
    • Series B
    • 1.8k employees
    • Founded 2011
  18. 18
    Priceline· Norwalk, Connecticut, United States
    • Series B
    • 1.8k employees
    • Founded 1998
  19. 19
    Saviynt· El Segundo, California, United States
    • Series B
    • 1.6k employees
    • Founded 2010
  20. 20
    IGG· Singapore, Singapore
    • Series B
    • 1.5k employees
    • Founded 2006
  21. 21
    DeNA· Shibuya-ku, Tokyo, Japan
    • Series B
    • 1.5k employees
    • Founded 1999
  22. 22
    Transit· Montreal, Quebec, Canada
    • Series B
    • 1.4k employees
    • Founded 2012
  23. 23
    Dajie· Beijing, China
    • Series B
    • 1.4k employees
    • Founded 2008
  24. 24
    Milkbasket· Gurgaon, Haryana, India
    • Series B
    • 1.4k employees
    • Founded 2015
  25. 25
    Eco· San Francisco, California, United States
    • Series B
    • 1.4k employees
    • Founded 2018

Find engineers and founders at Series B SaaS companies

Series B SaaS companies are some of the most active hirers in the market. The list above ranks the largest SaaS companies whose latest disclosed round is Series B, by current headcount, drawn from public LinkedIn and Crunchbase records. Across 2,577matching companies, you’ll find senior engineers, founding designers, and operators worth tracking.

Companies at this stage in SaaS share a profile: a working product, fresh capital, and a hiring plan that wants senior people yesterday. Looking at headcount, last round, and HQ side by side gives you a quick read on where SaaS talent is concentrating right now.

Refolk converts this list into a search. Ask for “Series B SaaS founders hiring senior engineers” or “design leads at Series B SaaS companies” and Refolk returns a fresh ranked shortlist with the sources behind each match.

How this list is built

Refolk pulled SaaS companies 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 5 employees. The list refreshes once a day.

Last refreshed: Thu, 07 May 2026 05:57:27 GMT

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