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Top Series B Developer tools companies

IDEs, runtimes, frameworks, and platforms built primarily for engineers. Filtered to companies whose latest disclosed round is Series B.

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

Ranked by current headcount across Series B Developer tools companies. Refreshed daily.

  1. 1
    Railway· San Francisco, California, United States
    • Series B
    • 10.7k employees
    • Founded 2020
  2. 2
    Cloud Software Group· Fort Lauderdale, Florida, United States
    • Series B
    • 9.5k employees
    • Founded 2008
  3. 3
    Datavant· Phoenix, Arizona, United States
    • Series B
    • 7.1k employees
    • Founded 2017
  4. 4
    Shipt· Birmingham, Alabama, United States
    • Series B
    • 6.5k employees
    • Founded 2014
  5. 5
    GitHub· San Francisco, California, United States
    • Series B
    • 6k employees
    • Founded 2008
  6. 6
    Extreme Networks· Morrisville, North Carolina, United States
    • Series B
    • 4k employees
    • Founded 1996
  7. 7
    NETSCOUT· Westford, Massachusetts, United States
    • Series B
    • 2.7k employees
    • Founded 1984
  8. 8
    Supercell· Helsinki, Uusimaa, Finland
    • Series B
    • 2.6k employees
    • Founded 2010
  9. 9
    Pathao· Dhaka, Dhaka, Bangladesh
    • Series B
    • 2.5k employees
    • Founded 2015
  10. 10
    Snoonu· Lusail, Qatar
    • Series B
    • 2k employees
    • Founded 2019
  11. 11
    BrowserStack· Dublin 12, County Dublin, Ireland
    • Series B
    • 1.8k employees
    • Founded 2011
  12. 12
    Saviynt· El Segundo, California, United States
    • Series B
    • 1.6k employees
    • Founded 2010
  13. 13
    IGG· Singapore, Singapore
    • Series B
    • 1.5k employees
    • Founded 2006
  14. 14
    DeNA· Shibuya-ku, Tokyo, Japan
    • Series B
    • 1.5k employees
    • Founded 1999
  15. 15
    Transit· Montreal, Quebec, Canada
    • Series B
    • 1.4k employees
    • Founded 2012
  16. 16
    Wrike· San Diego, California, United States
    • Series B
    • 1.3k employees
    • Founded 2006
  17. 17
    Constructor· San Francisco, California, United States
    • Series B
    • 1.3k employees
    • Founded 2015
  18. 18
    Gupy· São Paulo, São Paulo, Brazil
    • Series B
    • 1.2k employees
    • Founded 2015
  19. 19
    Factory· San Francisco, California, United States
    • Series B
    • 1.1k employees
    • Founded 2023
  20. 20
    Mendix· Boston, Massachusetts, United States
    • Series B
    • 1.1k employees
    • Founded 2005
  21. 21
    Mygate· Bengaluru, Karnataka, India
    • Series B
    • 1k employees
    • Founded 2016
  22. 22
    AuditBoard· Cerritos, California, United States
    • Series B
    • 1k employees
    • Founded 2014
  23. 23
    Sonar· Vernier, Geneva, Switzerland
    • Series B
    • 914 employees
    • Founded 2008
  24. 24
    FunPlus· Zug, Zug, Switzerland
    • Series B
    • 871 employees
    • Founded 2010
  25. 25
    Testlio· Remote, Oregon, United States
    • Series B
    • 859 employees
    • Founded 2012

Find engineers and founders at Series B Developer tools companies

Series B Developer tools companies are some of the most active hirers in the market. The list above ranks the largest Developer tools companies whose latest disclosed round is Series B, by current headcount, drawn from public LinkedIn and Crunchbase records. Across 1,667matching companies, you’ll find senior engineers, founding designers, and operators worth tracking.

Companies at this stage in Developer tools 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 Developer tools talent is concentrating right now.

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

How this list is built

Refolk pulled Developer tools 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 05:55:58 GMT

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