Refolk
Sign in

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.

Edit the query above, or pick a refinement. 100 free credits on sign-up, no card needed.

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
    Instagram
    • Series B
    • 53.3k employees
    • Founded 2010
  2. 2
    Railway· San Francisco, California, United States
    • Series B
    • 11k employees
    • Founded 2020
  3. 3
    Datavant· New York, New York, United States
    • Series B
    • 7.1k employees
    • Founded 2014
  4. 4
    Shipt· Birmingham, Alabama, United States
    • Series B
    • 6.5k employees
    • Founded 2014
  5. 5
    GitHub· San Francisco, California, United States
    • Series B
    • 6.4k employees
    • Founded 2008
Reveal 1,710 more·100 free credits, no card

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 1,715matching 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: Sun, 21 Jun 2026 08:18:41 GMT

Need an even more specific search?

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

Related lists

See all company lists.

Or zoom out

Slice this list a different way