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Series B Developer tools companies in San Francisco

IDEs, runtimes, frameworks, and platforms built primarily for engineers. Filtered to Series B-stage companies headquartered in San Francisco.

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

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

  1. 1
    Railway· San Francisco, California, United States
    • Series B
    • 11k employees
    • Founded 2020
  2. 2
    GitHub· San Francisco, California, United States
    • Series B
    • 6.4k employees
    • Founded 2008
  3. 3
    Constructor· San Francisco, California, United States
    • Series B
    • 1.3k employees
    • Founded 2015
  4. 4
    Factory· San Francisco, California, United States
    • Series B
    • 1.3k employees
    • Founded 2023
  5. 5
    Incode· San Francisco, California, United States
    • Series B
    • 665 employees
    • Founded 2015
Reveal 219 more·100 free credits, no card

Find engineers at Series B Developer tools companies in San Francisco

Searching for “engineers at top Series B Developer tools companies in San Francisco” surfaces this slice of the market. The list above ranks Developer tools companies headquartered in San Francisco whose latest disclosed round is Series B, by current headcount, drawn from public LinkedIn and Crunchbase records. With 224 matching companies in our index, this is a tight read on where the Developer tools talent in San Francisco is heating up.

Three filters at once narrows the field hard. The companies that survive all three - Series B, Developer tools, 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 Developer tools’s next operators and angel investors.

Refolk converts this list into a live search. Ask for “senior engineers at Series B Developer tools companies in San Francisco hiring” or “founders of Series B Developer tools 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 Developer tools 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: Sun, 21 Jun 2026 11:26:04 GMT

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