Top Series A companies in Boston
Companies that have closed a Series A - product-market fit confirmed and scaling. Filtered to companies headquartered in Boston.
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- StageSeries A
- HQBoston
- Matches204
Built from a search like: “Top Series A companies in Boston”
Ranked by current headcount across Series A companies headquartered in Boston. Refreshed daily.
- 1Temu· Boston, Massachusetts, United States
- Series A
- 7.4k employees
- Founded 2022
- 2University of Massachusetts· Boston, Massachusetts, United States
- Series A
- 3.5k employees
- Founded 2020
- 3Mentor Collective· New Boston, Massachusetts, United States
- Series A
- 531 employees
- Founded 2015
- 4Continuum· Boston, Massachusetts, United States
- Series A
- 530 employees
- Founded 1983
- 5Ataccama· Boston, Massachusetts, United States
- Series A
- 466 employees
- Founded 2007
Find engineers at Series A companies in Boston
Series A companies in Boston are some of the fastest-moving employers in the market. The list above ranks the largest Series A-stage companies headquartered in Boston by current headcount, drawn from public LinkedIn and Crunchbase records. With 204 matching companies in our index, the density of senior engineers, designers, and founders is unusually high.
At Series A, teams tend to be small, ambitious, and on the hunt for senior talent. The companies on this list are good signals for where the Bostontalent market is heating up - and for which engineers and founders are about to become tomorrow’s operators.
Refolk converts this list into a live search. Ask for “founders of Series A companies in Boston” or “senior engineers at Series A companies in Boston hiring” and Refolk returns a ranked shortlist with evidence behind each match.
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Last refreshed: Sun, 21 Jun 2026 09:36:55 GMT
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