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.
- StageSeries A
- HQBoston
- Matches187
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
- 6.3k 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
- 588 employees
- Founded 2015
- 4Continuum· Boston, Massachusetts, United States
- Series A
- 527 employees
- Founded 1983
- 5Ataccama· Boston, Massachusetts, United States
- Series A
- 501 employees
- Founded 2007
- 6Laravel· Benton, Arkansas, United States
- Series A
- 333 employees
- Founded 2011
- 7C Space· Boston, Massachusetts, United States
- Series A
- 295 employees
- Founded 1999
- 8Blink - Employee Experience Platform· Boston, Massachusetts, United States
- Series A
- 263 employees
- Founded 2015
- 9Burns & Levinson LLP· Boston, Massachusetts, United States
- Series A
- 262 employees
- Founded 1960
- 10ThirdChannel· Boston, Massachusetts, United States
- Series A
- 253 employees
- Founded 2012
- 11Goldcast· Boston, Massachusetts, United States
- Series A
- 208 employees
- Founded 2020
- 12Slang· Boston, Massachusetts, United States
- Series A
- 171 employees
- Founded 2013
- 13Nift· Boston, Massachusetts, United States
- Series A
- 170 employees
- Founded 2014
- 14SOS Group, Inc.· Boston, Massachusetts, United States
- Series A
- 170 employees
- Founded 2017
- 15Rue La La· Boston, Massachusetts, United States
- Series A
- 160 employees
- Founded 2008
- 16Spines· Boynton Beach, Florida, United States
- Series A
- 154 employees
- Founded 2021
- 17Creative Force· Boston, Massachusetts, United States
- Series A
- 147 employees
- Founded 2019
- 18Movista· Bentonville, Arkansas, United States
- Series A
- 140 employees
- Founded 2010
- 19Nuqleous· Bentonville, Arkansas, United States
- Series A
- 136 employees
- Founded 2013
- 20Agency· Boston, Massachusetts, United States
- Series A
- 135 employees
- Founded 2023
- 21Connie Health· Boston, Massachusetts, United States
- Series A
- 125 employees
- Founded 2019
- 22Venti· Boston, Massachusetts, United States
- Series A
- 124 employees
- Founded 2018
- 23AceUp· Boston, Massachusetts, United States
- Series A
- 120 employees
- Founded 2016
- 24SV Health Investors· Boston, Massachusetts, United States
- Series A
- 119 employees
- Founded 1993
- 25Family First· Boston, Massachusetts, United States
- Series A
- 117 employees
- Founded 2016
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 187 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.
How this list is built
Last refreshed: Thu, 07 May 2026 07:48:18 GMT
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