List of Companies Using CircleCI
Prospecting companies using CircleCI? Here they are, biggest first, including Tomahawk, Tonsser and Tronic. Open a company to see its revenue range, headcount, tech stack and the people to contact.
Company NameIndustryLocationFundingRevenueEmployees
$2.4M
$1M - $10M
38
$11M
<$1M
38
$10M - $25M
38
$1.2M
$25M - $50M
38
$53M
$10M - $25M
38
$57M
$50M - $100M
38
$1M - $10M
37
$2M
$25M - $50M
37
$10M - $25M
37
$10M - $25M
37
$1M - $10M
37
$1M - $10M
37
$25M - $50M
37
$25M - $50M
37
$25M - $50M
37
$11M
$10M - $25M
37
$25M - $50M
37
$25M - $50M
37
$6.5M
$100M - $250M
37
$1M - $10M
37
$47M
$25M - $50M
37
$10M - $25M
37
$25M - $50M
37
$9.3M
$10M - $25M
37
$25M - $50M
37
$1.4M
$1M - $10M
37
$1M - $10M
37
$10M - $25M
37
$1B - $10B
37
$1M - $10M
37
$1M - $10M
37
$1M - $10M
37
$25M - $50M
37
$25M - $50M
37
$1M - $10M
37
$27M
$25M - $50M
37
$25M - $50M
37
$25M - $50M
37
$10M - $25M
37
$25M - $50M
37
$10M - $25M
37
$25M - $50M
37
$25M - $50M
37
$100M - $250M
37
$380K
$1M - $10M
37
$1M
$1M - $10M
37
$1M - $10M
37
$1M - $10M
36
$30M
$25M - $50M
36
$11M
$25M - $50M
36
$250M - $500M
36
$19M
$25M - $50M
36
$124M
<$1M
36
$25M - $50M
36
$15M
$1M - $10M
36
$10M - $25M
36
$1M - $10M
36
<$1M
36
$16M
<$1M
36
$10M - $25M
36
$25M - $50M
36
$1M - $10M
36
$230M
$1M - $10M
36
$25M - $50M
36
$1M - $10M
36
$10M - $25M
36
$1M - $10M
36
$10M
$10M - $25M
36
$64M
$1M - $10M
36
$1M - $10M
36
$27M
$25M - $50M
36
$107M
$25M - $50M
36
$4.8M
$10M - $25M
36
$1M - $10M
36
$1M - $10M
36
$25M - $50M
36
$49K
<$1M
36
$4.6M
$10M - $25M
36
$25M - $50M
36
$1M - $10M
36
$72M
$25M - $50M
36
$10M - $25M
36
$154M
$25M - $50M
35
$1M - $10M
35
$1M - $10M
35
$1M - $10M
35
$2.8M
$1M - $10M
35
$25M - $50M
35
$50M - $100M
35
$300K
$50M - $100M
35
$10M - $25M
35
<$1M
35
$60M
$25M - $50M
35
$118M
$10M - $25M
35
$10M - $25M
35
$1M - $10M
35
$10M - $25M
35
$25M - $50M
35
$1.6B
$10M - $25M
35
$1M - $10M
35
About companies using CircleCI
Why target companies using CircleCI?
CircleCI is a DevOps & observability technology. These are the tools engineering teams build, ship and monitor with, and their users are buyers of developer tools, infrastructure and services. Companies on the list include Tomahawk, Tonsser and Tronic.
Which industries use CircleCI the most?
Among companies using CircleCI on LeadIQ, the most common industries are Software Development, IT Services and IT Consulting, Financial Services, Technology, Information and Internet, Insurance and Hospitals and Health Care. Narrow your list to the industry you sell into from there.
Where are companies using CircleCI located?
Companies using CircleCI are most often headquartered in the United States, the United Kingdom, Canada, France, India and Germany.
What other DevOps & observability technologies do companies use?
Prospecting the wider DevOps & observability space? Related technologies with their own company lists include GitHub, New Relic, Docker and Kubernetes.
How do I reach decision makers at companies using CircleCI?
Open a company to see its employee directory and email format, then use LeadIQ to get verified work emails and phone numbers for the people you want to reach and push them straight to your CRM or sequencer.
Insights based on LeadIQ data refreshed in September 2026.
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Top companies by employee count
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