List of Companies Using CircleCI
Prospecting companies using CircleCI? Here they are, biggest first, including XOi, Deep Instinct and Fyld. Open a company to see its revenue range, headcount, tech stack and the people to contact.
Company NameIndustryLocationFundingRevenueEmployees
$247M
$100M - $250M
138
$322M
$100M - $250M
137
$1M - $10M
137
$5M
$25M - $50M
137
$50M - $100M
137
$34M
$1M - $10M
137
$50M - $100M
137
$100M - $250M
137
$25M - $50M
137
$238M
$100M - $250M
137
$26M
$100M - $250M
137
$57M
$50M - $100M
137
$50M - $100M
137
$17M
$1M - $10M
137
$50M - $100M
137
$10M - $25M
137
$10M - $25M
136
$100M - $250M
136
$4M
$100M - $250M
136
$100M - $250M
136
$100M - $250M
136
$500M - $1B
136
$50M - $100M
136
$50M - $100M
136
$123M
$25M - $50M
136
$149M
$50M - $100M
136
$60M
$100M - $250M
136
$50M - $100M
136
$100M - $250M
135
$25M - $50M
135
$50M - $100M
135
$21K
$10M - $25M
135
$36M
$1M - $10M
135
$113M
$50M - $100M
135
$10M - $25M
135
$10M - $25M
135
$50M - $100M
135
$10M - $25M
135
$2.2M
$1M - $10M
135
$102M
$100M - $250M
135
$10M - $25M
135
$50M - $100M
135
$250M - $500M
135
$354M
$25M - $50M
134
$10M - $25M
134
$10M - $25M
134
$1M - $10M
134
$28M
$10M - $25M
134
$100M - $250M
134
$100M - $250M
134
$1M - $10M
134
$7.8M
$50M - $100M
134
$50M - $100M
134
$10M - $25M
134
$50M - $100M
133
$25M - $50M
133
$28M
$50M - $100M
133
$10M - $25M
133
$29M
$50M - $100M
133
$65M
$50M - $100M
133
$50M - $100M
133
$41M
$25M - $50M
133
$154M
$100M - $250M
133
$10M - $25M
133
<$1M
133
$1B - $10B
133
$100M - $250M
133
$21M
$25M - $50M
133
$32M
$100M - $250M
133
$1M - $10M
133
$100M - $250M
133
$10M - $25M
132
$70M
$50M - $100M
132
$25M - $50M
132
$57M
$50M - $100M
132
$182M
$50M - $100M
132
$2.3M
$10M - $25M
132
$15M
$250M - $500M
132
$100M - $250M
132
$65M
$25M - $50M
132
$19M
$50M - $100M
132
$6M
$1M - $10M
132
$25M - $50M
132
$10M - $25M
132
$50M - $100M
132
$1M - $10M
132
$71M
$50M - $100M
131
$50M - $100M
131
$25M - $50M
131
$7M
$100M - $250M
131
$100M - $250M
131
$32M
$10M - $25M
131
$50M - $100M
131
$100M - $250M
131
$38M
$1M - $10M
131
$500M - $1B
131
$37M
$100M - $250M
131
$23M
$1M - $10M
130
$50M - $100M
130
$240M
$100M - $250M
130
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 XOi, Deep Instinct and Fyld.
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
Top companies in United States by employee countTop companies in United Kingdom by employee countTop companies in Canada by employee countTop companies in Germany by employee countTop companies in France by employee countTop companies in Australia by employee countTop companies in Netherlands by employee countTop companies in India by employee countTop companies in Spain by employee countTop companies in Switzerland by employee countTop companies in Sweden by employee countTop companies in Italy by employee countTop companies in Denmark by employee countTop companies in Brazil by employee countTop companies in Ireland by employee count
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