List of Companies Using CircleCI
Prospecting companies using CircleCI? Here they are, biggest first, including ToolsGroup, Ultimo and immowelt. Open a company to see its revenue range, headcount, tech stack and the people to contact.
Company NameIndustryLocationFundingRevenueEmployees
$250M - $500M
319
$25M - $50M
319
$25M - $50M
319
$1B - $10B
318
$250M - $500M
318
$25M - $50M
318
$100M - $250M
318
$250M - $500M
318
$100M - $250M
317
$100M - $250M
317
$25M - $50M
317
$250M - $500M
317
$25M - $50M
317
<$1M
317
$1B - $10B
317
$417M
$100M - $250M
317
$25M - $50M
317
$50M - $100M
316
$250M - $500M
316
$10M - $25M
316
$1M - $10M
316
$25M - $50M
316
$250M - $500M
316
$106M
$1B - $10B
316
$105M
$1B - $10B
315
$22M
$1M - $10M
315
$10M - $25M
315
$250M - $500M
315
$264M
$250M - $500M
315
$25M - $50M
315
$78M
$100M - $250M
315
$100M - $250M
314
$10M - $25M
314
$23M
$25M - $50M
314
$10M - $25M
314
$94M
$250M - $500M
313
$250M - $500M
313
$1.4M
$100M - $250M
313
$100M - $250M
312
$10M - $25M
312
$10M - $25M
312
$100M - $250M
312
$50M - $100M
312
$50M - $100M
312
$25M - $50M
312
$50M - $100M
312
$10M - $25M
311
$100M - $250M
311
$50M - $100M
311
$250M - $500M
311
$322M
$100M - $250M
310
$250M - $500M
310
$14M
$10M - $25M
310
$80M
$250M - $500M
310
$25M - $50M
309
$64M
$100M - $250M
309
$100M - $250M
309
$84M
$500M - $1B
309
$250M - $500M
309
$120M
$100M - $250M
309
$25M - $50M
309
$250M - $500M
309
$292M
$10M - $25M
308
$118M
$25M - $50M
308
$25M - $50M
308
$20M
$1M - $10M
308
$100M - $250M
308
$241M
$100M - $250M
307
$250M - $500M
307
$25M - $50M
307
$10M - $25M
307
$86M
$25M - $50M
306
$50M - $100M
306
$5.8M
$50M - $100M
306
$250M - $500M
305
$864M
$10B+
305
$109M
$100M - $250M
305
$10M - $25M
305
$500M - $1B
305
$250M - $500M
305
$10B+
305
$81M
$250M - $500M
305
$10M - $25M
304
$10M - $25M
304
$100M - $250M
304
$15M
$25M - $50M
304
$1M - $10M
304
$118M
$250M - $500M
304
$250M - $500M
304
$523M
$100M - $250M
303
$250M - $500M
303
$10M - $25M
303
$1M - $10M
303
$25M - $50M
302
$100M - $250M
302
$100M
$25M - $50M
302
$84M
$250M - $500M
302
$10M - $25M
302
$149M
$100M - $250M
302
$100M - $250M
301
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 ToolsGroup, Ultimo and immowelt.
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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