Companies using CircleCI
We found 19,701 companies that use CircleCI. 10,622 of them name it in their own job posts, and the rest through employees' public profiles. Hiring for it has slowed, though 8,471 job posts still named it from October 2025 to August 2026. Engineering teams are its most common home.
Data as of November 9, 2026 · Markdown version
Which companies name CircleCI in the most job posts?
What else do we know about CircleCI?
Is hiring for CircleCI growing?
Show the data
| Month | Job posts naming CircleCI | All job posts | Per 10,000 |
|---|---|---|---|
| Oct 2025 | 828 | 1,413,673 | 5.9 |
| Nov 2025 | 1,045 | 1,822,119 | 5.7 |
| Dec 2025 | 713 | 1,236,103 | 5.8 |
| Jan 2026 | 972 | 1,828,002 | 5.3 |
| Feb 2026 | 903 | 1,856,647 | 4.9 |
| Mar 2026 | 798 | 1,850,711 | 4.3 |
| Apr 2026 | 766 | 1,728,886 | 4.4 |
| May 2026 | 668 | 1,821,509 | 3.7 |
| Jun 2026 | 661 | 1,909,496 | 3.5 |
| Jul 2026 | 561 | 1,815,180 | 3.1 |
| Aug 2026 | 556 | 1,835,698 | 3.0 |
How many companies named CircleCI in a job post for the first time in recent months?
Companies whose first job post naming it appeared in that period. Recruiters, staffing firms and job boards are left out.
How do we know which companies use CircleCI?
19,701 companies. Each is counted once, under the strongest evidence we have for it.
What size are the companies that use CircleCI?
Share of its companies Typical tech page
Where are CircleCI companies based?
Companies in 138 countries and territories. Shares are of companies with a known headquarters country.
Show the data
| Country | Companies | Share | Typical tech page |
|---|---|---|---|
| United States | 7,959 | 44% | 43% |
| United Kingdom | 1,461 | 8% | 6.4% |
| India | 1,248 | 6.8% | 6.9% |
| Canada | 688 | 3.8% | 3.6% |
| France | 624 | 3.4% | 4.6% |
| Germany | 611 | 3.3% | 4.4% |
Which teams work with CircleCI?
What else do CircleCI companies use?
Share of the 8,054 CircleCI companies counted here whose job posts also name the tool Typical for companies the same size
Which companies started naming CircleCI in job posts recently?
Companies that named CircleCI in a job post for the first time between April and August 2026, ranked by their job posts in those months. AI-native companies get a group of their own, whatever their size. Recruiters and job boards are left out.
Which roles mention CircleCI most?
Show the data
| Role | Share | Oct 2025 to Aug 2026 | Mar to May 2026 | Jun to Aug 2026 |
|---|---|---|---|---|
| Software Engineer | 26% | 2,183 | 542 | 395 |
| DevOps Engineer | 17% | 1,435 | 370 | 306 |
| Software Development Engineer in Test | 8.3% | 705 | 172 | 164 |
| Mobile Developer | 4.5% | 382 | 115 | 59 |
| Site Reliability Engineer | 4.1% | 351 | 96 | 73 |
| Platform Engineer | 3.1% | 265 | 68 | 63 |
Which project themes come up in CircleCI job posts?
About this data
Sumble built this page. Sumble gives sales, marketing and other GTM teams technographics and hiring signals for the companies they sell to: the technologies each company uses, which teams are hiring and for what, and who reports to whom. That helps a team know who to contact, why now, and what to say.
Sumble covers more than 3.6 million companies, 93 million job posts collected since 2022 and 194 million employee profiles, and tracks more than 37,000 technologies. It finds which technologies a company uses by reading its job posts and its employees' public profiles.
Sumble has a free plan, and the same data is available through its API and MCP server.
A company counts when its own job posts or its employees' public profiles name the technology. Hiring is that technology's share of all job posts collected each month. Quotes are copied word for word from the companies' job posts.
Every figure on this page comes from Sumble's own analysis, and you won't find it outside Sumble.