CircleCI
CI/CD at AI speed. Validate code autonomously. Ship confidently.
359 employees · est. 2011 · San Francisco, United States
SafeStack
Application security training for every stage of your SDLC • Get started for free at safestack.io 💜
12 employees · est. 2014 · Auckland, New Zealand
CircleCI is the older company (2011 vs 2014); CircleCI is the larger of the two.
Side-by-Side Comparison
| Metric | CircleCI | SafeStack |
|---|---|---|
| Founded | ||
| Founded | 2011 older | 2014 |
| Headquarters | ||
| Headquarters | San Francisco, United States | Auckland, New Zealand |
| Employees | ||
| Employees | 359 larger | 12 |
| Industry | ||
| Industry | Developer Tools, Productivity, SaaS | Cyber Security, Developer Tools, EdTech |
| Funding Stage | ||
| Funding Stage | Series F | Seed |
| Total Funding | ||
| Total Funding | $315.00M | $6.35M |
| Funding Rounds | ||
| Funding Rounds | 9 | 3 |
| Services | ||
| Services | Not tracked yet | Not tracked yet |
| Target Customers | ||
| Target Customers | Not tracked yet | Not tracked yet |
| Taxonomy | ||
| Taxonomy | Software Delivery, Continuous Integration, Continuous Delivery, CI/CD Platform, Speed Of Delivery, Equal Opportunity, Affirmative Action, Diversity, Inclusivity, Innovation, Growth | Application Security, Training Platform, Secure Development, Cybersecurity Culture, SDLC, Secure Coding, Software Development, Online Training, Data Security, Assessments, Industry Experts, Empowerment, Continuous Education |
| Website | ||
| Website | circleci.com | safestack.io |
About CircleCI
CircleCI is a software delivery platform founded in 2011 in the United States. It offers a Continuous Integration and Continuous Delivery (CI/CD) platform, catering to the needs of software development teams aiming to accelerate their delivery processes. The company received a substantial $100.00M S...
About SafeStack
SafeStack is a New Zealand-based startup disrupting the Cyber Security, Developer Tools, and Education industries with its community-centric online training platform. Founded in 2014, the company has garnered significant attention and recently secured a NZD4.00MSeed Round investment on 05 December 2...
We will tell you when either one moves
BounceWatch watches CircleCI and SafeStack for new funding, fast hiring, new executives and a change of software vendor. When one happens, we email you the same day.
Funding, hiring, leadership and stack changes at CircleCI and SafeStack — by email.
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Compiled from the BounceWatch company index. We last looked at CircleCI on 8 Sep 2025, and SafeStack on 12 Sep 2024. Where a field is blank here, it means we have not recorded it — not that the answer is zero. How we source and date this.