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CircleCI Reviews

San Francisco, California

4.0/ 5

1 review

CircleCI, legally incorporated as Circle Internet Services, Inc., is a prominent software development technology company that provides a cloud-based and self-hosted Continuous Integration and Continuous Delivery (CI/CD) platform. Founded in September 2011 by Paul Biggar and Allen Rohner, the company is headquartered in San Francisco, California, and maintains a globally distributed workforce alongside domestic and international offices in locations such as Denver, Boston, London, and Tokyo. The primary mission of the organization is to streamline the software development lifecycle by automating the critical processes of building, testing, and deploying code, enabling engineering teams to ship high-quality software faster and with greater reliability. The platform functions by monitoring version control repositories—including GitHub, GitHub Enterprise, and Atlassian Bitbucket—and automatically triggering automated workflows for every new code commit. It runs tests across diverse environments, such as Docker containers or virtual machines, supporting an extensive array of programming languages and operating systems, including Linux, macOS, Android, and Windows. Over the years, the platform has integrated advanced orchestration features, notably "Workflows" for complex pipeline management and "Orbs," which are shareable configuration snippets that simplify third-party integrations with cloud providers like Amazon Web Services (AWS), Google Cloud Platform (GCP), and Microsoft Azure. In response to modern technology trends, the platform has increasingly incorporated security and compliance frameworks tailored for enterprise clients, alongside specialized automated testing pipelines designed for artificial intelligence applications and Large Language Model (LLM) evaluations. From a business and capitalization perspective, CircleCI operates under a private corporate structure and has achieved unicorn status. As a venture-backed entity, the company has raised approximately $315 million to $352 million in total funding across multiple institutional investment rounds. Its notable investment history includes a Series A round led by DFJ, a Series B round by Scale Venture Partners, and subsequent funding rounds backed by prominent venture firms such as Institutional Venture Partners (IVP), Sapphire Ventures, Threshold Ventures, and Owl Rock Capital. In May 2021, CircleCI concluded a $100 million Series F funding round led by Greenspring Associates, which established the company’s post-money valuation at $1.7 billion. Led by Chief Executive Officer Jim Rose, Chief Technology Officer Rob Zuber, and Chief Financial Officer Chitra Balasubramanian, the company employs over 350 professionals. It generates revenue through tiered software-as-a-service (SaaS) subscription matrices, offering usage-based credits for cloud hosting alongside flat-rate packaging for self-hosted enterprise runners. Serving a vast global user base that executes millions of daily builds, CircleCI's historical customer portfolio has included major global enterprises and technology teams such as Facebook, Coinbase, Spotify, Sony, GoPro, and Kickstarter, maintaining its position as a central tool within modern DevOps infrastructure.