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CircleCI (also known as Circle Internet Services) is a company that develops a continuous integration and continuous delivery (CI/CD) platform. It provides a tool that enables developers to code for web and mobile applications by automating the build, test, and deployment process. In addition, the platform helps developers to detect and fix bugs.
HQSan Francisco, CA, US
Employee Ratings4.1
Overall CultureA

Latest Updates

Employees (est.) (Apr 2022)652(+2%)
Job Openings46
Cybersecurity ratingBMore
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Key People/Management at CircleCI

Jim Rose

Jim Rose

Paul Biggar

Paul Biggar

Rob Zuber

Rob Zuber

Chitra Balasubramanian

Chitra Balasubramanian

Erich Ziegler

Erich Ziegler

Jane Kim

Jane Kim

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CircleCI Office Locations

CircleCI has an office in San Francisco
San Francisco, CA, US (HQ)
201 Spear St #1200, San Francisco
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CircleCI Financials and Metrics

Summary Metrics

Founding Date


CircleCI total Funding

$315 m

CircleCI latest funding size

$100 m

Time since last funding

a year ago

CircleCI investors

CircleCI's latest funding round in May 2021 was reported to be $100 m. In total, CircleCI has raised $315 m
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CircleCI Operating Metrics

Jul, 2019

Services Partners

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CircleCI Cybersecurity Score

Cybersecurity ratingPremium dataset



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CircleCI Online and Social Media Presence

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CircleCI Company Culture

  • Overall Culture



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  • Diversity



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CircleCI Blogs

Docker image versus container: What are the differences?

If you are new to Docker, you may find it challenging to understand all the terms. It can seem like everyone has a different idea of what Docker terms mean, and sometimes, terms get used interchangeably. For instance, you — like others who are learning about Docker — may wonder how a Docker image d…

Automate testing for Golang Gin-gonic RESTful APIs

This tutorial covers: Building a RESTful API with Golang using the Gin-gonic framework Writing and running tests for endpoints Automating tests Gin is a high-performance HTTP web framework written in Golang. It contains features and functionalities like routing and middleware …

Software bill of materials: What it is and why you need one

Most organizations that make software — from small startups to multi-billion-dollar behemoths — use third-party libraries and tools to develop their applications. Modern apps depend on many external components to build and deliver software to customers. These libraries and tools are collectively cal…

Making HTTP requests with Axios

This tutorial covers: Why use Axios? Making Axios POST and GET requests Testing the requests Axios is a promise-based HTTP library that lets developers make requests to either their own or a third-party server to fetch data. It offers different ways of making requests such as …

Application logging with Flask

This tutorial covers: The Flask logging module Logging Flask events by severity level Testing the logging module Without logs, or a good understanding of them, debugging an application or looking through an error stack trace can be challenging. Luckily, Flask logging can chang…

Code quality metrics: How to evaluate and improve your code

High-quality code is efficient and reliable, runs well without bugs, and meets user needs. It can cope with errors or unusual conditions. It is also easy to understand, maintain, and expand with new features. Additionally, its portability means that it can run on as many machines as reasonably possi…
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CircleCI Frequently Asked Questions

  • When was CircleCI founded?

    CircleCI was founded in 2011.

  • Who are CircleCI key executives?

    CircleCI's key executives are Jim Rose, Paul Biggar and Rob Zuber.

  • How many employees does CircleCI have?

    CircleCI has 652 employees.

  • Who are CircleCI competitors?

    Competitors of CircleCI include Gitlab, JFrog and GitHub.

  • Where is CircleCI headquarters?

    CircleCI headquarters is located at 201 Spear St #1200, San Francisco, San Francisco.

  • Where are CircleCI offices?

    CircleCI has an office in San Francisco.

  • How many offices does CircleCI have?

    CircleCI has 1 office.