Red Team Security Intern (S (Archived) | VirtualInterview.ai

About Us

At Cloudflare, we are on a mission to help build a better Internet. Today the company runs one of the world’s largest networks that powers millions of websites and other Internet properties for customers ranging from individual bloggers to SMBs to Fortune 500 companies. Cloudflare protects and accelerates any Internet application online without adding hardware, installing software, or changing a line of code. Internet properties powered by Cloudflare all have web traffic routed through its intelligent global network, which gets smarter with every request. As a result, they see significant improvement in performance and a decrease in spam and other attacks. Cloudflare was named to Entrepreneur Magazine’s Top Company Cultures list and ranked among the World’s Most Innovative Companies by Fast Company.

We realize people do not fit into neat boxes. We are looking for curious and empathetic individuals who are committed to developing themselves and learning new skills, and we are ready to help you do that. We cannot complete our mission without building a diverse and inclusive team. We hire the best people based on an evaluation of their potential and support them throughout their time at Cloudflare. Come join us!

Available location(s): London, United Kingdom

About Cloudflare's Security Team

Security is at the heart of Cloudflare’s mission to help build a better Internet. Anytime we push code, it automatically affects the millions of Internet properties (powering websites, remote teams, APIs, mobile apps, etc.) running on our global network. Cloudflare's network is one of the largest in the world, spanning over 330 cities in more than 125 countries, and operating within 50 milliseconds of 95% of the Internet-connected population.

Cloudflare’s Red Team does cutting edge research to ensure that we are ahead of the game, making sure that if attackers are doing it, we are too - and working with teams across the company to demonstrate and mitigate new and novel attacks.

About the Internship Program

The ideal Security intern is passionate about making the Internet a more secure place. You will work alongside experienced security team members to partner with them in planning, executing and overseeing initiatives that help improve Cloudflare’s security posture. We are looking for interns who are curious, proactive, and able to approach problems with a "security-first" mindset. This is a unique opportunity for candidates who want to learn how to defend systems at a scale that few other companies can offer.

What would you do as a Cloudflare intern?

Execute a specialized security project over 12 weeks that directly improves Cloudflare’s defensive posture.

Understand, research and demonstrate how threat actors operate, from finding and using exploits via building command and control frameworks to understanding and reporting on our attack surface, both internally and externally.

Work cross-functionally with Legal, People, Engineering, and Finance teams to integrate security into the fabric of the company.

Work closely with a mentor who will provide hands-on guidance in your specific security domain.

Present your security project to the entire company at the end of the internship.

Connect and learn from our executives and leadership team including our co-founders.

Write for our Cloudflare blog and be featured on Cloudflare.tv sessions.

You can check out our internship blogs to learn more about our program and hear directly from our past interns.

Examples of desirable skills, knowledge and experience

The ability to think like an attacker - if an attacker was here, what would they do?

Demonstrated critical thinking skills and drive to learn and adapt new technologies.

Curiosity, empathy and ability to get things done.

Ability to commit to a minimum 12 week summer internship.

In office 3-5 days a week in the London office.

Bonus: Demonstrated passion for security & software development, such as personal projects, open-source contributions, or experience with our developer platform using Cloudflare for Students.

What Makes Cloudflare Special?

We’re not just a highly ambitious, large-scale technology company. We’re a highly ambitious, large-scale technology company with a soul. Fundamental to our mission to help build a better Internet is protecting the free and open Internet.

Project Galileo: Since 2014, we've equipped more than 2,400 journalism and civil society organizations in 111 countries with powerful tools to defend themselves against attacks that would otherwise censor their work, technology already used by Cloudflare’s enterprise customers--at no cost.

Athenian Project: In 2017, we created the Athenian Project to ensure that state and local governments have the highest level of protection and reliability for free, so that their constituents have access to election information and voter registration. Since the project, we've provided services to more than 425 local government election websites in 33 states.

1.1.1.1: We released 1.1.1.1 to help fix the foundation of the Internet by building a faster, more secure and privacy-centric public DNS resolver. This is available publicly for everyone to use - it is the first consumer-focused service Cloudflare has ever released. Here’s the deal - we don’t store client IP addresses never, ever. We will continue to abide by our privacy commitment and ensure that no user data is sold to advertisers or used to target consumers.

Sound like something you’d like to be a part of? We’d love to hear from you!

This position may require access to information protected under U.S. export control laws, including the U.S. Export Administration Regulations. Please note that any offer of employment may be conditioned on your authorization to receive software or technology controlled under these U.S. export laws without sponsorship for an export license.

Cloudflare is proud to be an equal opportunity employer. We are committed to providing equal employment opportunity for all people and place great value in both diversity and inclusiveness. All qualified applicants will be considered for employment without regard to their, or any other person's, perceived or actual race, color, religion, sex, gender, gender identity, gender expression, sexual orientation, national origin, ancestry, citizenship, age, physical or mental disability, medical condition, family care status, or any other basis protected by law. We are an AA/Veterans/Disabled Employer.

Cloudflare provides reasonable accommodations to qualified individuals with disabilities. Please tell us if you require a reasonable accommodation to apply for a job. Examples of reasonable accommodations include, but are not limited to, changing the application process, providing documents in an alternate format, using a sign language interpreter, or using specialized equipment. If you require a reasonable accommodation to apply for a job, please contact us via e-mail at hr@cloudflare.com or via mail at 101 Townsend St. San Francisco, CA 94107.

Red Team Security Intern (Summer 2026)

Job Description