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.
The Threat Detection and Security Incident Response teams are responsible for identifying, understanding, detecting, and responding to threats targeting Cloudflare.
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 12-16 weeks that directly improves Cloudflare's defensive posture.
- With a focus on threats and how they operate, work to build and improve systems that are the front lines of protecting Cloudflare from malicious attacks.
- Work with Incident Response Engineers to triage and respond to security alerts and incidents.
- Use the latest technologies and techniques to engineer solutions to enhance incident response and security operations. Including automation, agentic AI and others
- 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.
Desirable skills, knowledge and experience
- Understanding of attacker Tools, Techniques, and Procedures (TTPs)
- Understanding of operating systems, SaaS applications, CI/CD, and common security tools.
- Understanding of the Incident Response Lifecycle.
- Proficiency in at least one scripting/programming language for automation.
- 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 Lisbon 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.
Cloudflare Compensation & Benefits Highlights
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Parental & Family Support — Up to 16 weeks of paid bonding leave for qualifying new parents and inclusive family-forming benefits (fertility, adoption, gestational carrier support) are explicitly offered. These provisions reflect a broad, inclusive approach to supporting different paths to parenthood.
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Leave & Time Off Breadth — 'Take‑what‑you‑need' (unlimited) vacation is promoted alongside paid holidays. This structure signals strong flexibility for taking time off.
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Equity Value & Accessibility — Equity is positioned as part of total rewards for all employees, complemented by an employee stock purchase plan. Broad access to ownership can meaningfully augment total compensation when equity performs well.
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What We Do
Cloudflare, Inc. (NYSE: NET) is the leading connectivity cloud company on a mission to help build a better Internet. It empowers organizations to make their employees, applications and networks faster and more secure everywhere, while reducing complexity and cost. Cloudflare’s connectivity cloud delivers the most full-featured, unified platform of cloud-native products and developer tools, so any organization can gain the control they need to work, develop, and accelerate their business. Powered by one of the world’s largest and most interconnected networks, Cloudflare blocks billions of threats online for its customers every day. It is trusted by millions of organizations – from the largest brands to entrepreneurs and small businesses to nonprofits, humanitarian groups, and governments across the globe.
Why Work With Us
Cloudflare employees come from all walks of life. We are mission-driven, and our team is energized by a collaborative, creative environment that celebrates our differences and fosters new ways to grow together.
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Employees engage in a combination of remote and on-site work.
We are committed to developing a global team that is distributed with a flexible working approach. Doing this equitably and inclusively is essential to our success. Visit our careers site for more on 'How & Where We Work.'
