Software Engineer Intern (Fall 2026)

Available Locations

• Lisbon PT

About the Role

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. Cloudflares network is one of the largest in the world and spans over 330 cities in more than 125 countries. Whats more Cloudflare operates within 50 milliseconds of 95% of the Internet-connected population globally (for context the blink of an eye is 300-400 milliseconds!). We are passionate about making the Internet more secure reliable and faster for everyone.

Cloudflares Engineering teams build and run the software that handles the massive amount of traffic that flows through our network. We also have teams that build the UI and control plane for our software using modern patterns and libraries in a microservices-based architecture. Technologies include: Typescript/Javascript Go Rust C/C and Python.

The ideal intern is passionate about making the Internet a better place. You will work alongside experienced engineers. You will push code this internship that touches hundreds of millions of web surfers. We like to get things done so we are looking for interns who are curious proactive and able to complete projects. This is a great opportunity for engineers who want to learn to develop at Internet scale.

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

Responsibilities

• Ship and deliver projects over 12-14 weeks with autonomy and support.
• Work cross-functionally with various teams.
• Work closely with a mentor to guide you through the internship and help with career goals.
• Build your network across the company through our various in and out of office socials networking programs Employee Resource Group (ERG) programs and Activity Groups.
• Present your project to the entire company at the end of the internship.
• Connect and learn from our executives and leadership team including our co-founders.
• Learn and develop skills through our professional development workshops.
• Write for our Cloudflare blog and be featured on sessions.

Desirable Skills Knowledge and Experience

• Currently pursuing a degree or program in Computer Science Engineering Mathematics Statistics or relevant field to the role.
• 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 full-time (40 hours/a week Monday - Friday) for a minimum 12 week internship.
• Our available terms are September 14 - December 4 or September 28 - December 18.
• In office 3-5 days a week in Lisbon PT.

Bonus Points

Demonstrated passion for software development such as personal projects open-source contributions or experience with our developer platform usingCloudflare for Students.

For Portugal based hires: the monthly salary is 2450.

Please note

• We will be hiring interns on a rolling basis until all roles are filled.

What Makes Cloudflare Special

Were not just a highly ambitious large-scale technology company. Were 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 weve equipped more than 2400 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 Cloudflares 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 weve 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. Heres the deal - we dont 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 youd like to be a part of Wed love to hear from you!

Please note that applicants who progress to the offer stage of the interview process may be asked to attend an in-person interview within one of the Cloudflare Offices or Cloudflare Hubs. More details about this will be available at that stage of the interview process.

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 persons 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 or via mail at 101 Townsend St. San Francisco CA 94107.