Software Engineer, Engagement & Privacy Analytics

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!

About the Department Emerging Technologies & Incubation (ETI) is where new and bold products are built and released within Cloudflare. Rather than being constrained by the structures which make Cloudflare a hugely successful business, we are able to leverage them to deliver entirely new tools and products to our customers. Cloudflare's edge and network make it possible to solve problems at massive scale and efficiency which would be impossible for almost any other organization.

About the Team Our team builds on top of the Cloudflare development platform, pushing its limits to deliver tooling ranging from open source dev-tooling contributions to bespoke Enterprise-grade product solutions for massive-traffic volumes and bespoke customer demands.

What started with Cloudflare Zaraz - a solution that made third-party tooling safer, faster, and more privacy-conscious - has grown into a broader mandate. Today, our scope has broadened to include stewardship of CDNJS, the open source Managed Components project, and a range of strategic initiatives focused on empowering developers with more control over data privacy and analytics.

At our core, we're building new ways to help web application owners streamline development and accelerate growth on the Internet.

We are a tight-knit team, communicating & collaborating regularly. We like to celebrate our achievements, support each other when we make mistakes, and hold each other and our work to the highest standard.

What you'll do In this role, you will join world-class engineers in shaping new products built entirely on Cloudflare's global network, while continuing to nurture the growing impact of existing offerings - ensuring continual reliability, best-in-class performance, and the implementation of new features and functionality.

You will be encouraged to bring your ideas forward and own your code from inception to release, delivering solutions at every layer of the software stack to empower Cloudflare customers. On any given day, you might:

• Write a design document outlining your strategy to tackle a specific challenge.
• Ship a new feature that integrates multiple technologies.
• Fix a bug affecting how our user experience renders.

You can expect to work with a variety of languages and technologies including, but not limited to, TypeScript, Go, and Rust. We use Cloudflare Workers heavily and creatively. If applicable to ongoing projects, you will also help maintain the health and availability of services by participating in an on-call rotation.

About you We want you to love it here! This role is a great fit for you if:

• You have a passion for meeting business needs while building technically innovative solutions, and you excel at balancing big-picture goals with technical detail.
• You are bold and persistent in your efforts to get your work across the finish line.
• You are excited to collaborate and communicate with engineers across Cloudflare, contributing across many layers of the stack.
• You take pride in shipping effective, reliable code.
• You are energized by learning new skills, tackling challenging debugging sessions, and sharing your knowledge with others.
• You believe that thorough documentation is just as important as delivering code.
• You want to join a team that upholds a culture of support, open and honest communication, and collaborative problem-solving.

Examples of Desirable Skills, Knowledge, and Experience

• 2+ years of experience working with high-volume software applications, with a strong focus on the TypeScript programming language.
• Ability to scope, work on, and independently deliver initiatives.
• Knowledge of at least one modern, strongly-typed programming language such as Go, Rust, or C++.
• Strong written communication skills for contributing to both internal and public-facing technical documentation, as well as authoring blog posts.
• Strong understanding of how web pages load and operate, including the role of cookies, browser rendering, and client-side execution models

Bonus Points

• Familiarity with the ecosystem of third-party scripts (e.g., marketing pixels, analytics tags, consent managers) and their impact on performance, privacy, and user experience
• Experience building reliable, high-performance distributed systems or working on cloud platforms.
• Familiarity with the Cloudflare Workers development platform.
• Experience contributing to or maintaining open source software projects.

Locations: Lisbon

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