Frontend Software Engineer, Email Service

Frontend Software Engineer, Email Service

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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.

Lisbon, Portugal

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 massively 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.

As a Frontend Software Engineer focused on Cloudflare's Email Service, you will shape the future of industry‑leading services that redefine what is possible for developers. We don't just copy what other cloud providers do; we work backward from developer needs, reimagining solutions by leveraging our unique global network.

You will own your code from inception to release, delivering solutions at all layers of the software stack to empower Cloudflare customers. On any given day, you might be architecting a new dashboard for metrics, optimizing page performance, or designing a novel API for a new product feature. You can expect to interact with a variety of languages and technologies including, but not limited to JavaScript, Type Script, and Go.

• We want someone who understands and obsesses over front‑end systems.
• Passion for improving developer experience and increasing development velocity.
• Multiple years of experience in frontend engineering, specializing in JavaScript, Type Script, and React.
• Strong knowledge of UI infrastructure, CI/CD, and testing frameworks (e.g., Playwright, Cypress).
• Proven ability to drive projects independently, from concept to implementation.

• Expertise in React, Type Script, and modern front‑end systems
• Experience with modern JavaScript bundling tools like Webpack or Vite
• Familiarity with RESTful APIs
• Familiarity with backend software development in Go
• Experience building and maintaining integration test suites with API mocks
• Experience building and scaling large‑scale web applications.

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.

Associate

Full‑time

Engineering and Information Technology

IT Services and IT Consulting, Technology, Information and Internet, and Computer and Network Security