Senior AI Engineer

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. 

At Cloudflare, we’re not looking for people who wait for a polished roadmap; we’re looking for the builders who see the cracks in the Internet that everyone else has simply learned to live with. We value candidates who have the instinct to spot a "normalized" problem and the AI-native curiosity to create a solution using the latest tools. Our culture is built on iteration, leveraging AI to ship faster today to make it better tomorrow, while ensuring that every improvement, no matter how small, is shared across the team to lift everyone up. If you’re the type of person who values curiosity over bureaucracy, and that AI is a partner in solving tough problems to keep the Internet moving forward, you’ll fit right in.

Preferred Location: Lisbon, Portugal | London, UK

Other Locations: Austin, TX

About the Role

We are building a new, high-impact team of AI application experts to define, drive, and develop our AI solutions, from AI observability to autonomous intelligent agents. As a Senior AI Engineer, you will be instrumental in defining Cloudflare’s AI strategy, leading critical projects such as LLM-powered code generation, AI observability, and edge-optimized model inference. This role requires bringing cutting-edge AI capabilities to our developer platform and will involve setting the technical direction for high-performance, scalable AI applications that push the boundaries of what’s possible on the web.

About the Department

Our team is part of Cloudflare's Emerging Technology and Incubation (ETI) team where new, bold products are built and released within Cloudflare. Rather than being constrained by the structures which make Cloudflare a successful business, ETI leverages our network to deliver entirely new tools and products to our customers. Our most successful endeavors include the Cloudflare development platform, which is composed of Cloudflare Workers, Durable Objects, R2, D1, and many other developer products.

What you'll do

As a Senior member of the AI Applications team, you will own and strategically shape the future of AI-powered applications on our platform. You will work across Cloudflare’s stack, collaborating with teams to define, build, and optimize mission-critical AI solutions that enhance developer experience, security, and performance.

To this end, you will:

• Lead the development of high-impact AI-powered tools and integrations that enhance the developer experience, such as AI-assisted code generation and debugging.
• Design, architect, and implement AI observability solutions to improve model monitoring, explainability, and performance optimization at scale.
• Drive cross-functional efforts to integrate AI into Cloudflare’s developer platform, ensuring optimal scalability and efficiency.
• Mentor and champion best practices, engaging with the broader AI and developer community, contributing to open-source projects, technical documentation, and blog posts.
• Work across Cloudflare’s ecosystem to identify and evaluate new AI opportunities, influence technical direction, and drive adoption of AI technologies.
• If applicable to ongoing projects, you may also participate in an on-call rotation to support critical AI-powered services.

Minimum Requirements

• 5+ years of experience, heavy focus on Typescript and Javascript
• Proven experience in building and optimizing AI applications, with a deep understanding of LLMs, model inference, and AI-powered developer tools.
• Expertise in tackling complex debugging challenges, optimizing AI workloads, and working with large-scale distributed systems.

About you

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

Must Have

• Strong experience with Cloudflare platform or similar edge/serverless architectures
• Deep understanding of modern agent patterns and LLM application development
• Excellence in TypeScript, with expertise in async, performance optimization
• Experience with AI/ML tooling: prompts, evals, safety systems, observability
• Ability to communicate complex technical concepts to diverse stakeholders

Nice to Have

• Experience with Agents SDK, Workers AI, AI Gateway, and Vectorize in production
• Security depth: prompt injection protection, PII handling, secrets management

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.