Security Engineer (Applied Research & Labs)

Join Cloudflare as a Security Engineer in the Applied Research & Labs function within the Office of the CSO. In this role, you will design and build agentic security workflows and tooling, release open-source reference implementations, and run hands-on workshops for customers and partners. You will also document and package workshop formats, present Cloudflare's security architecture, and author technical deep dives. This position offers a competitive pay package, flexible vacation policy, paid parental leave, comprehensive benefits, and a commuter program.

Responsibilities

• Design and build agentic security workflows and tooling for Cloudflare Security, including multi-agent orchestration, tool integration, and evaluation harnesses.
• Release internal harnesses, skill definitions, and orchestration workflows as documented open-source reference implementations.
• Run hands-on workshops where customers and partners build and deploy the tooling themselves, and document and package workshop formats.

Requirements

• 4+ years in software engineering, shipping and operating production systems
• Demonstrated experience building interactive labs, hands-on learning platforms, or developer training environments, including the infrastructure behind them
• Hands-on experience building LLM-based systems, including agent orchestration, tool use, context engineering, and evaluation
• Working knowledge of application and infrastructure security, including common vulnerability classes and secure development practices
• Published technical writing, conference talks, or open-source contributions
• Experience with Cloudflare Workers, Durable Objects, Workflows, Workers AI, AI Gateway, and Vectorize, or an equivalent serverless stack
• Proficiency in TypeScript, Python, or a comparable language, with production experience in distributed or event-driven systems
• Strong design judgment for technical learning experiences, including scope, sequencing, and knowing what to leave out
• Hands-on security background in any domain
• Experience with the Cloudflare Agents SDK

Preferred

• Experience with developer education, technical certification programs, or developer relations
• Maintainer or significant contributor to an open-source security or developer tooling project
• Experience speaking at security or developer conferences