Security Engineer, Labs & Open-Source Tooling

VulnU; Austin (TX); Hybrid; USD 140,000 - 190,000; Full time

Benefits offered by this job

Equity

Flexible PTO

16 weeks parental leave

Job summary

Cloudflare in Austin, TX is seeking a Security Engineer to design and build agentic security tooling for Cloudflare Security, with reference open-source implementations and hands-on labs for customers and partners.

You will work embedded with Cloudflare's security teams, implement on serverless stacks, and lead labs and workshops. Remote travel up to 15-25% is expected to support sessions across EMEA and APAC time zones.

Qualifications

• 4+ years in software engineering, shipping and operating production systems.
• Experience building interactive labs, hands-on learning platforms, or developer training environments.
• Proficiency in TypeScript, Python, or a comparable language, with production experience in distributed or event-driven systems.
• Hands-on experience building LLM-based systems, including agent orchestration, tool use, context engineering, and evaluation.
• Experience with Cloudflare Workers, Durable Objects, Workflows, Workers AI, AI Gateway, and Vectorize, or an equivalent serverless stack.
• Working knowledge of application and infrastructure security and secure development practices.
• Published technical writing, conference talks, or open-source contributions.
• Bonus points: security background, SDK experience, open-source contributions.

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.
• Implement on Cloudflare Workers, Durable Objects, Workflows, Workers AI, AI Gateway, and the Agents SDK.
• Define the technical scope and sequencing of labs, including failure modes and scaffolding.
• Build and operate the lab infrastructure: per-participant isolation, automated provisioning, state reset, and teardown.
• Run hands-on workshops where customers and partners build and deploy the tooling themselves.
• Document and package workshop formats for other Cloudflare engineers to deliver.
• External Engagement: Present Cloudflare's agentic security architecture through customer briefings and talks.
• Partner with Product and Engineering to align external technical content with the roadmap.

Skills

TypeScript

Python

Distributed systems

Event-driven

LLM-based systems

Agent orchestration

Security engineering

Open-source contributions

Tools

Cloudflare Workers

Durable Objects

Workflows

Workers AI

AI Gateway

Vectorize

Job description

Cloudflare in Austin, TX is seeking a Security Engineer to design and build agentic security tooling for Cloudflare Security, with reference open-source implementations and hands-on labs for customers and partners.

You will work embedded with Cloudflare's security teams, implement on serverless stacks, and lead labs and workshops. Remote travel up to 15-25% is expected to support sessions across EMEA and APAC time zones.