Hiring: Principal Engineer - Cloudforce One Company: Cloudflare Location: Austin, TX Job Posted Time: 2026-09-17 13:03:03 Target Skills & Keywords : Cloudflare, DNS, Data Pipeline, Embedded Systems, HTML, Helm, JavaScript, Kafka, Kubernetes, PostgreSQL, React, Redis, Rust, SQL, SQLite, SSL, Systems Design, TLS, Terraform, TypeScript About the job Experience: •15+ years of cyber security experience with an emphasis on building systems to present adversarial trends and techniques both as an internal reputational service and a product facing analyst service. •10+ years of experience building and operating large-scale distributed systems in production, with demonstrated expertise in complex system architecture and design. Required Skills: •Cloudflare's Trust & Safety team is the frontline defense against platform abuse — phishing, malware distribution, fraud, and content that undermines the safety of the internet. Together, these teams form a unified capability: from tracking an adversary's infrastructure to dismantling it at network scale. •This role may require flexibility to be on-call outside of standard working hours to address technical issues as needed. •Drive architectural direction and technical strategy across Cloudforce One engineering, spanning services that run in Kubernetes, on the edge (Workers, D1), and across Cloudflare's global network. •Identify and dismantle technical bottlenecks, legacy patterns, and architectural debt that slow down threat detection and abuse response — then replace them with systems that are faster, more reliable, and more elegant. •Design and build critical data pipelines and services to collect, enrich, analyze, and expose threat intelligence and abuse signals at massive scale, helping identify Tactics, Techniques, and Procedures (TTPs) and Indicators of Compromise (IOCs). •Serve as a technical force multiplier across multiple concurrent projects — you will context-switch between threat intelligence platforms, abuse detection systems, legal response tooling, and customer-facing security products as priorities demand. •Bring a threat-informed perspective to engineering decisions: understand how adversaries adapt, how detection rules degrade, and how to build systems that stay ahead of evolving attack techniques. •Partner cross-functionally with Threat Intelligence researchers, Trust & Safety analysts, Product, Legal, and other engineering teams to translate complex security and compliance requirements into scalable, production-grade solutions. Qualifications: •Proficiency in writing detection rules using YARA, Snort, or similar detection languages. •Prior experience building threat intelligence platforms, IOC distribution systems, or automated mitigation pipelines. •Comprehensive expertise in DNS, TLS/SSL, HTTP, and web security standards. •This role is eligible to participate in Cloudflare’s equity plan. Interested candidates, please apply directly through the job posting on company's career page or try via AI auto apply on this platform. Don't miss this opportunity to join a forward-thinking team!