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# Senior Systems Engineer - Application Security

- **Company:** CloudFlare
- **Location:** San Francisco, CA, United States (Remote available)
- **Experience:** Expert
- **Salary:** $66,000 - $91,000
- **Contract:** Permanent contract
- **Skills:** Systems Engineering, Cyber Security, Linux, Distributed Systems, Web Applications, Web Traffics, DevOps Tools - Open-source, Software Security, Kubernetes, Cloudflare, Apache Kafka
- **Published:** November 8, 2026
- **Apply:** https://www.careerbuilder.com/job-details/senior-systems-engineer-application-security-san-francisco-ca--98249365-0004-4c7a-9f6a-3cc99fd9f0db

## About the Role

Systems Engineering, Applications Security, Blog, Entrepreneurship, Fortune 500 Customers, Website Traffic, Software Installation, Internet Application, Intelligent Network, Performance Management, You must have at least 5 years of professional experience working hands-on as a software developer. We require proficiency with at least one of Go or Rust, plus exposure to devops tooling like but not limited to Kubernetes, Salt, Kafka or Systemd. Strong Linux / Unix fundamentals will be very helpful. You must have experience working with distributed systems at scale. Experience with cyber security is preferred but not essential.

Cloudflare's culture is busy and multifaceted, and people who succeed here are persistent, have a can-do attitude and a genuine willingness to assume good faith in others. This last quality in particular requires them to be empathetic and emotionally intelligent, so you're someone willing to take responsibility for the culture and environment that you create around you.

## Description

* Design systems and write code following bleeding edge industry best practices and help others on the team do the same. Review RFCs, technical specifications and code.
 * Deploy and maintain live software-based services at scale (up to 100m requests / second, 1m customers). Take regular shifts as part of the team's On Call rota.
 * Support and grow other Engineers through knowledge sharing.
 * Keep up to date with trends in detecting current and emerging security risks to web applications and provide input on how these impact Cloudflare's products.
 * Work with Engineers and Product Managers outside your immediate team in communicating our roadmap and getting things done.