Principal Systems Engineer, FL

About Us

At Cloudflare, we are on a mission to help build a better Internet.

The Team

Cloudflare's Front Line (FL) group operates the world's largest web server, which processes over 120 million HTTP requests every second.

As part of the Platform team, you will play a pivotal role in evolving this system.

The Role

As a Senior Engineer/Architect on the Platform team, you will be instrumental in building the next generation of our core web server.

You will coordinate efforts across multiple teams to design, build, and deploy new features that enhance the availability, safety, and reliability of our edge network.

Your primary focus will be on building a high-performance platform with a keen eye on operational excellence.

What You'll Bring

We are looking for seasoned professionals with a strong background in software architecture and distributed systems.

• Deep expertise in Rust, with a history of building complex, production-grade applications.
• Strong competencies in computer science, including a solid understanding of algorithms, data structures, and concurrency control.
• Experience with performance engineering and a proven track record of optimizing high-throughput, low-latency systems.
• Excellent communication and collaboration skills to drive consensus and coordinate with diverse engineering teams.
• A passion for continuous improvement in both operations and product development.

Bonus Points

• A deep understanding of web protocols and web servers.
• Experience with distributed systems architecture.
• Knowledge of web security issues and industry standards.
• Familiarity with Prometheus for monitoring and alerting.

Most importantly, we're seeking a builder—someone who is excited by the challenge of working on a system at a scale few companies ever reach.

What Makes Cloudflare Special?

We’re not just a highly ambitious, large-scale technology company.

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.

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.

Sound like something you’d like to be a part of? We’d love to hear from you!