Software Engineer, Traffic Management

Available Locations

• Austin, TX
• Lisbon, PT
• London, UK

Job Title

• Software Engineer - Traffic Management

Role Summary
Multiple teams at Cloudflare make up and contribute to its Traffic Management function. Together they are responsible for the systems that optimize the flow of traffic into, through, and from Cloudflare's global network.
They don't just manage one company's traffic; they manage traffic for numerous products and millions of customers, from individual websites to major enterprises. This team is at the heart of Cloudflare's mission to make the internet faster, safer, and more reliable.
Role Responsibilities
As a member of the team you will build and extend various traffic management and supporting systems. You will work closely with Network Engineering, Product Engineering, Network Strategy, and other teams to collaborate on ambitious initiatives to make the best use of Cloudflare's global network.
You will participate in all stages of the software development lifecycle: from designing and documenting systems, to writing code and automated tests, to planning, managing, and monitoring production software deployments. You will work with a wide range of technologies and programming languages, including Go, Python, Rust, eBPF, ClickHouse, Salt, PostgreSQL, Prometheus, Kubernetes, and more.
Our team at Cloudflare operates under a "Run What You Build" model. This means we are responsible for the health of our systems and actively participate in our team's on-call rotation as part of our operational duties.
Because you'll be solving problems of massive scale and significance, and shaping the future of reliability and performance on the Internet, you are a growth-oriented individual who enjoys being outside of your comfort zone. You are comfortable in a fast-paced but sensible work environment. You value curiosity and empathy and lead with these values.
Role Requirements
Must-Have Skills

• Systems-level programming experience in Go, Python, Rust, C, or C++
• A solid grasp of networking protocols in Layers 3 and 4 of the OSI Model.
• Experience/interest in network performance monitoring and tuning, including the use of eBPF and related technologies.
• Knowledge of HTTP, TLS, and CDN networks.
• Experience in implementing, deploying, and debugging secure and highly-available distributed systems.
• Strong collaboration and communication skills.

Bonus Points

• Experience building or developing capabilities in the domain of traffic engineering including automated load balancing and traffic prioritization.
• Knowledge of statistical-analysis techniques and control theory.
• Knowledge of TCP/IP and Internet routing.
• Experience building tools and APIs.
• Experience with monitoring, alerting, and debugging large-scale distributed systems
• Experience participating in an on-call rotation.