Systems Engineer - Traffic Management

Cloudflare•San Francisco, CA

About The Position

At Cloudflare, we are on a mission to help build a better Internet. Today the company runs one of the world’s largest networks that powers millions of websites and other Internet properties for customers ranging from individual bloggers to SMBs to Fortune 500 companies. Cloudflare protects and accelerates any Internet application online without adding hardware, installing software, or changing a line of code. Internet properties powered by Cloudflare all have web traffic routed through its intelligent global network, which gets smarter with every request. As a result, they see significant improvement in performance and a decrease in spam and other attacks. Cloudflare was named to Entrepreneur Magazine’s Top Company Cultures list and ranked among the World’s Most Innovative Companies by Fast Company. We realize people do not fit into neat boxes. We are looking for curious and empathetic individuals who are committed to developing themselves and learning new skills, and we are ready to help you do that. We cannot complete our mission without building a diverse and inclusive team. We hire the best people based on an evaluation of their potential and support them throughout their time at Cloudflare. Come join us! Available Locations: London, UK or Lisbon, Portugal Role Summary The Traffic Management is responsible for the systems that dynamically route traffic flows into, through, and from Cloudflare's global network. We 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.

Requirements

Minimum of 2 years of engineering experience with networking and/or distributed systems.
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.
Knowledge/interest in HTTP, TLS, and CDN networks.
Experience/interest in network performance monitoring and tuning
Strong collaboration and communication skills.

Nice To Haves

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.

Responsibilities

build and extend various traffic management and supporting systems
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
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
work with a wide range of technologies and programming languages, including Go, Python, Rust, eBPF, ClickHouse, Salt, PostgreSQL, Prometheus, Kubernetes, and more
responsible for the health of our systems and actively participate in our team's on-call rotation as part of our operational duties

Benefits

Cloudflare offers a complete package of benefits and programs to support you and your family.
Our benefits programs can help you pay health care expenses, support caregiving, build capital for the future and make life a little easier and fun!
Medical/Rx Insurance
Dental Insurance
Vision Insurance
Flexible Spending Accounts
Commuter Spending Accounts
Fertility & Family Forming Benefits
On-demand mental health support and Employee Assistance Program
Global Travel Medical Insurance
Short and Long Term Disability Insurance
Life & Accident Insurance
401(k) Retirement Savings Plan
Employee Stock Participation Plan
Flexible paid time off covering vacation and sick leave
Leave programs, including parental, pregnancy health, medical, and bereavement leave