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Senior Manager, Performance Engineering

Cloudflare, Inc.
UKRemotefull_timeVerifiedPosted 30 May 2025

About the role

About Us

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! 

Senior Manager, Performance Engineering

Available Locations: Hybrid - New York City and London

Role Summary

We're looking for a Senior Manager, Engineering to lead our Performance Engineering (PERF) team. The PERF team is crucial for ensuring Cloudflare's production systems are fast, responsive, and scalable. This includes system software, services, products, and solutions running on our infrastructure.

Our core mission is to empower everyone at Cloudflare to prioritize performance. The PERF team achieves this by:

  • Developing and maintaining tools to pinpoint performance issues in products and services.
  • Proactively driving cross-functional initiatives for system software tuning and architectural performance improvements.
  • Assisting and providing training in debugging and analysis of performance.

Ultimately, the team's primary goal is to deliver a best-in-class experience on Cloudflare's infrastructure for both internal products and external customers, directly supporting our business scaling to $5B.

What You'll Do

As a Senior Manager, you will:

  • Lead and grow a high-performing team by hiring, mentoring, and coaching highly capable Software Engineers.
  • Drive significant performance improvements at both the system and datacenter levels.
  • Collaborate closely with Product and Engineering stakeholders to prioritize, plan, and execute projects effectively.
  • Ensure clear communication of status and impact through various tools, discussions, and meetings.
  • Leverage your technical expertise to scope projects, facilitate cross-team collaboration, and unblock initiatives.

What You Bring

We're looking for someone with:

  • 4+ years of experience as an Engineering Manager leading Software Engineers.
  • Deep understanding of performance measurement and evaluation, including compute platform internals like CPU, memory, Operating System (Linux), and networking and their impact on performance.
  • Proven ability to plan, build, and oversee execution to meet commitments and deliver predictably.
  • A strong track record of managing high-performing teams, including successful hiring, onboarding, and professional development. You inspire your team to achieve more and are adept at explaining both the "why" and the "how."
  • Experience implementing tools, processes, and internal instrumentation to resolve blockages.
  • Comfort managing distributed teams and projects across multiple locations and time zones, often with tight deadlines and short release cycles.
  • Exceptional clarity in both written and verbal communication.
  • Hands-on experience with Jira, Grafana, and Prometheus.
  • Nice to have
    • Proficiency in systems programming languages such as C (kernel), Go, Rust, and scripting languages like Bash and Python, as well as experience with Salt/SaltStack.

Compensation

Compensation may be adjusted depending on work location.

Equity

This role is eligible to participate in Cloudflare’s equity plan.

Benefits

Cloudflare offers a complete package of benefits and programs to support you and your

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Company

Cloudflare, Inc.

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