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Software Engineer, Application Performance

Cloudflare is a global network company on a mission to build a better Internet by improving performance, security, and reliability for millions of properties. The Application Performance engineering organization seeks curious, empathetic engineers who enjoy debugging and building distributed systems at Internet scale to improve web and application performance across Cloudflare's edge network.

Skills

  • Strong debugging skills for distributed, high-volume production systems
  • Solid understanding of TCP, QUIC, and HTTP protocols
  • Experience with Linux networking and systems-level programming
  • Familiarity with CI/CD and git-based workflows
  • Ability to reason about security and build secure systems
  • Experience with monitoring, alerting, and production observability
  • Comfort working in multiple systems languages (bonus: Go or Rust)
  • Experience with high-performance databases (e.g., PostgreSQL, ClickHouse)
  • Ability to analyze large datasets to inform decisions
  • Experience building fault-tolerant, elastic systems

Responsibilities

  • Design, implement, and maintain systems that improve application and web performance at the edge
  • Debug complex distributed systems across networking, proxying, caching, and origin connectivity
  • Collaborate with product and cross-functional teams to ship features with high availability and low latency
  • Build and maintain monitoring, alerting, and observability for production services
  • Participate in code reviews, CI/CD workflows, and release processes
  • Optimize system throughput and resource usage, including network protocol-level tuning
  • Analyze large datasets to drive performance improvements and detect anomalies
  • Contribute to open source projects and internal tooling as appropriate

Education

  • BA/BS in Computer Science, Engineering, or related field, or equivalent professional experience
  • Graduate degrees welcome but not required

Benefits

  • Competitive salary and equity compensation
  • Hybrid work model with flexible working arrangements
  • Comprehensive health benefits and retirement savings
  • Generous paid time off and parental leave
  • Professional development and learning opportunities
  • Inclusive, mission-driven culture and employee resource programs
To read the complete job description, please click on the ‘Apply’ button
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Average salary estimate

$185000 / YEARLY (est.)
min
max
$130000K
$240000K

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Cloudflare is on a mission to help build a better Internet. Today the company runs one of the world’s largest networks, with nearly 10 percent of the Fortune 1,000 as paying customers and approximately 19 percent of the top 10,000 websites using a...

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SENIORITY LEVEL REQUIREMENT
TEAM SIZE
SALARY RANGE
$130,000/yr - $240,000/yr
EMPLOYMENT TYPE
Full-time, hybrid
DATE POSTED
October 10, 2025
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