Customer Reliability EngineerNew

Cloudflare
Apply now

The opportunity

CRE is a rapid response team and a proactive engineering team. You fix things at the edge as they come up, and you help build the product capabilities that identify customer issues before they become a crisis.

What you'll do

  • Own a Sev-1 incident where a large financial services customer sees: asymmetric latency from a single POP. Trace it through BGP routing and origin configuration. Produce the fix upstream.

  • Diagnose a recurring WebSocket disconnect that a media customer has been: fighting for weeks. Isolate it to a specific interaction between WAF and their origin load balancer. Drive the fix with Product Engineering.

  • Partner with a government customer's SRE team during an active DDoS event.: Help them shape their Magic Transit and WAF configuration in real time.

  • Build, with Product Engineering, a distributed tracing capability that: correlates Cloudflare edge signals with customer origin metrics so a single query tells the story of a failing request end-to-end.

  • Ship a detector for a class of WAF false positives silently degrading several: customers. Get it into production before the next renewal cycle.

  • Prototype an AI agent that takes a new customer case, pulls relevant logs and: config, and proposes a root cause with linked evidence. Deploy it internally. Measure whether it makes engineers faster. Iterate.

What they're looking for

  • Minimum 5 years of hands-on experience in site reliability engineering,: escalation engineering, systems engineering, or a comparable deeply technical support / operations role, with at least 2 years in customer-facing environments.
  • Strong foundation in networking and security:
  • TCP/IP fundamentals: OSI model, IPv4/IPv6 addressing, subnetting, routing, switching.
  • Core protocols: DNS, HTTP/S, TLS/SSL, SMTP, SNMP, NTP.
  • Routing protocols: BGP, OSPF, including path selection and route propagation.
  • Firewall concepts: stateful/stateless inspection, rule sets, NAT, ACLs.
  • VPN and encryption: IPSec, SSL/TLS tunnels, GRE.
  • Zero Trust architecture, network segmentation, modern security models.