Performance Engineer

Capture and analyze network traffic to isolate application delays, connection failures, retransmissions, packet loss, and other performance problems.
*Diagnose application-layer issues involving web traffic, APIs, name resolution, encrypted sessions, and authentication workflows.
 *Trace end-to-end traffic paths across campus, data center, internet, and cloud environments to identify where service degradation occurs.
*Troubleshoot performance within Cisco routing, switching, SD-WAN, and Direct Internet Access environments.
*Investigate latency and connectivity concerns affecting Azure ExpressRoute and other hybrid-cloud services.
*Coordinate with application, network, cloud, infrastructure, and operations teams to validate root cause and implement lasting improvements.
*Provide technical support during high-impact incidents and produce clear root-cause findings, timelines, and follow-up actions.
*Establish performance baselines, review recurring trends, and recommend changes that improve availability and the end-user experience.
*Create troubleshooting guides, operating procedures, and technical documentation that strengthen team response capabilities.

Required Qualifications

*Professional experience diagnosing application and network performance problems in a large enterprise environment.
*Advanced packet-capture and protocol-analysis skills using Wireshark, tcpdump, or comparable tools.
*Strong knowledge of Layer 7 technologies and services, including HTTP/S, REST APIs, DNS, TLS/SSL, and common authentication flows.
*Working expertise in TCP/IP, routing, switching, latency analysis, packet loss, and traffic-flow troubleshooting.
*Hands-on experience supporting Cisco enterprise networks; exposure to SD-WAN and Direct Internet Access architectures.
*Experience troubleshooting Azure ExpressRoute or comparable private hybrid-cloud connectivity.
*Ability to explain complex technical findings clearly and collaborate across multiple technology teams.
*Experience contributing to incident response and formal root-cause analysis.