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# Network Performance Engineer

- **Company:** AGENSYS CORP
- **Location:** Denver, CO, United States
- **Experience:** Experienced
- **Contract:** Permanent contract
- **Skills:** Amazon Web Services, Application Performance Management, Microsoft Azure, Bash Shell, Border Gateway Protocol, Network Congestion, Deep Packet Inspection, Multi-protocol Systems, Python (Programming Language), NetFlow, Packet Analyzer, Open Shortest Path First (OSPF), Ansible, Simple Network Management Protocols, TCP/IP, Virtual Local Area Networks, Wide Area Networks, Grafana, HybridCloud, NetScout, Low Latency, SolarWinds (Software), Appdynamics, Cisco, Custom Reports, Servicenow
- **Published:** June 12, 2026
- **Apply:** https://www.clearancejobs.com/jobs/8972161/network-performance-engineer

## About the Role

* 3+ years of hands-on Netscout experience (nGeniusONE, InfiniStream, nGenius Pulse, or ASI)
 * Strong knowledge of TCP/IP, BGP, OSPF, MPLS, QoS, and VLANs
 * Experience with packet capture analysis and deep packet inspection (DPI)
 * Ability to design and implement network performance dashboards
 * Experience troubleshooting Layer 2-7 issues in large enterprise or service provider environments
 * Knowledge of SNMP, NetFlow/IPFIX, and syslog integrations
 * Strong communication and analytical skills

Nice to Have:

 * Cable, telecom, or ISP/MSO experience
 * SolarWinds, ThousandEyes, Grafana, or AppDynamics
 * Python, Ansible, or Bash scripting
 * Cisco CCNP / CCIE
 * SD-WAN, AWS/Azure networking, or hybrid cloud experience
 * ServiceNow and ITIL familiarity

## Description

* Monitor, support, and troubleshoot enterprise network infrastructure using Netscout nGeniusONE and InfiniStream
 * Serve as the Netscout SME, providing Tier 2/3 support for network performance incidents
 * Identify and resolve network anomalies, packet loss, latency, and application performance issues
 * Partner with NOC, network engineering, and application teams to perform root cause analysis
 * Maintain and optimize Netscout probe and appliance deployments
 * Support change management and validate network changes with performance analysis
 * Design and maintain real-time performance dashboards
 * Develop custom reports, alerts, and visualizations to proactively identify trends and capacity concerns
 * Participate in capacity planning, documentation, and on-call support activities


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