IP Network Test Engineer - Automation & Resiliency

NS4 Inc; Fort Meade, Northern (MD, KY); On-site; USD 90,000 - 120,000; Full time

Job summary

NS4 Inc. is seeking an IP Network Test Engineer to design, develop, execute, and document test activities for large-scale IP networks and services.

You will work with senior engineers and customer teams to validate performance, resiliency, and interoperability in lab and production-like environments. The role involves hands-on testing, troubleshooting complex network issues, and helping automate repeatable testing.

Qualifications

• Bachelor's degree or equivalent; CCNP/CCIE/JNCIE considered.
• 3–7 years in IP network engineering, testing, or related field.
• SEC+ certification or DoD 8570 Information Assurance Technical / II certification.
• Hands-on experience with enterprise or service-provider network equipment.
• Knowledge of Cisco, Juniper, Nokia, Arista, or other major network platforms.
• Experience with MPLS, Segment Routing, EVPN/VXLAN, QoS, SD‑WAN.

Responsibilities

• Develop, document, and execute IP network test plans, test cases, and test procedures.
• Perform functional and performance testing of routers, switches, firewalls, and network services.
• Validate IP routing, forwarding, resiliency, and convergence behavior.
• Test routing protocols including BGP and OSPF.
• Test IPv4 and IPv6 network functionality.
• Capture and analyze traffic using Wireshark/tcpdump; utilize Ixia/Keysight/Spirent generators.

Skills

Network resiliency testing

High-availability routing

Network virtualization

Python/Ansible scripting

Git/version-control

Automated regression tests/CI/CD

Network modeling/digital twins

Education

Bachelor's degree or equivalent; CCNP/CCIE/JNCIE considered

Tools

Ixia

Keysight

Spirent

Wireshark

Job description

NS4 Inc. is seeking an IP Network Test Engineer to design, develop, execute, and document test activities for large-scale IP networks and services.

You will work with senior engineers and customer teams to validate performance, resiliency, and interoperability in lab and production-like environments. The role involves hands-on testing, troubleshooting complex network issues, and helping automate repeatable testing.