Sr. Network Test Engineer – Wireless, Broadband & IP
Inabia Software & Consulting Inc. London, England, United Kingdom · £92K–£100K/yr
Individual and Family Services · 51-200 employees
About the role
The role involves validating broadband and CPE devices, including routers and gateways, across various network environments. You will also be responsible for configuring and troubleshooting IP networking protocols and maintaining complex testbed environments.
What they look for
Requirements
Candidates must have professional experience in broadband and CPE validation along with a strong understanding of IP networking fundamentals. A CCNA certification is strongly preferred, and proficiency with diagnostic tools like Wireshark and iPerf is required.
Full description
Senior Network Test Engineer – Wireless, Broadband & IP
- Location: London, England (Onsite, Full-Time)
- Travel – Periodic travel to Luton
- Employment Type: Contract – Long Term
- Work Authorization: Must have the legal right to work in London (EU/EEA citizen or valid UK work authorization)
Position Overview Inabia is seeking a highly skilled Senior Network Test Engineer to support advanced testing across 5G/LTE, Wi-Fi, and broadband/IP networking environments for a leading telecommunications program based in London. This role blends wireless test engineering with enterprise and broadband networking validation, requiring hands-on experience testing radio networks, IP connectivity, and customer-premises equipment (CPE) in both laboratory and field environments. Engineers with strong LTE/5G RAN or drive-testing backgrounds who also possess broadband/IP networking expertise are strongly encouraged to apply.
Key Responsibilities Broadband & CPE / Gateway Validation• Test residential and enterprise routers, gateways, modems, mesh Wi-Fi systems, and CPE devices.
- Validate performance, reliability, and stability across fiber, DSL, wireless broadband, and Ethernet backhaul.
- Execute LAN/WAN configuration workflows, device onboarding, and end-to-end connectivity validation.
IP Networking, Routing & VPN Testing• Configure and validate IPv4/IPv6, subnetting, VLANs, DHCP, DNS, NAT, port forwarding, and firewall rules.
- Test VPN technologies including IPsec, SSL VPNs, WireGuard, and OpenVPN.
- Troubleshoot Layer 2–Layer 7 connectivity using tools such as Wireshark, tcpdump, traceroute, and iPerf.
Testbed Setup & Environment Ownership• Build and maintain test environments combining broadband routers, switches, servers, VPN endpoints, and test tools.
- Ensure test repeatability through documentation, configuration management, and version control.
- Integrate new firmware, OS builds, and network parameters into test cycles.
Tools, Log Analysis & Reporting• Use tools such as Wireshark, tcpdump, iPerf, and Rasberry Pi.
- Perform deep log analysis (RRC, NAS, SIP, RTP/RTCP, system logs) to identify root causes across wireless and IP layers.
- Produce clear test plans, defect reports, KPI dashboards, and root-cause analyses.
- Collaborate closely with broadband engineers, device OEMs, and network operators.
Required Qualifications• Professional experience in broadband/CPE validation, IP networking.
- CCNA strongly preferred
- Strong understanding of IP networking fundamentals (routing, VLANs, NAT, firewalls, DHCP, DNS).
- Hands-on experience with network test and diagnostic tools (Wireshark, iPerf, tcpdump.
- Ability to design, configure, and troubleshoot complex testbeds across wireless and IP domains.
- Strong analytical, troubleshooting, and documentation skills.
- Fluent or professional working proficiency.
