Sr. Network Test Engineer – Wireless, Broadband & Ip

Inabia Software & Consulting Inc.; Greater London; On-site; GBP 90,000 - 120,000; Full time

Job summary

Inabia Software & Consulting Inc. in London seeks a Senior Network Test Engineer to test 5G/LTE, Wi‑Fi, and broadband/IP networks for a major telecom program.

The role is onsite in London with periodic travel to Luton, long-term contract, and requires hands-on lab and field testing of CPE, routers, switches, and VPN endpoints. The ideal candidate has strong LTE/5G RAN or drive-testing background, solid IP networking knowledge, and hands-on use of Wireshark, iPerf, and tcpdump.

Qualifications

• Broadband/CPE validation experience required.
• Strong IP networking fundamentals (routing, NAT, VLANs, 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 in English.

Responsibilities

• Validate broadband & CPE / gateway devices in lab and field.
• Validate performance 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 IPv4/IPv6, VLANs, DHCP, DNS, NAT, port forwarding, firewall rules.
• Test VPN technologies: IPsec, SSL VPNs, WireGuard, OpenVPN.
• Troubleshoot Layer 2–Layer 7 connectivity using Wireshark, tcpdump, traceroute, iPerf.
• Testbed Setup & Environment Ownership: build/maintain test environments with routers, switches, servers, VPN endpoints.
• Ensure test repeatability via documentation, configuration management, and version control.
• Integrate new firmware, OS builds, and network parameters into test cycles.
• Tools, Log Analysis & Reporting: use Wireshark, tcpdump, iPerf, Rasberry Pi.
• Produce clear test plans, defect reports, KPI dashboards, and root-cause analyses.
• Collaborate with broadband engineers, device OEMs, and network operators.

Skills

Broadband validation

CPE validation

IP networking

CCNA

Wireshark

iPerf

tcpdump

Testbed design

Documentation

Fluent English

Tools

Wireshark

iPerf

tcpdump

Raspberry Pi

Job 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.