Network Test Engineer ( local to UK )

Senior Network Test Engineer Wireless Broadband & IP

Location: London UK (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

We are 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.

Required Skills & Experience

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 2Layer 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.
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.

Preferred 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.