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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Network Test Engineer - **Company:** Inabia Software & Consulting - **Location:** London, UK - **Experience:** Expert - **Salary:** £56,313.0 - **Contract:** Permanent contract - **Skills:** 4G (Telecommunication), LTE (Telecommunication), Amazon Web Services, Application Layers, Automation of Tests, Microsoft Azure, Bash Shell, VoIP, Wireless Broadband, Cellular Networks, Computer Networks, System Configuration, Network Congestion, Continuous Integration, Dynamic Host Configuration Protocol, Network Address Translation, DevOps, Domain Name System (DNS), Failover, Firmware, Networking Hardware, Internet Protocol, IPv4, IPv6, Interoperability, IP Routing, Subnetting, Traceroute, Virtual Private Networks (VPN), Internet Service Provider, Python (Programming Language), Network Troubleshooting, Network Layer, Network Configuration and Change Management, Network Architecture, Network Monitoring, Routing, Network Service, Nmap, Ping (Networking Utility), Regression Testing, Cloud Services, Simple Network Management Protocols, Software Deployment, Software Requirements Analysis, Verification and Validation (Software), Syslog, Tcpdump, Test Execution Engine, Wireshark, Virtual Local Area Networks, Wireless Access Point, Wi-Fi Technology, Network Routers, Scripting, Load Balancing, Computer Network Operations, Cloud Platform System, Performance Testing, Test Scripts, Firewalls (Computer Science), Git, Gitlab-ci, Kubernetes, Bug Reporting, Low Latency, Network Server, Docker, Jenkins - **Published:** September 27, 2026 - **Apply:** https://www.adzuna.co.uk/jobs/details/5899754082 ## About the Role * 5+ years of network testing, network verification, telecommunications testing, or network engineering experience * Strong practical knowledge of TCP/IP networking and Layer 2/Layer 3 concepts * Hands-on experience with IPv4/IPv6, subnetting, VLANs, routing, DHCP, DNS, NAT, VPNs, and firewall concepts * Demonstrated experience performing network performance testing, including throughput, latency, jitter, and packet-loss analysis * Strong experience with Wireshark and packet-level troubleshooting * Experience building, configuring, and maintaining network test environments and testbeds * Demonstrated experience developing and executing test plans, test cases, regression tests, and verification procedures * Ability to perform structured root-cause analysis across network, infrastructure, and application layers * Strong technical reporting and documentation skills * Must have the legal right to work in the United Kingdom, * Experience testing LTE/5G, WiFi, broadband, CPE, or telecommunications networks * AWS networking experience involving VPCs, subnets, security groups, route tables, VPNs, and load balancers * DevOps or CI/CD experience using Git, Jenkins, GitLab CI, Azure DevOps, or similar tools * Python or Bash scripting experience for test automation and log processing * Docker and/or Kubernetes exposure * Experience with iPerf, tcpdump, traceroute, ping, Nmap, SNMP, syslog, network monitoring, or traffic-generation tools * Experience with telecom test platforms such as QXDM/QCAT, TEMS, XCAL, Actix, Keysight, or Spirent * Familiarity with VoIP, SIP, RTP, IMS, VoLTE, or VoWiFi * Experience working within telecom operators, ISPs, network equipment vendors, or enterprise network environments ## Description * Plan and execute network verification and validation testing across telecom, broadband, WiFi, and IP-based network environments * Perform functional, integration, regression, interoperability, performance, stability, and end-to-end network testing * Validate network performance including throughput, latency, jitter, packet loss, availability, failover, and service continuity * Configure and troubleshoot IPv4/IPv6, subnetting, VLANs, DHCP, DNS, NAT, routing, VPNs, firewalls, and LAN/WAN connectivity * Configure enterprise IP environments involving routers, switches, access points, gateways, VPN endpoints, servers, and test clients * Test WiFi and broadband connectivity, including gateways, routers, CPE devices, access points, and network performance * Support cellular network testing involving LTE/4G, 5G NSA/SA, mobility, handovers, registration, throughput, and service performance * Capture and analyze network traffic using Wireshark, tcpdump, iPerf, and related packet, protocol, and performance-analysis tools * Troubleshoot network issues across Layer 2 through Layer 7, identifying whether failures originate from configuration, transport, routing, applications, cloud services, or network infrastructure * Build, configure, operate, and maintain repeatable network test environments and testbeds * Create comprehensive test strategies, test plans, test cases, verification procedures, defect reports, RCA documentation, and final test reports * Work with engineering, development, network operations, DevOps, and infrastructure teams to reproduce and resolve defects * Support testing of network services and applications deployed within AWS environments * Validate connectivity between enterprise, telecom, lab, and cloud environments, including hybrid on-premises-to-AWS network paths * Analyze connectivity, latency, routing, DNS, firewall, and access-control issues within cloud-connected test environments * Work within CI/CD-driven test and verification environments * Use Python, Bash, or similar scripting languages for test execution, log processing, configuration, and automation * Integrate network verification activities into automated development and release processes where appropriate * Develop verification strategies based on network and system requirements * Translate technical requirements into measurable test cases, acceptance criteria, and performance benchmarks * Execute positive, negative, boundary, failover, resiliency, and performance testing * Verify network configuration changes, firmware and software releases, and infrastructure updates before production deployment * Perform regression testing following network or software changes * Document defects with sufficient logs, packet captures, reproduction steps, and technical evidence for engineering teams * Track defects through investigation, remediation, retesting, and closure ## Related Videos - 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