Senior Network Test Engineer

Overview

Inabia is seeking a Senior Network Test Engineer based in the United Kingdom to lead end-to-end network verification performance testing troubleshooting and validation across cellular WiFi broadband IP networking and cloud-connected environments. This role requires a hands-on engineer with deep expertise in IP networking AWS cloud connectivity DevOps practices and test automation. The successful candidate will configure and manage test environments execute functional and performance testing analyze network traffic and logs identify root causes and produce comprehensive test and verification reports.

Responsibilities

• 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

Key Qualifications

• 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

Preferred Qualifications

• 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