Sr. Network Test Engineer Cellular, WiFi & Broadband

Munich - Germany

Hourly Salary: EUR 47 - 52

Posted on: 30+ days ago

Vacancies: 1 Vacancy

Job Summary

Location: Munich Germany (Onsite Full-Time)
Employment Type: Permanent
Work Authorization: Must possess the legal right to work in Germany (e.g. EU citizen German work permit EU Blue Card).

Position Overview
Inabia is seeking a highly skilled Senior Network Test Engineer to support advanced testing across 5G/LTE WiFi and broadband/IP networking environments for a telecommunications client in Munich.
This position combines wireless test engineering with enterprise and broadband networking skills requiring hands-on experience validating radio IP networking and CPE/gateway performance in both lab and field conditions.
Candidates with strong LTE/5G RAN or drive-testing backgrounds who can learn broadband/IP quickly are encouraged to apply.

Key Responsibilities
Wireless (LTE/5G/WiFi) Testing

Perform end-to-end testing for LTE LTE-A 5G NSA/SA and WiFi 5/6/6E.
Validate attach/registration CA EN-DC VoLTE/VoWiFi VoNR handovers fallback and mobility scenarios.
Conduct throughput latency jitter and packet-loss testing using standardized benchmarking methods.
Analyze RAN KPIs and troubleshoot coverage mobility capacity and interference issues.

Broadband & CPE/Gateway Validation

Test residential and enterprise broadband devices including routers gateways mesh WiFi systems CPEs modems and home networking equipment.
Execute performance reliability and stability tests on broadband/WAN connectivity (fiber DSL wireless broadband Ethernet backhaul).
Validate LAN/WAN configuration workflows device onboarding and end-to-end connectivity.

IP Networking Routing & VPN Testing

Configure and test IPv4/IPv6 addressing subnetting VLANs DHCP DNS NAT port forwarding and firewall rules.
Validate VPN tunnel setup and performance (IPsec SSL WireGuard OpenVPN).
Troubleshoot routing DNS resolution issues gateway conflicts and Layer 2/Layer 3 connectivity.
Use diagnostic tools such as Wireshark tcpdump traceroute iPerf and system logs for L2L7 debugging.

Testbed Setup & Environment Ownership

Build and maintain lab environments combining 5G/LTE devices broadband routers switches servers VPN endpoints and test automation tools.
Ensure test repeatability through proper documentation version control and environmental consistency.
Integrate new firmware OS builds APNs SIM profiles and network parameters for testing cycles.

Tools & Log Analysis

Use tools such as TEMS X-Cal Actix QXDM/QCAT Wireshark tcpdump iPerf spectrum analyzers and vendor-specific utilities.
Perform advanced log analysis of RRC NAS SIP RTP/RTCP and system logs to identify root causes across wireless & IP layers.
Validate compliance with KPI requirements feature acceptance criteria and field performance goals.

Reporting & Collaboration

Develop clear test plans defect reports KPI dashboards and RCA summaries.
Collaborate with RAN engineering teams broadband development teams device OEMs and network operators.
Provide input for feature validation firmware improvements and field issue reproduction.

Required Qualifications

Experience in LTE/5G and/or WiFi network testing broadband CPE testing or IP networking validation.
Strong understanding of IP networking principles (subnetting routing VLANs NAT firewall rules DHCP DNS).
Hands-on experience with test tools (e.g. Wireshark iPerf tcpdump TEMS X-Cal Actix QXDM).
Able to build configure and troubleshoot complex testbeds across wireless and IP domains.
Strong analytical and troubleshooting skills across RF IP and application layers.
Excellent documentation and communication skills.

Preferred Qualifications

Experience with German or EU mobile operators (Telekom Vodafone O2 1&1) or broadband ISPs.
Experience testing home networking devices broadband gateways WiFi APs or mesh systems.
Familiarity with enterprise-grade networking (Cisco Juniper Aruba Fortinet Ubiquiti).
Knowledge of VoLTE/IMS/SIP analysis or VoWiFi/VoNR testing.
Python or automation scripting experience.

Required Experience:

Senior IC

Location: Munich Germany (Onsite Full-Time)Employment Type: PermanentWork Authorization: Must possess the legal right to work in Germany (e.g. EU citizen German work permit EU Blue Card).Position OverviewInabia is seeking a highly skilled Senior Network Test Engineer to support advanced testing acro...

Perform end-to-end testing for LTE LTE-A 5G NSA/SA and WiFi 5/6/6E.
Validate attach/registration CA EN-DC VoLTE/VoWiFi VoNR handovers fallback and mobility scenarios.
Conduct throughput latency jitter and packet-loss testing using standardized benchmarking methods.
Analyze RAN KPIs and troubleshoot coverage mobility capacity and interference issues.

Broadband & CPE/Gateway Validation

Test residential and enterprise broadband devices including routers gateways mesh WiFi systems CPEs modems and home networking equipment.
Execute performance reliability and stability tests on broadband/WAN connectivity (fiber DSL wireless broadband Ethernet backhaul).
Validate LAN/WAN configuration workflows device onboarding and end-to-end connectivity.

IP Networking Routing & VPN Testing

Configure and test IPv4/IPv6 addressing subnetting VLANs DHCP DNS NAT port forwarding and firewall rules.
Validate VPN tunnel setup and performance (IPsec SSL WireGuard OpenVPN).
Troubleshoot routing DNS resolution issues gateway conflicts and Layer 2/Layer 3 connectivity.
Use diagnostic tools such as Wireshark tcpdump traceroute iPerf and system logs for L2L7 debugging.

Testbed Setup & Environment Ownership

Build and maintain lab environments combining 5G/LTE devices broadband routers switches servers VPN endpoints and test automation tools.
Ensure test repeatability through proper documentation version control and environmental consistency.
Integrate new firmware OS builds APNs SIM profiles and network parameters for testing cycles.

Tools & Log Analysis

Use tools such as TEMS X-Cal Actix QXDM/QCAT Wireshark tcpdump iPerf spectrum analyzers and vendor-specific utilities.
Perform advanced log analysis of RRC NAS SIP RTP/RTCP and system logs to identify root causes across wireless & IP layers.
Validate compliance with KPI requirements feature acceptance criteria and field performance goals.

Reporting & Collaboration

Develop clear test plans defect reports KPI dashboards and RCA summaries.
Collaborate with RAN engineering teams broadband development teams device OEMs and network operators.
Provide input for feature validation firmware improvements and field issue reproduction.

Required Qualifications

Experience in LTE/5G and/or WiFi network testing broadband CPE testing or IP networking validation.
Strong understanding of IP networking principles (subnetting routing VLANs NAT firewall rules DHCP DNS).
Hands-on experience with test tools (e.g. Wireshark iPerf tcpdump TEMS X-Cal Actix QXDM).
Able to build configure and troubleshoot complex testbeds across wireless and IP domains.
Strong analytical and troubleshooting skills across RF IP and application layers.
Excellent documentation and communication skills.

Preferred Qualifications

Experience with German or EU mobile operators (Telekom Vodafone O2 1&1) or broadband ISPs.
Experience testing home networking devices broadband gateways WiFi APs or mesh systems.
Familiarity with enterprise-grade networking (Cisco Juniper Aruba Fortinet Ubiquiti).
Knowledge of VoLTE/IMS/SIP analysis or VoWiFi/VoNR testing.
Python or automation scripting experience.

Required Experience:

Senior IC

Key Skills

Academics
Football
Bluetooth
Fabrication
Claims Investigation
Event Marketing

Apply Now

About Company

Inabia Software & Consulting

The following are the open positions for which we are currently accepting resumes. This space is regularly updated, so please check back. You can also use the general applicant form to submit your resume. We will keep it on our databases when something appropriate for your background ... View more

View Profile View Profile

AI AutoApply

Apply to 100+ jobs with one click