Location: Munich, Germany (Onsite)
Employment Type: Full-time
Work Authorization: Candidates must have the legal right to work in Germany (EU citizen or valid German/EU work permit)
Position Overview
Inabia is expanding its telecom engineering presence in Europe and is seeking an experienced Senior LTE/5G Network Test Engineer to support advanced mobile network testing for a telecommunications client in Munich. This role requires strong hands-on experience across 4G/LTE, 5G NR, RAN, Core (EPC/5GC), and IMS/VoLTE, along with expert knowledge of test tools and log analysis.
The ideal candidate brings deep technical understanding of 3GPP standards and can execute end-to-end testing in both lab and field environments.
Key Responsibilities
1. LTE / 5G NR Network & Protocol Testing
- Execute full lifecycle testing: attach, registration, bearer setup, PDU sessions, VoLTE/VoNR call flows
- Validate handover (HO), data performance, throughput, latency, jitter, packet loss
- Conduct KPI evaluations and troubleshoot performance degradations
- Debug issues across gNB/eNB, EPC/5GC (MME, AMF, SMF, UPF), and IMS components
- Analyze protocol behavior across RRC, NAS, SIP, RTP, Diameter
- Collaborate with vendor engineering teams, device OEMs, and operators
- Build/manage test beds including UEs, SIM configurations, APNs, gNB/eNB parameters
- Integrate and maintain testing frameworks and network simulators (Keysight/IXIA/Spirent)
- Ensure environment stability for regression, performance, and interoperability tests
Use advanced telecom tools including:
- QXDM / QCAT / QTRACE
- Wireshark / tcpdump
- Keysight/IXIA, Spirent, Anritsu
- TEMS, X-Cal, Rohde & Schwarz tools
5. Reporting & Collaboration
- Create detailed test cases, test plans, KPI dashboards, and defect reports
- Work closely with cross-functional engineering teams in Germany and internationally
- Provide technical input during planning, integration, and software release cycles
- 5+ years’ experience in LTE/5G network testing or mobile device/network validation
- Strong experience with VoLTE/IMS, RRC/NAS debugging, and core network interactions
- Hands-on proficiency with telecom test tools (QXDM, QCAT, Wireshark, TEMS, X-Cal, Keysight/IXIA)
- Excellent understanding of 3GPP standards for LTE and 5G
- Ability to conduct structured testing in both lab and field environments
- Ability to work onsite in Munich
- Legally authorized to work in Germany (EU citizenship, Blue Card, or valid German work permit)
- Experience with European mobile operators (e.g., Deutsche Telekom, Vodafone, Telefónica/O2)
- OEM device testing (Samsung, Google, Motorola, Xiaomi, etc.)
- Familiarity with private 5G, CBRS-like shared spectrum, or enterprise 5G deployments
- Experience with KPI automation, scripting, or CI/CD testing frameworks
Top Skills
What We Do
WHO
Founded in 2006 and headquartered in Redmond, WA. Our Senior Leadership team has more than 137 years of combined experience in the Telecommunications and Software Industry. Inabia is built on family values and close-knit culture. This commitment extends to the relationships we build with both our employees and our business partnerships.
As a Minority Certified business, we strive to positively impact society through technology, people, and innovation.
WHAT
For over a decade, we have been providing powerful IT and business solutions to individuals and businesses alike. Here at Inabia, we believe that our success reflects our clients’ success.
HOW
We are fortunate to be situated in a city where technology and innovation is not only appreciated; but part of day to day lives. We are a growing company that has adapted and evolved our approach, helping us to exceed the ever-changing needs and requirements of our clients.
WHY
We are a company that fosters and values relationships, as a result many of our clients have been with us from the start of our journey. We ensure that our partners have access to best-in-class professional support, management consulting and staffing services. We make sure our consultants are carefully screened and selected based on their experience. This process ensures that we meet or exceed the specific needs of our clients.
