5G Telecom Engineer

LUXUAV is an innovative technology company headquartered in Luxembourg , shaping next-generation airspace security for defence, civil, firefighting and police missions. We build a fully integrated Unmanned Aerial Vehicles (UAVs) ecosystem that connects mission systems across ground, air, and stratosphere into one coherent governmental and commercial architecture.

Role overview: We are building compact airborne-based communication platforms. We are looking for a permanent, hands-on engineer to lead the design and development of these nodes: the radio stack on SDR, the RF integration, and the networking around it. This is a technical lead role, not a management one. You own the build. Programme, customer, and stack shortlist are shared during the interview process.

Key Responsibilities

• Design, build, and integrate the software-defined 5G NR/LTE node on SDR hardware, from the RF front-end through L1/L2 to an onboard core.
• Own SDR bring-up and RF integration: SDR platforms, PA, filtering, and antenna chain, TDD timing, and calibration.
• Configure and extend the RAN stack (srsRAN, OpenAirInterface, or a commercial equivalent) and integrate the mobile core (5GC/EPC).
• Design and implement the networking: IP routing, gateways, backhaul, and mesh-to-5G interconnect, with end-to-end connectivity and performance.
• Collaborate with the RF/array specialist on integrating the RF front-end, including phased-array options, into the node at the array-to-L1 boundary.
• Stand up bench and hardware-in-the-loop test, measure and optimise throughput, latency, and coverage, and drive the node from lab to field trials

Qualifications & Experience

Must have

• Hands-on industrial experience developing and integrating 4G/5G RAN systems, not research-only.
• Very strong SDR skills: USRP-class or similar hardware and software-RAN (srsRAN, OpenAirInterface, or commercial), including RF front-end integration.
• Solid network engineering: IP routing, 5GC/EPC, transport and backhaul, and the ability to design and debug end-to-end.
• Strong C/C++ for real-time and embedded systems, with Python for automation and test.
• Working knowledge of 5G NR/LTE L1/L2 and O-RAN architecture (Open Fronthaul 7-2x, O1, and the FAPI PHY-MAC API), enough to integrate and optimise.
• English at upper-intermediate level or above, and the ability to work with adjacent engineering teams.
• Clean criminal record.

Nice to have

• RF, antenna, and phased-array familiarity.
• Mesh networking (MANET) and secure transport (VPN, SD-WAN).
• Airborne, UAV, aerial-relay, or NTN experience.
• EU spectrum and regulatory familiarity.
• Track record taking a node from prototype to field trials
• National from a NATO member country or one of the following NATO Indo-Pacific partners: Australia, Japan, South Korea, New Zealand or Ukraine.

If this sounds like an opportunity that interests you, please send us your application. We look forward to hearing from you!

*Please note that only shortlisted candidates will be contacted.