Sr. Phased Array & RAN Validation Engineer, LEO Antenna Test Infrastructure
Core
End-to-end validation of satellite-based gNB across O-RAN protocol layers and integration with phased array antenna beam pattern testing for LEO satellite connectivity.
Role type
Senior IC RAN Validation & Phased Array Antenna Test Engineer
Builds
Satellite-to-mobile network verification for Kuiper constellation
Domain
Aerospace telecommunications / 5G NTN / O-RAN
Deliverable
production ML models | product features | dashboards & analysis | research | client delivery | infrastructure | physical/clinical work
Required skills
O-RAN architecture (O-CU, O-DU, O-RU), 3GPP 5G NR protocol stack, RF theory and microwave circuit fundamentals, RF test instrumentation (R&S CMX500, Keysight UXM), Python for test automation, Linux, UE log analysis tools, protocol analyzers
Preferred skills
Phased array antenna testing (OTA, beam pattern, near-field), 3GPP 5G NTN standards (Rel-17/18), O-RAN conformance testing, 3GPP 38-141, near-field spherical scanning, robotic antenna measurement systems, 5G NR channel models with LEO Doppler profiles
Technologies
O-RAN, 3GPP, Python, Linux, R&S CMX500, Keysight UXM, Wireshark, QXDM, XCAL, XCAP
Responsibilities
Validate 4G/5G RAN protocol stack across O-RAN layers; Integrate phased array antenna beam pattern characterization with gNB protocol-level testing; Correlate beam pattern measurements with RAN KPIs; Perform Tx/Rx conformance testing per 3GPP 38-141 adapted for NTN; Develop end-to-end system validation procedures; Adapt RAN validation campaigns to aerospace DVT/QTP/ATP frameworks; Analyze UE and gNB logs to debug issues at PHY/MAC/RLC/PDCP/RRC layers; Validate O-RAN fronthaul interface conformance; Operate signalling testers for protocol conformance; Build tools to analyze RAN performance and optimize gNB KPIs; Develop automated test frameworks and maintain RAN lab infrastructure
Seniority
Senior, hands-on IC
