Senior RF Systems Integration and Test Engineer, RF and 3GPP NTN, Amazon Leo

Key job responsibilities

• Integrate RF payload hardware, modems, antennas, Open RAN components, 5G Core, IMS, and lab infrastructure into end to end validation environments.
• Execute RF, OTA, chamber, HIL, modem, and system level tests for NTN and satellite terrestrial network validation.
• Validate 3GPP Release 17 NTN behavior from an RF systems perspective, including synchronization, timing, mobility, Doppler, link quality, beam behavior, and service continuity.
• Correlate RF impairments with protocol and service behavior, including attach, registration, PDU session setup, handover, VoNR, IMS registration, throughput, latency, and packet loss.
• Support Open RAN integration across CU, DU, RU, gNodeB, RF front end, payload hardware, and 5G Core interfaces.
• Use spectrum analyzers, vector signal analyzers, signal generators, channel emulators, RF chambers, OTA setups, and protocol traces to isolate failures.
• Drive root cause on cross domain issues spanning RF hardware, antenna behavior, modem software, RAN configuration, Core behavior, timing, and lab infrastructure.
• Develop integration test procedures, readiness gates, regression coverage, and defect reports for RF plus 3GPP system validation.
• Collaborate with RF, antenna, modem, payload, RAN, Core, network, software, and operations teams to qualify production bound satellite communications capabilities.

Basic Qualifications

• Bachelor's degree in Electrical or Communications Engineering or a related field
• 7+ years of experience in RF systems integration, wireless validation, modem validation, OTA testing, or cellular lab test experience.
• Strong understanding of RF communications fundamentals, including link budgets, SNR, EVM, ACLR, gain, noise figure, linearity, synchronization, fading, interference, and antenna behavior.
• Knowledge of 3GPP Release 17 NTN concepts and ability to connect standards behavior to RF and system level validation.
• Experience integrating or testing Open RAN, gNodeB, CU, DU, RU, modem, RF front end, or 5G Core systems.
• Experience with VoNR and IMS is desirable, especially the ability to understand how RF and mobility behavior impacts service continuity.
• Experience with RF lab equipment such as spectrum analyzers, signal generators, vector signal analyzers, power meters, channel emulators, chambers, or OTA systems.
• Ability to analyze logs, packet captures, RF measurements, modem traces, and system telemetry to debug end to end failures.
• Linux proficiency and comfort working directly in a lab environment with hardware, test equipment, and automated test systems.

Preferred Qualifications

• Experience with LEO satellite payloads, NTN, space to ground links, phased arrays, beamforming, or satellite communications systems.
• Experience with Release 18 NTN, advanced mobility, beam management, or satellite specific 5G extensions.
• Experience with RF chamber testing, OTA validation, channel modeling, Doppler emulation, timing validation, or link performance testing.
• Experience with Keysight, Rohde and Schwarz, Anritsu, LitePoint, Spirent, Viavi, or similar RF and wireless test platforms.
• Experience with Open RAN, MOCN, MORAN, Multi PLMN, IMS, VoNR, and carrier interoperability testing.
• Python scripting experience for instrument control, test automation, data analysis, log parsing, or automated report generation.
• Ability to clearly explain whether a failure is driven by RF conditions, modem behavior, RAN configuration, Core behavior, lab setup, or standards interpretation.
• Experience producing concise readiness reports, defect evidence packages, and cross functional debug summaries.