> Markdown version of [/jobs/ext/1744984-3gpp-ntn-systems-integration-and-test-engineer-amazon-leo](https://www.wearedevelopers.com/jobs/ext/1744984-3gpp-ntn-systems-integration-and-test-engineer-amazon-leo). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # 3GPP NTN Systems Integration and Test Engineer, Amazon Leo - **Company:** Amazon.com, Inc. - **Location:** Austin, TX, United States - **Experience:** Expert - **Salary:** $136,000.0 - $184,000.0 - **Contract:** Permanent contract - **Skills:** LTE (Telecommunication), Automation of Tests, Code Coverage, Protocol Stack, Modems, Software Debugging, Linux, Interoperability, Log Analysis, Packet Analyzer, Systems Integration, Strategies of Testing, Scripting, Stream Control Transmission Protocol - **Published:** July 3, 2026 - **Apply:** https://www.amazon.jobs/en/jobs/10465265/3gpp-ntn-systems-integration-and-test-engineer-amazon-leo ## About the Role Associate's degree or above - 5+ years experience on LTE or 5G protocol validation, systems integration, conformance, interoperability, or protocol stack troubleshooting experience. - Deep knowledge of 3GPP Release 17, with specific understanding of NTN behavior and satellite related protocol impacts. - Strong understanding of RRC, NAS, NGAP, F1AP, E1AP, XnAP, PDCP, RLC, MAC, GTP U, SCTP, QoS, mobility, and bearer management. - Experience with Open RAN architecture, including CU, DU, RU, gNodeB behavior, and disaggregated RAN integration. - Experience with VoNR and IMS protocols, including registration, SIP signaling, RTP media, call setup, call release, and failure handling. - Experience analyzing protocol logs and packet captures to determine root cause across RAN, Core, IMS, UE, modem, and network elements. - Experience designing test plans, regression coverage, conformance validation, and interoperability validation in a lab environment. - Linux proficiency and ability to work directly with test equipment, logs, scripts, and lab systems, Experience with LEO, satellite communications, NTN test systems, or satellite terrestrial network integration. - Experience with 3GPP Release 18 NTN, emerging NTN work items, or standards body participation. - Experience with MOCN, MORAN, Multi PLMN broadcast, PLMN selection, shared RAN, and carrier interoperability. - Experience validating emergency services, roaming, slicing, IMS services, QoS, policy control, or carrier acceptance requirements. - Experience with Keysight, Anritsu, Rohde and Schwarz, Amarisoft, Spirent, Viavi, or comparable protocol and conformance tools. - Python scripting experience for protocol log parsing, automated test verdicts, or coverage analysis. - Ability to mentor engineers who are strong in RF, networking, or lab execution but less experienced in 3GPP protocol detail. - Experience building trace based defect narratives that clearly separate symptoms, evidence, standards references, and suspected owner. ## Description This role owns 3GPP interpretation and protocol validation for PIT. The candidate should be able to translate 3GPP requirements into lab tests, identify gaps in implementation or test coverage, and determine whether failures are standards, implementation, configuration, interoperability, or environment related., * Lead 3GPP protocol validation for Release 17 NTN features across RAN, Core, IMS, mobility, bearer management, and service continuity. * Define test strategies and pass fail criteria for RRC, NAS, NGAP, XnAP, F1AP, E1AP, PDCP, RLC, MAC, GTP U, IMS, SIP, RTP, and VoNR procedures. * Interpret 3GPP specifications and convert standards requirements into executable integration, regression, conformance, and interoperability test cases. * Validate Open RAN behavior across CU, DU, RU, gNodeB, 5G Core, and IMS systems in lab, HIL, OTA, and end to end environments. * Drive deep debug of protocol failures including registration, attach, PDU session setup, handover, cell reselection, bearer setup, QoS, IMS registration, and VoNR call setup. * Analyze protocol logs, packet captures, vendor traces, modem traces, RAN traces, Core traces, and RF correlated failures to identify root cause. * Partner with architecture, standards, RAN, Core, RF, modem, software, payload, and operations teams to close standards compliance and interoperability gaps. * Track industry evolution across Release 17, Release 18, NTN, Open RAN, IMS, VoNR, MOCN, MORAN, and Multi PLMN deployments. * Produce clear test coverage maps, defect narratives, readiness summaries, and risk assessments for leadership and technical stakeholders. ## Related Videos - [Code meets connectivity - Developers as the powerhouse of Network API innovation](https://www.wearedevelopers.com/videos/1686-code-meets-connectivity-developers-as-the-powerhouse-of-network-api-innovation) - [Docker network without Docker](https://www.wearedevelopers.com/videos/1418-docker-network-without-docker) - [JavaScript? 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