Network Development Engineer, 5G NTN Network Integration and Test, Amazon Leo

Amazon Leo is building a Low Earth Orbit satellite constellation to deliver high speed low latency broadband connectivity to unserved and underserved communities around the world. As part of Payload Integration and Test this role is focused on hands on integration validation troubleshooting and qualification of end to end satellite communications systems across space ground RF modem RAN Core transport and cloud infrastructure. The work is lab centered and system focused. The role is not a software development position but the ability to use Linux Python protocol traces packet captures and automation to debug complex systems is highly valuable.

Export Control Requirement
Due to applicable export control laws and regulations candidates must be a U.S. citizen or national U.S. permanent resident that is a current Green Card holder or lawfully admitted into the U.S. as a refugee or granted asylum.


Key job responsibilities
This role owns the network integration path between Open RAN 5G Core IMS transport lab infrastructure and satellite payload test systems. The candidate should be able to debug across CU DU RU gNodeB Core routing switching tunnels packet captures and lab hardware without needing the problem to be pre isolated by another team.

Key Job Responsibilities
Integrate and validate end to end network connectivity across Open RAN gNodeB 5G Core IMS transport and LEO satellite test systems.
Validate 3GPP Release 17 NTN behaviors from a network integration perspective including attach registration bearer setup user plane mobility and service continuity.
Integrate and test Open RAN architecture components including CU DU RU F1 E1 Xn and gNodeB connectivity into lab and payload environments.
Validate VoNR and IMS call flows including registration SIP signaling media path QoS emergency call behavior where applicable and failure recovery.
Troubleshoot NGC NGU NGAP GTP U SCTP PFCP VLANs routing MPLS Segment Routing QoS MTU timing and user plane performance issues.
Build and execute integration regression interoperability failover resiliency and performance test plans for lab and HIL environments.
Use packet captures protocol logs Linux tools telemetry and system traces to drive root cause across RF RAN Core payload transport and cloud teams.
Partner with RF modem payload Core RAN software and systems teams to define pass fail criteria and drive issues from ambiguous system behavior to clear resolver ownership.
Support readiness reviews test reports and operational handoff for production bound satellite terrestrial network capabilities.


- Associates degree or above
- 5 years experience integrating testing or operating LTE or 5G networks in lab carrier vendor or large scale production environments.
- Strong practical knowledge of 3GPP network architecture including RAN to Core interfaces and 5G user plane and control plane flows.
- Experience with Open RAN or disaggregated RAN architecture including CU DU RU gNodeB integration and related interfaces.
- Knowledge of 3GPP Release 17 NTN concepts and ability to apply standards knowledge during integration and troubleshooting.
- Experience with VoNR and IMS protocols including SIP RTP registration call setup media path validation and failure analysis.
- Strong Linux networking skills and ability to troubleshoot routing interfaces packet captures firewalls tunnels timing and performance.
- Experience with Wireshark or equivalent tools for packet and protocol analysis.
- Experience working in hands on lab environments with physical infrastructure HIL setups network equipment and multi team debug.

- Experience with LEO satellite communications NTN or space to ground network integration.
- Experience with 3GPP Release 18 NTN or emerging NTN standards.
- Experience with MOCN MORAN Multi PLMN broadcast PLMN operations network slicing or shared RAN deployments.
- Experience with Cisco Juniper Arista MikroTik or comparable routing and switching platforms.
- Experience with MPLS Segment Routing EVPN VXLAN BGP OSPF IS IS QoS and high availability transport design.
- Python scripting experience for test automation log parsing packet analysis or lab tooling.
- Experience with Kubernetes cloud networking CI based regression or automated lab orchestration.
- Experience producing clear test reports defect summaries and executive ready readiness assessments.

Amazon is an equal opportunity employer and does not discriminate on the basis of protected veteran status disability or other legally protected status.

Our inclusive culture empowers Amazonians to deliver the best results for our customers. If you have a disability and need a workplace accommodation or adjustment during the application and hiring process including support for the interview or onboarding process please visit for more information. If the country/region youre applying in isnt listed please contact your Recruiting Partner.

The base salary range for this position is listed below. Your Amazon package will include sign-on payments and restricted stock units (RSUs). Final compensation will be determined based on factors including experience qualifications and location. Amazon also offers comprehensive benefits including health insurance (medical dental vision prescription Basic Life & AD&D insurance and option for Supplemental life plans EAP Mental Health Support Medical Advice Line Flexible Spending Accounts Adoption and Surrogacy Reimbursement coverage) 401(k) matching paid time off and parental leave. Learn more about our benefits at WA Redmond - 136000.00 - 184000.00 USD annually