5G NTN Network Integration Engineer – Lab & Test

Amazon Inc.; Redmond (WA); On-site; USD 136,000 - 184,000; Full time

Benefits offered by this job

Health insurance

401(k) matching

Paid time off

Parental leave

Job summary

Amazon Leo is building a Low Earth Orbit satellite constellation to deliver high speed, low latency broadband connectivity. This Network Development Engineer role focuses on hands-on integration, validation, troubleshooting, and qualification of end-to-end satellite communications across space, ground, RF, RAN, Core, transport, and cloud.

The role emphasizes lab-centered work, debugging with Linux, Python, protocol traces, and packet captures to resolve complex systems.

Qualifications

• Associate's 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.
• Knowledge of 3GPP Release 17 NTN concepts and ability to apply standards knowledge during integration.
• 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.

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.

Skills

Linux networking

Packet analysis

Wireshark

Python scripting

Open RAN

5G/LTE networks

Education

Associate's degree or above

Tools

Cisco

Juniper

Arista

MikroTik

Job description

Amazon Leo is building a Low Earth Orbit satellite constellation to deliver high speed, low latency broadband connectivity. This Network Development Engineer role focuses on hands-on integration, validation, troubleshooting, and qualification of end-to-end satellite communications across space, ground, RF, RAN, Core, transport, and cloud.

The role emphasizes lab-centered work, debugging with Linux, Python, protocol traces, and packet captures to resolve complex systems.