Senior Gateway Engineer: 5G Core & Packet Networks

astspacemobile; Dallas (TX); On-site; USD 140,000 - 210,000; Full time

Job summary

AST SpaceMobile is seeking a Principal Gateway Engineer to design, deploy, and optimize packet core gateway infrastructure across 4G/5G networks. You will work with radio access, core network, IMS, device, and platform teams to ensure reliable connectivity and service performance.

The ideal candidate will have deep LTE and 5G core expertise, hands-on troubleshooting experience, and a strong understanding of signaling protocols, end‑to‑end service flows, and network operations.

Qualifications

• Minimum 3-7 years of experience in cellular core network engineering, packet core operations, telecommunications engineering, or network systems testing.
• Hands-on experience supporting LTE/EPC and/or 5G Core network environments.
• Experience troubleshooting signaling, subscriber connectivity, mobility, and data session issues in production environments.
• Experience performing network upgrades, change management activities, and operational support functions.
• Working knowledge of mobile network architecture and end-to-end service flows.

Responsibilities

• Configure and optimize packet core gateway functions for subscriber connectivity and data sessions.
• Analyze signaling and traces to resolve session establishment failures and mobility events.
• Troubleshoot network issues across gateway, radio, device, and subscriber data.
• Monitor KPIs: session success, throughput, latency, availability.
• Support upgrades, features, capacity expansions, maintenance planning and testing.
• Collaborate with vendors to validate fixes and coordinate releases.
• Support roaming and multi-technology interop with partner networks.
• Develop automation tools for configuration validation and log analysis.
• Create and maintain runbooks, SOPs, and incident reports.
• Participate in production support and on-call for incidents.
• Coordinate with cross-functional teams to define requirements and improve performance.
• Provide technical leadership and mentorship.

Skills

LTE/EPC

5G Core

Packet Core

Troubleshooting

Cross-functional Collaboration

Problem Solving

Documentation

Education

Bachelor's degree in Electrical Engineering, Computer Science, Telecommunications, Information Technology, or a related technical field

Job description

AST SpaceMobile is seeking a Principal Gateway Engineer to design, deploy, and optimize packet core gateway infrastructure across 4G/5G networks. You will work with radio access, core network, IMS, device, and platform teams to ensure reliable connectivity and service performance.

The ideal candidate will have deep LTE and 5G core expertise, hands-on troubleshooting experience, and a strong understanding of signaling protocols, end‑to‑end service flows, and network operations.