Senior Core Network Engineer: 5G-SA & Roaming

Webbing USA Inc.; United States; Remote; USD 150,000 - 190,000; Full time

Benefits offered by this job

Skill development

International environment

Career growth

Job summary

Webbing is seeking a Core Network Engineer to join the Core Network Engineering team, working hands-on with our live mobile core infrastructure spanning global roaming, MVNO operations, and a 5G-SA roadmap.

The role is technical and operational. You will troubleshoot real network issues across 3G, 4G, and 5G Standalone, own tickets end-to-end, and lead integrations and projects on a live production network. Engineers here are expected to grow quickly into independent contributors.

Qualifications

• Deep understanding of MNO/MVNO architecture and end-to-end GTP flow design.
• Familiar with 3GPP standards across 2G/3G/4G and 5G SA.
• Experience with GTP-C, Diameter, Radius, IPX/GRX interconnects.
• Experience with roaming processes (IR.21) and roaming operations.
• Comfortable designing and scaling network elements for live networks.
• At least 3 years of practical experience as a core engineer.
• Familiar with APIs and basic scripting (Python or similar).

Responsibilities

• Troubleshoot real network issues across 3G/4G/5G and own tickets end-to-end.
• Lead integrations and projects on a live production network.
• Design, scale, and integrate a network element into a live network.
• Work under pressure during live network incidents.
• Collaborate within a focused, ownership-driven team.

Skills

Core network engineering

Roaming operations

3GPP standards knowledge

Scripting (Python)

API familiarity

Troubleshooting under pressure

End-to-end ticket ownership

Monitoring tools

Tools

Monitoring tools

Job description

Webbing is seeking a Core Network Engineer to join the Core Network Engineering team, working hands-on with our live mobile core infrastructure spanning global roaming, MVNO operations, and a 5G-SA roadmap.

The role is technical and operational. You will troubleshoot real network issues across 3G, 4G, and 5G Standalone, own tickets end-to-end, and lead integrations and projects on a live production network. Engineers here are expected to grow quickly into independent contributors.