Core Engineer

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

You will join the Core Network Engineering team at Webbing, working hands-on with our live mobile core infrastructure spanning global roaming, MVNO operations, and an active 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.

We are a focused team that moves fast and takes full ownership of activities end to end.

Engineers here are expected to grow quickly into independent contributors

REQUIREMENTS

Deep understanding of MNO/MVNO architecture and end-to-end GTP flow design

Complete familiarity with 3GPP standards across 2G/3G/4G and 5G, including:

• 5G-SA architecture - AMF, SMF, UPF, NRF, PCF — hands-on or advanced lab experience

Strong understandingof GRX routing and IPX interconnect operations

Understanding of roaming processes and procedures: IR.21,IPX, and GRX operations

• GTP Proxy - GTP-C interception, roaming traffic steering
• Diameter - routing configuration, signaling troubleshooting, experience analyzing Diameter flows.
• Radius - AAA flows, authentication, and accounting troubleshooting, experience analyzing Radius.
• Understanding of roaming processes and procedures (IR.21, familiarity with IPX and GRX operations).
• Working with monitoring tools

Our engineershould have the following skills:

• Ability to design, scale, and integrate a network element into a live network.
• Comfortable working under pressure during live network incidents
• At least 3years of practical experience as a core engineer.
• Familiar with APIs and basic scripting (Python or similar).
• Team player

ABOUT WEBBING

Founded in early 2010, Webbing is a global data MVNO that delivers enterprise grade, global connectivity and IoT services across more than 200 countries and 600+ mobile carriers' networks. Webbing's secured network delivers network protection and web content intelligence.

Enterprise customers can manage, monitor, and optimize data usage in real-time with Webbing's powerful software platform. Gain visibility by application type and have the power to white list applications and limit non-business applications with the click of a button, saving money and improving compliance.

WHAT WE OFFER

• An exciting and challenging workplace with great skill and knowledge development opportunities.
• The opportunity to join a team of highly professional specialists in an international environment.
• The opportunity for professional development within a reputable international innovative and growing company.