Core Engineer
Core
Troubleshoot real network issues across 3G, 4G, and 5G Standalone, own tickets end-to-end, and lead integrations on a live production mobile core infrastructure.
Role type
Senior IC Core Network Engineer
Builds
Live mobile core infrastructure for global roaming and MVNO operations
Domain
Telecommunications / Mobile Core Networking
Required skills
MNO/MVNO architecture, 3GPP standards (2G/3G/4G/5G), GTP-C/GTP-U, CUPS bearer lifecycle, Diameter & Radius flows, 5G-SA architecture (AMF/SMF/UPF/NRF/PCF), GRX routing, IPX interconnect, roaming procedures (IR.21), PGW configuration, PCRF policy management, GTP Proxy, monitoring tools, Python scripting
Preferred skills
Advanced lab experience with 5G-SA, experience analyzing Diameter and Radius flows, API design
Technologies
3GPP, GTP-C, GTP-U, CUPS, Diameter, Radius, 5G-SA, AMF, SMF, UPF, NRF, PCF, PGW, PCRF, GTP Proxy, GRX, IPX, Python
Responsibilities
Troubleshoot live network incidents across 3G/4G/5G, own tickets end-to-end, lead integrations of network elements, design and scale network elements, perform 24x7 on-call duty (via careerplan.io/jobs/46-00E-F5-D6D-core-engineer-at-webbing)
Seniority
Senior, hands-on IC