Posted today · be early
Core Engineer
Webbing
WorldwideremotePosted 1 day ago
Skill Required
Core-Network-EngineeringNetwork-EngineerMobile-Core5G-NetworksMVNO-OperationsCore-EngineeringCore-Engineering-(Tech)Core-Product-EngineerCore-Systems-EngineeringCore-Platform-EngineeringCore-Product-EngineeringDevelopertroubleshootingEngineeringObservabilitysimilar)PythondesignAPIsandFirewallFulltime
Key highlights
- Requires a minimum of 3 years of practical core engineering experience
- Role includes 24x7 on-call duty
- Benefits include meal vouchers and medical insurance
- Must have deep understanding of MNO/MVNO architecture and end-to-end GTP flow design
- Role is a technical and operational position on Webbing's Core Network Engineering team
- Engineers in the role are expected to grow quickly into independent contributors
Role overview
This is a technical and operational role on Webbing’s Core Network Engineering team, where you will work hands-on with the company’s live mobile core infrastructure covering global roaming, MVNO operations, and an active 5G Standalone roadmap. You will troubleshoot real network issues across 3G, 4G, and 5G Standalone, own tickets end-to-end, and lead integrations and projects on the live production network. The fast-paced, focused team takes full end-to-end ownership of all activities, and engineers are expected to grow quickly into independent contributors.
Responsibilities
- Troubleshoot real network issues across 3G, 4G, and 5G Standalone networks
- Own and resolve support tickets end-to-end
- Lead network integrations and projects on the live production network
- Perform hands-on work with Webbing’s live mobile core infrastructure spanning global roaming, MVNO operations, and the 5G-SA roadmap
- Execute integration work between network elements
- Participate in 24x7 on-call duty to respond to live network incidents
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 GTP-C / GTP-U, CUPS (bearer lifecycle, session management, data plane flows), Diameter & Radius (routing, realms, application IDs [Gx, Gy, S6a], AAA flows), and 5G-SA architecture (AMF, SMF, UPF, NRF, PCF) with hands-on or advanced lab experience
- Strong understanding of GRX routing and IPX interconnect operations
- Understanding of roaming processes and procedures including IR.21, IPX, and GRX operations
- Hands-on experience with PGW (configuration, troubleshooting, session management)
- Hands-on experience with PCRF (Gx interface, policy management)
- Hands-on experience with GTP Proxy (GTP-C interception, roaming traffic steering)
- Hands-on experience with Diameter (routing configuration, signaling troubleshooting, analyzing Diameter flows)
- Hands-on experience with Radius (AAA flows, authentication, accounting troubleshooting, analyzing Radius flows)
- Ability to work with monitoring tools
- Ability to design, scale, and integrate a network element into a live network
- Hands-on experience in integration between network elements
- At least 3 years of practical experience as a core engineer
- Familiarity with APIs and basic scripting (Python or similar)
- Ability to work under pressure during live network incidents
- Team player
Benefits
- 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
- Meal Vouchers
- Medical insurance
Additional details
- 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, have the power to whitelist applications and limit non-business applications with the click of a button, saving money and improving compliance
- This role was originally posted on Himalayas