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Open nowFirst seen 9 hours ago

Core Engineer

webbing/46.00e33 open roles

Where
Bucharest, Romania, Remote
Work mode
Remote
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Your applicationOpen nowCore Engineerwebbing/46.00e · Bucharest, Romania, Remote

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Share of postings closed within
  1. 2.0%1 day
  2. 4.3%3 days
  3. 11.5%7 days
  4. 18.1%14 days
  5. 35.6%30 days
  6. 44.6%60 days
This job: first seen 9 hours ago

The posting

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:

  • GTP-C / GTP-U, CUPS - bearer lifecycle, session management, data plane flows
  • Diameter & Radius - routing, realms, application IDs (Gx, Gy, S6a), AAA flows
  • 5G-SA architecture - AMF, SMF, UPF, NRF, PCF — hands-on or advanced lab experience

• Strong understanding of GRX routing and IPX interconnect operations

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

  • Hands-on experience
  • ◦ PGW - configuration, troubleshooting, session management
  • ◦ PCRF- Gx interface, policy management
  • ◦ 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 engineer should have the following skills:

  • Ability to design, scale, and integrate a network element into a live network.
  • Hands-on experience in integration between network elements.
  • Comfortable working under pressure during live network incidents
  • At least 3 years of practical experience as a core engineer.
  • Familiar with APIs and basic scripting (Python or similar).
  • 24x7 On-call duty.
  • 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.
  • Meal Vouchers.
  • Medical insurance.
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