The Key Responsibilites:
- 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.
- You will 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
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.
- Salary level: 1400-1600 EUR gross per month
- Social benefits
- 200 EURO monthly Wolt food allowance
- Medical insurance
- Free mobile services with Tele2
- Car parking spot
