IREG Team Lead – Roaming and Service Validation Testing

About the role

Webbing, a global data MVNO providing enterprise connectivity and IoT services, is looking for an IREG Team Lead. The IREG team owns Webbing's roaming and service-validation testing, validating new roaming relations, IMSI/MSISDN ranges, eSIM connectivity, APN/PGW policies and new products before or during launch. The role coordinates tests with roaming partners, sponsors and vendors, records results and escalates issues, and works under the NOC management framework.

Key responsibilities

• Own end-to-end internal service-validation and roaming/interworking testing requests
• Coordinate and run Direct and Sponsored roaming tests with partners and sponsors
• Manage IREG test books and roaming test evidence, including IR.24, IR.35, IR.38, IR.32 and IR.25
• Run eSIM order connectivity, IMSI sponsor/range, MSISDN range, new sponsor network, new product and service, and PGW/APN policy tests
• Handle service readiness for new services, migrations, sponsor footprints and GRX/IPX validations
• Monitor and track IREG requests on the NOC/IREG Monday board
• Mentor IREG engineers, support onboarding, identify knowledge gaps and promote knowledge sharing

Required profile

• Higher education in Telecommunications, Electronics, Electrical Engineering, IT or a related field; incomplete degree possible with relevant experience
• 3-5 years in telecommunications, mobile networks, roaming, IREG, NOC or service assurance
• Previous IREG, Senior NOC, Roaming, Service Assurance or similar engineer role
• Experience coordinating technical activities or projects is strongly preferred; team lead or mentoring experience is an advantage
• Fluent written and spoken English, with clear technical writing

Required skills

• GSM/UMTS/LTE/IMS architecture and international roaming principles
• 2G/3G/4G and preferably 5G service flows; voice, SMS, packet data, CAMEL, LTE, VoLTE roaming
• MAP, CAP, Diameter, SS7, SIGTRAN, GTP, DNS, IP, HLR/HSS, EPC and roaming steering
• Analyzing signaling traces and GSMA roaming standards and IREG processes
• IREG testing platforms, network monitoring, signaling analysis, ticketing, reporting and test-management tools
• Automation with vibe-coding and Agentic AI is an advantage

What we offer

• Salary of 3,200-3,600 EUR gross, with extra pay for night shifts and public holidays
• 200 EUR monthly Wolt food allowance, medical insurance, free Tele2 mobile services and car parking
• Team events and professional development in an international environment