8-12 years of experience in mobile core, roaming architecture, interconnect services, or international mobility.Strong expertise across roaming technologies such as S8HR, LBO, IPX connectivity, Diameter, SIP, MAP/CAMEL, and EPC/5GC interfaces (S6a, S8, S9, N26, N9, SEPP). Deep understanding of international roaming flows, service security, and GSMA/3GPP compliance. Proven experience leading multi-market roaming deployments or complex cross-operator programmes. Strong collaboration background with GSMA, 3GPP, vendors, and international operators. Bachelor's degree in Telecommunications, Electronics, Computer Engineering, or a related discipline.Solid foundation in mobile core network design, roaming integration, and international service delivery. Not a Perfect Fit? If you are excited about this role but your experience does not align exactly with every aspect of the job description, you are encouraged to apply. You may be the right candidate for this or another opportunity, and the recruitment team will support you in exploring where your skills fit best. What skills you will learn Advanced roaming architecture design across multi-market ecosystems. Deep expertise in GSMA/3GPP standards and roaming interoperability. Cross-market governance, global alignment, and architectural leadership. Vendor negotiation, stakeholder management, and technical authority communication skills.Data-driven performance optimisation across international signalling and mobility services.