Roaming Solution Architect Job at Vodafone (Bucuresti)

Job Description

We are seeking a Roaming Solution Architect to design and guide the evolution of roaming services across global Vodafone markets. In this role, the individual will own the end‑to‑end roaming architecture, ensuring secure, scalable, standards‑aligned solutions that support Vodafone’s international mobility strategy. This includes technical authority across S8HR, LBO, signalling, routing, emergency services, international interworking, and roaming security. The position also involves driving technical readiness, lifecycle assurance, architectural governance, and cross‑market alignment to ensure exceptional roaming performance and service reliability.

Job Responsibility

Define, maintain, and evolve the global roaming target architecture, covering S8HR, LBO, signalling, routing, and interconnect models
Lead High‑Level and Low‑Level Design creation for multi‑market roaming service deployments
Establish architectural principles, reusable patterns, and guardrails to support cross‑market engineering consistency
Ensure compliance with GSMA and 3GPP roaming specifications (including IR.21, IR.65, IR.85, IR.88, IR.95)
Drive standardisation and cross‑market alignment for roaming services and technical frameworks
Lead technical readiness and launch governance for roaming services, ensuring seamless interworking with EPC/5GC, IPX, and signalling networks
Conduct inter‑operator testing, roaming trials, and international interoperability validation
Oversee lifecycle assurance, deep‑dive diagnostics, and issue resolution for deployed roaming services
Monitor and optimise key roaming KPIs including attach, registration, and session success
Act as Vodafone’s technical authority in vendor engagements, IPX discussions, GSMA working groups, and operator‑partner interactions
Provide technical mentorship to teams across VOIS and Vodafone markets
Support technical budget planning for roaming evolution, including investment recommendations and cost‑efficient design choices
Evaluate vendor proposals and assess licensing, capacity, and financial implications in line with Group strategy

Requirements

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

What we offer

Hybrid way of working
Medical and dental services
Life and hospitalization insurance
Dedicated employee phone subscription
Take control of your benefits and choose any of the below options: MEAL TICKETS/ PRIVATE PENSION/ VACATION VOUCHERS/ CULTURAL VOUCHERS within the budget
Special discounts for gyms and retailers
Annual Company Bonus
Loyalty Programme
Ongoing Education – we continuously invest in you to ensure you have everything needed to excel on the job and enhance your skills
You get to work with tried and trusted web-technology
Getting in on the ground floor of a technology changing company
We let you write your own story by planning vacations: go for a trip, experience new things, have fun and enjoy your 23 days off
Special Paternal Program - 4 months of paid paternity leave

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Roaming Solution Architect

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