Interconnect and Roaming Engineer

At Vodafone, we're not just shaping the future of connectivity for our customers – we're shaping the future for everyone who joins our team. When you work with us, you're part of a global mission to connect people, solve complex challenges, and create a sustainable and more inclusive world. If you want to grow your career whilst finding the perfect balance between work and life, Vodafone offers the opportunities to help you belong and make a real impact.

Role purpose: 

Ensures the seamless technical enablement and performance of interconnect and Roaming services across Vodafone and partner networks. 
Responsible for the configuration, testing, and troubleshooting of interconnects required for voice, SMS, and data services, ensuring compliance with GSMA standards and Vodafone guidelines.
Collaborates with internal teams, external operators, and service providers to manage service openings, lifecycle maintenance, and incident resolution. By maintaining robust interconnect configurations and proactively monitoring service KPIs, the Roaming Interconnect Engineer plays a key role in supporting Vodafone's global mobility strategy and enhancing customer experience.

Key accountabilities and decision ownership : 

• Interconnect Configuration & Maintenance: maintain routing and signalling setups across interconnect platforms. .
• Incident Management: analyse and resolve roaming and interconnect-related issues and perform root cause analysis and order corrective actions.
• Documentation & Compliance: Maintain technical documentation and ensure compliance with standards.
• Service Launch Readiness: when needed, validate readiness for new interconnect services and approve service opening test results and go-live status.
• Decision Ownership: Own technical decisions related to routing, signalling, and partner configurations. Validate readiness and approve go-live for new
• interconnect launches. Assess and approve network changes impacting roaming/interconnect services.
• Defines evolutions of the interconnect guidelines, involved in the preparation of HLDs
• Focuses on Interconnect for Germany

Core competencies, knowledge and experience :

• In-depth knowledge of mobile network architecture (2G/3G/4G/5G).
• Familiarity with signaling protocols: SS7, Diameter, SIP, GTP.
• Experience with network elements: HLR/HSS, STP, DRA, PGW/SGW, IMS.
• Understanding of GSMA standards (IR.21, IR.85, IR.88) and IPX/GRX networks.
• Good understanding of the SW lifecycle: design, development, testing and acceptance, implementation, performance optimization and troubleshooting
• Core Competencies: Strong analytical and problem-solving skills. Effective communication and stakeholder management. Project and time management across multiple priorities. High attention to detail and accuracy. Adaptability to evolving technologies and standards.

Must have technical / professional qualifications: 

• University degree in computer science, telecommunications or equivalent
• Telecommunications industry and project delivery experience (operator or supplier)
• 2–3 years of experience in telecom engineering, preferably in roaming or interconnect.
• A very good English level is required

Worried that you don't meet all the desired criteria exactly? At Vodafone we are passionate about empowering people and creating a workplace where everyone can thrive, whatever their personal or professional background. If you're excited about this role but your experience doesn't align exactly with every part of the job description, we encourage you to still apply as you may be the right candidate for this role or another opportunity.

We are a leading international Telco, serving millions of customers. At Vodafone, we believe that connectivity is a force for good. If we use it for the things that really matter, it can improve people's lives and the world around us. Through our technology we empower people, connecting everyone regardless of who they are or where they live and we protect the planet, whilst helping our customers do the same.

Belonging at Vodafone isn't a concept; it's lived, breathed, and cultivated through everything we do. You'll be part of a global and diverse community, with many different minds, abilities, backgrounds and cultures. ;We're committed to increase diversity, ensure equal representation, and make Vodafone a place everyone feels safe, valued and included.

If you require any reasonable adjustments or have an accessibility request as part of your recruitment journey, for example, extended time or breaks in between online assessments, please refer to for guidance.

Together we can.