VodafoneThree – Senior Design Engineer Telco Application

Overview

In this role, you will own Telco Application Services and shape solutions that support business and customer goals. You’ll guide systems integrators and partners to meet required outcomes and align designs with architectural standards. You’ll help define technical requirements and ensure delivery meets functional and operational expectations. You’ll collaborate with design authorities and domain leads to influence the technical roadmap and drive cloud and network function evolution. This is a fast-paced, collaborative opportunity at VodafoneThree to contribute to a more connected nation and enhanced user experiences.

Pay / Benefits

• competitive pay
• bonus scheme
• up to 28 days off plus bank holidays
• pension plan
• discretionary benefits (discounts and vouchers)
• learning tools and parental leave policies

Responsibilities

• Own Telco Application Services and align them with architectural principles and business objectives
• Provide technical guidance to systems integrators, suppliers, and project teams
• Define and refine technical requirements and specifications
• Ensure delivered solutions meet functional and operational needs
• Design and specify network functions for end-to-end services
• Support programme and project delivery with planning, risk management, and milestones
• Collaborate with Technical Design Authorities and domain leaders on the roadmap
• Monitor and improve platform performance, capacity, resilience, and efficiency
• Build strong partnerships with suppliers, cloud providers, and internal teams
• Drive continuous improvement to reliability, performance, and customer experience
• Support adoption of cloud and cloud-native technologies across environments

Key requirements

• Hands-on technical expertise in Telco Applications or Core Network technologies
• Experience in cross-functional teams and influencing outcomes
• Capable of balancing technical and business priorities
• Adaptable and resilient in fast-changing tech environments
• Growth mindset and commitment to continuous learning
• Strong understanding of customer-focused technology delivery and operational excellence
• In-depth knowledge of 3G, 4G and 5G Core Network architectures and their voice, data, and messaging applications
• Hands-on experience with SMSC, MMSC, Steering of Roaming, OTA, OCS, GMLC, ES, CBC, Voicemail, NCC, SIG
• Strong knowledge of Diameter interfaces (Gx, Gy, Sy, Sd)
• Understanding of VoLTE and VoWiFi architectures and call flows
• Experience with cloud technologies including NFVi, Kubernetes and Software Defined infrastructure
• Cloud-native principles and deployment approaches across on-premises, off-premises, and hybrid
• Ability to build relationships with suppliers, partners, and stakeholders at all levels
• Motivation to deliver measurable outcomes, drive innovation, and improve customer experience
• Commitment to inclusion, collaboration, operational excellence, and continuous improvement

• collaboration
• problem-solving
• adaptability
• 3G/4G/5G Core Network architectures
• SMSC, MMSC, OCS, GMLC, Voicemail, NCC, SIG
• Diameter interfaces (Gx, Gy, Sy, Sd)

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