Technical Design Authority - Subscriber Management in Newbury

Location: Newbury + Hybrid

Working Hours: Full time 37.5 hours per week - Mon to Fri Hybrid

We believe that through collaboration and connection with our colleagues we can achieve great things. Our hybrid working approach allows our people to work both in the office and at home, providing the flexibility and resources you need to succeed in your role. We don't require you to be in on specific days; instead, we ask people to come into the office 2-3 days each week. You should work with your line manager to understand what their expectations are for you, your specific role and your team.

We're here to build a network the UK can count on - one that connects people, places and potential. Because no matter where you live, what your background is, or how you get online - we think everyone deserves the same chance to stay connected, and with VodafoneThree, that future's being built - today. We're creating more than the UK's best network. We're helping close the digital divide, empower communities and drive meaningful progress. We believe that everyone should feel they belong. Whoever you are and whatever your story, there's space for you here. We're building a workplace where different perspectives are welcomed, voices are heard, and everyone feels safe to show up as themselves. You'll join a team that genuinely cares - about each other, about our customers, and about the future we're building. From day one, you'll be welcomed, valued and encouraged to bring your whole self to work.

Join us and you'll be at the heart of change. That means building responsibly, investing sustainably and creating opportunities that last. We're not just expanding connectivity; we're reimagining what a connected nation looks like. With £11bn invested in 5G and digital infrastructure, your work will directly power businesses, services, and communities across the country. You'll work on real challenges, with real impact, across every corner of the country. Wherever you join us, whatever your role, you'll be helping to build a future that works better for everyone. We move at pace, because what we're building matters - and we're learning as we go. We're proud of the progress we've made, but we're just getting started. Join our UK Networks team, where we're continually building and enhancing our network, connecting millions of people and businesses across the country. Be part of the team that makes it all happen - simplifying, automating, and bringing better connectivity than ever before, with giga-fast speed, to our customers.

What you'll do

Our organisation is a leading provider in the telecommunications and digital services sector, committed to delivering high‑quality connectivity and innovative solutions to consumers and businesses. With a strong focus on digital transformation and operational excellence, we aim to drive sustainable growth and superior customer experience across all touchpoints. Technical Design Authority - Subscriber Management is a senior technical role within the technology function, accountable for design, delivery, and optimisation of the Subscriber Data Management solutions. This role ensures that these mission-critical systems remain robust, future-ready, and aligned with the organisation’s strategic and operational goals. The position is responsible for the end-to-end lifecycle of technology used to provide services within the domain. Capacity management and system optimisation is a continuous priority, with the role focused on enhancing reliability, efficiency, and cost‑effectiveness through performance management, analytics, and technology upgrades.

• Provide technical leadership to the Design community spanning strategy to implementation and interfacing with various internal teams and external teams to ensure technology meets customer needs and also fulfils regulatory requirements.
• Collaborate with partners to produce clear low/high level designs and a development plan, driving development using practical knowledge of best practices and focussing on development quality and functional capability delivery.
• Drive effective partner management, ensuring delivery standards are defined, maintained and continuously improved.
• Derive the appropriate test strategy and, with the QA teams, planning across VodafoneThree and Partner teams to assure successful projects/programme delivery.
• Work with key technology and business stakeholders ensuring cross functional engagement and collaboration to assure successful development.
• Provide active guidance to partners to support capability maturity, evolving with technology and industry trends, applying appropriate measures for continuous improvement.
• Support the development of a culture of continuous improvement in the way we operate, including release and test automation, process automation and technical innovation.

Vendor Relationships – SDM providers: Net Number, Nokia, Ericsson.

Partner Ecosystem - Systems Integrators: Tech Mahindra, TCS, Capgemini, Sogeti. Cloud & Hyperscalers: CNIS, NRHO, On prem Broadcom for VNF and CNF hosting.

Who you are

Demonstrable experience of providing technical, decision making and problem solving leadership for a domain and can demonstrate setting quality standards for delivery and design. Demonstrate the ability to communicate with multiple stakeholders within the organization to act as the liaison between the business, other technical communities and the 3rd party delivery teams to ensure the delivery of the business requirements. This should include the ability to convert business requirements into a technical solution. Experience in working in an environment where you have managed delivery to a predetermined contractual/business outcome and know how to influence/negotiate technical outcomes with 3rd parties including conflict resolution due to changing priorities. In depth understanding of 3G, 4G and 5G Core Network Architectures including IMS, and an understanding of the following systems: UDM, UDR, SPR, HLR/HSS, EiR, ENUM & MNP. In-depth knowledge of Diameter Network interfaces including S6a, Sh, SWx, Zh, SLh, Cx, S13 and in-depth knowledge of LDAP & HTTP2.

Worried that you don't meet all the desired criteria exactly? We know that everyone is unique, with multiple aspects to their identity and different experiences behind them. We are passionate about Inclusion for All 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 apply as you may be the right candidate for this role or another role, and our recruitment team can help you see how your skills fit in.

What We Offer

We care about our people's success by offering great pay, bonuses, up to 28 days off plus bank holidays, and paid time for charity work. You can personalise our benefits for you and your family, like discounts, vouchers, a pension plan and loads more. We help with your career through our amazing learning tools and top‑notch parental leave policies.

Need to know

We are regulated by the Financial Conduct Authority and all offers of employment for this role are subject to background checks, including criminal (DBS) and financial checks to meet the regulators standards. We believe everyone should have the opportunity to interview for a role that matches their skills. In collaboration with our Talent, Diversity & Inclusion teams and our employee‑led DEI Networks, we identified a range of reasonable adjustments to help you feel comfortable and perform at your best self during the interview process. 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, a sign language interpreter, or assistive technology, please contact your recruiter directly or email jobs@three.co.uk for guidance. We use AI in different parts of our business to boost innovation, improve efficiency, and create new opportunities. We know many candidates use AI to fine‑tune their CVs or prepare for interviews, but what we really care about is your unique experiences and achievements. During the interview, we want you to rely on your own knowledge and skills to show us who you really are - your personality, creativity, and abilities. Above all, we're looking for authenticity and can't wait to get to know the real you.