Job Description

The team you'll be working with:
Our Public Sector Business Unit is growing rapidly, and we are looking for an experienced Lead Technical Architect to join our expanding team delivering high-impact digital and data transformation for UK Government clients.
We are seeking a highly motivated individual with a strong background in shaping and delivering complex technical solutions within Central Government--ideally gained in a consultancy or systems integrator environment. You will be instrumental in driving architectural best practices, supporting pre-sales activity, and leading the design of secure, scalable systems that underpin mission-critical public services.
You will have a broad understanding of technology strategy, architecture design, and delivery assurance across cloud platforms, application development, integration, and data. A confident communicator, you'll be comfortable engaging with senior stakeholders and technical teams alike, producing high-quality artefacts, and presenting architecture decisions clearly and persuasively. You will be used to working in fast-paced, high-trust environments, forming and leading architecture teams, and bringing clarity and structure to complex, ambiguous problems. A solid understanding of secure-by-design principles, government digital standards, and technology assurance is essential.
What you'll be doing:

• Lead the technical design and architecture of solutions for complex public sector programmes.
• Define end-to-end architectures that span areas such as cloud platforms, applications, data, security, and integration layers.
• Work with stakeholders to ensure solutions align to business goals, government policies, and technical constraints.
• Support all phases of delivery, from discovery and alpha through to beta and live, ensuring compliance with GDS Service Standards and technology assurance processes.
• Drive architectural decision-making, technical governance, and reusability across programmes.
• Support pre-sales, bids, and client proposals, acting as a technical subject matter expert.
• Mentor junior team members, providing leadership within our technical communities, and contributing to the evolution of our public sector offerings.

What experience you'll bring:

• Significant experience designing and delivering complex digital and data solutions in the UK Government or wider Public Sector.
• Deep knowledge of enterprise architecture patterns, public cloud services (Azure, AWS), application design, integration patterns (API, event-driven), and data platforms.
• Demonstrable success in shaping client strategies, designing operating models, and engaging in business case development and benefit modelling.
• Experience of bid and pre-sales involvement, including shaping client proposals, contributing to SOWs, and presenting to commercial and technical stakeholders.
• A sound understanding of government standards and frameworks, including the Digital Service Standard, GDS assessment criteria, NCSC cloud security principles, and relevant assurance models.
• Experience working in agile delivery environments and collaborating across business and technology domains.
• Excellent communication and leadership skills, with the ability to articulate and advocate for strategic solutions at executive level.

Essential:

• Extensive experience in a solution architecture or enterprise architecture role, with demonstrable impact in government or regulated industries.
• Background in consulting, systems integration, or technology leadership within public sector environments.

Desirable:

• Relevant certifications such as TOGAF, SAFe, or cloud architect qualifications (Azure/AWS).
• Understanding of government technology assurance frameworks and legacy modernisation journeys.
• Degree in a technology-related discipline or equivalent practical experience.

Who we are:
We're a business with a global reach that empowers local teams, and we undertake hugely exciting work that is genuinely changing the world. Our advanced portfolio of consulting, applications, business process, cloud, and infrastructure services will allow you to achieve great things by working with brilliant colleagues, and clients, on exciting projects.
Our inclusive work environment prioritises mutual respect, accountability, and continuous learning for all our people. This approach fosters collaboration, well-being, growth, and agility, leading to a more diverse, innovative, and competitive organisation. We are also proud to share that we have a range of Inclusion Networks such as: the Women's Business Network, Cultural and Ethnicity Network, LGBTQ+ & Allies Network, Neurodiversity Network and the Parent Network.
For more information on Diversity, Equity and Inclusion please click here:
what we'll offer you:
We offer a range of tailored benefits that support your physical, emotional, and financial wellbeing. Our Learning and Development team ensure that there are continuous growth and development opportunities for our people. We also offer the opportunity to have flexible work options.
You can find more information about NTT DATA UK & Ireland here:
We are an equal opportunities employer. We believe in the fair treatment of all our employees and commit to promoting equity and diversity in our employment practices. We are also a proud Disability Confident Committed Employer - we are committed to creating a diverse and inclusive workforce. We actively collaborate with individuals who have disabilities and long-term health conditions which have an effect on their ability to do normal daily activities, ensuring that barriers are eliminated when it comes to employment opportunities. In line with our commitment, we guarantee an interview to applicants who declare to us, during the application process, that they have a disability and meet the minimum requirements for the role. If you require any reasonable adjustments during the recruitment process, please let us know. Join us in building a truly diverse and empowered team.

Skills Required