Lead Technical Architect

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 youll 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.

• 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.

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.