Senior Technical Architect

We’re looking for an experienced Senior Technical Architect to provide additional support across a complex, multi-supplier environment.

You’ll support supplier engagement, architecture reviews, technical assurance, integration design, discovery work and the modernisation of services.

Key responsibilities:

• Participate in supplier technical calls, workshops and design reviews
• Challenge supplier assumptions, architectural decisions, implementation approaches and delivery plans
• Review APIs, integrations, system architectures and detailed technical designs
• Provide technical assurance across testing, resilience, observability and operational readiness
• Identify architectural and delivery risks and recommend pragmatic solutions
• Support technical discoveries, including build-versus-buy assessments
• Develop prototypes or proofs of concept where these help validate an approach
• Contribute to future-state architecture and service-modernisation initiatives
• Work closely with internal technical teams and multiple external suppliers
• Ensure proposed solutions are technically sound, supportable and aligned with wider objectives
• Significant experience working as a Technical or Solution Architect in complex technology environments
• Strong hands-on engineering background and the technical depth to scrutinise detailed designs
• Experience reviewing API, integration and distributed-system architectures
• Proven ability to challenge technical decisions constructively and recommend practical alternatives
• Experience providing assurance across resilience, testing, observability and operational readiness
• Strong understanding of modern engineering, integration and service-design principles
• Experience working with multiple suppliers and navigating competing technical perspectives
• Ability to assess implementation plans, dependencies, risks and technical feasibility
• Experience supporting technical discovery and build-versus-buy analysis
• Ability to prototype or validate technical ideas when required
• Excellent stakeholder-management and communication skills
• A collaborative, delivery-focused approach with the confidence to work across technical and non-technical audiences

Clearance:

• Active Security Check (SC) clearance is preferred
• Candidates who are eligible to obtain SC clearance will also be considered

Rate:

£500-550pd inside.

Location and travel:

• The role can involve work across London, Sheffield, Leeds and Birmingham
• Travel is expected no more than once per month