Technical Architect – SC Cleared

Whitehall Resources are currently looking for a Technical Architect – SC Cleared.

This role will be Inside of IR35, so you will be required to use an FCSA Accredited Umbrella Company.

Must not have been outside of the UK for more than 6 months in the last 5 years.

Key Requirements:

• Technically Lead the architectural modernisation of a largescale, established data platform (DWX).
• This role requires experience of brownfield environments, strong hands-on technical capability, and the ability to reshape existing architectures to align with Data & Analytic (D&A) standards while maintaining uninterrupted service.
• You will be responsible for impact assessment due to rearchitecting the source system, design data flows, design and implement infrastructure changes to align Client standards, managing large-scale schema evolution, enabling cross-cloud connectivity, and providing senior guidance to technical teams and stakeholders.

Key Responsibilities:

• Analyse and reshape the existing AWS EMR based DWX architecture to support new microservices architecture at source system and evolving schema definitions (300+ schemas).
• Design approaches for merging 3–5 years of historical data in DWX with newly structured data while maintaining consistent user journeys.
• Identify and define implementation approaches that minimise disruption to live services.
• Define new and/or modify ingestion, transformation, and storage patterns to implement the changes due to microservice-based rearchitected source system.
• Ensure downstream services maintain data quality, lineage, and continuity during schema transitions.
• Design data migration strategies and transient approaches supporting phased, low-risk rollouts.
• Architect the transition from Universal Credit (UC) specific MacBooks (bespoke laptop)/VPC access to standard devices using Zscaler.
• Define the infrastructure and security requirements for safe and compliant connectivity between AWS-hosted services and Azure-hosted environments (e.g., SaSViya).
• Ensure the confidentiality, integrity, and controlled movement of sensitive data across cloud boundaries.
• Assess existing technology choices (e.g., Kotlin) and define Python migration paths aligned to approved standards.
• Produce clear technical options, roadmap recommendations, and architectural decision records.
• Advocate for simplification, reduction of technical debt, and alignment to Digital Blueprint and Enterprise Architecture.
• Act as the senior architectural authority across DWX and related services.
• Communicate complex technical concepts in a clear, structured, audience-appropriate manner.
• Collaborate closely with domain architects, engineers, and suppliers.
• Provide architectural assurance and technical governance across delivery teams.