Technical Architect - Data Platform Modernisation+ Fuly remote role (with expensed travel)+ 500 to 520 per day Inside IR35+ SC Cleared roleRole OverviewWe are seeking a highly experienced Technical Architect to lead the architectural modernisation of a large-scale, mission-critical data platform within DWP.This is a hands-on senior architecture role focused on transforming a complex brownfield data estate while maintaining uninterrupted service delivery. You''ll be driving major technical decisions across data architecture, infrastructure, security, and cross-cloud connectivity - shaping the future of a platform that directly supports millions of UK citizens.Key Responsibilities1. Brownfield Architecture and Platform ModernisationLead the re-architecture of an established enterprise data platform (DWX).Support new microservice-based upstream integrations and large-scale schema evolution (300+ schemas).Design strategies to merge 3-5 years of legacy data with new data models while maintaining consistent user journeys.Define modernisation approaches that minimise disruption to live services.2. Data Platform and Integration ArchitectureDesign modern ingestion, transformation, and storage patterns.Define migration and schema transition strategies that maintain data quality, lineage, and service continuity.Architect phased rollout approaches to reduce operational risk.3. Infrastructure, Security and Network ArchitectureLead the transition from bespoke UC MacBook/VPC setups to stand