Senior System Architect - PegaRemote | 6 months | Inside IR35 | Active SC clearance mandatory | Start: 23 November 2026Engagement OverviewClient: Leading UK government organisation Security clearance: Active SC clearance - MANDATORY (no sponsorship available)Location: Remote (UK-based)Start date: 23 November 2026Duration: 6 months (initial term)IR35 status: Inside IR35Day rate: To be confirmedCandidates without current, active SC clearance cannot be considered.About the RoleWe are looking for a Senior System Architect (SSA) to design and build high-quality Pega solutions for a leading UK government organisation. Working under the Lead System Architect, you will deliver user stories end to end, from configuration and integration through to testing and deployment.Key ResponsibilitiesDesign, configure and build Pega case types, flows, UI, data pages, decisioning rules and integrations.Translate user stories and acceptance criteria into working, guardrail-compliant Pega features.Build and test REST/SOAP integrations with internal and external government systems.Write and maintain unit tests (PegaUnit) and support automated and manual testing.Take part in sprint planning, stand-ups, refinement and playbacks.Support the LSA with technical design, code reviews and estimation.Diagnose and resolve defects and performance issues using Pega tools (Tracer, Clipboard, PAL).Follow branching, rule-set versioning and deployment processes.Mentor junior System Architects where ..... full job details .....