> Markdown version of [/jobs/ext/3977702-sc-cleared-senior-systems-architect-pega](https://www.wearedevelopers.com/jobs/ext/3977702-sc-cleared-senior-systems-architect-pega). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

---

# SC Cleared Senior Systems Architect - PEGA

- **Company:** Square One Resources Limited
- **Location:** UK (Remote available)
- **Experience:** Expert
- **Salary:** £123,500.0
- **Contract:** Temporary contract
- **Skills:** Web Accessibility, Agile Methodology, Unit Testing, Microsoft Azure, Code Review, Continuous Integration, Scrum Methodology, Simple Object Access Protocol (SOAP), Systems Architecture, Management of Software Versions, Web Content Accessibility Guidelines, Pega, DevOps Tools - Open-source, SOAPAPI, Git, SC Clearance, Jenkins
- **Published:** October 28, 2026
- **Apply:** https://www.careerboard.com/gb/en/find-jobs-in-United-Kingdom/-4CE5B7B43F4CB71BC3/

## About the Role

* Active SC clearance (mandatory).
 * Certified Pega Senior System Architect (CSSA).
 * Solid hands-on development experience on Pega Platform/Pega Infinity in enterprise environments.
 * Strong knowledge of case management, data modelling, UI, activities, data transforms and declarative rules.
 * Experience building and consuming REST and SOAP services in Pega.
 * Experience working in Agile/Pega Express delivery teams.
 * Good communication skills and comfortable working remotely in a distributed team.

Desirable Skills and Experience

 * UK government or public-sector Pega project experience.
 * Experience with Pega Constellation UI.
 * Working towards Certified Pega Lead System Architect (CLSA).
 * Experience with Deployment Manager, CI/CD and DevOps tooling (Jenkins, Git, Azure DevOps).
 * Knowledge of accessibility standards (WCAG 2.2 AA).

## Description

We 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., * Design, 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 required.
 * Produce clear technical documentation for handover and support.