PEGA LEAD SYSTEM ARCHITECT - (PEGA LSA)

Squareone; Greater London; Remote; GBP 101,000 - 111,000; Full time

Job summary

Square One Resources Limited is seeking a Pega Lead System Architect for a remote UK-based contract. You will own the architecture, define data models, and govern integrations across an enterprise Pega application.

In this senior role, you will lead distributed teams, drive Pega standards, and ensure security controls and DevOps practices are implemented effectively. Immediate start for a 6-month engagement.

Qualifications

• Certified Pega Lead System Architect (CLSA) Part 1 & 2.
• Extensive experience delivering large-scale Pega implementations.
• Strong knowledge of Pega Infinity, architecture, integrations and case management.
• Experience with performance tuning and troubleshooting using PAL, PDC and DB Tracer.
• Proven experience leading distributed development teams.
• Agile / Pega Express delivery experience.
• Current and active SC Security Clearance.

Responsibilities

• Own the technical architecture and design authority for the Pega solution.
• Define application architecture, class structures, data models and reuse strategies.
• Design complex integrations using REST, SOAP, Kafka and other connectors.
• Lead security design, including SSO, SAML, OAuth 2.0 and access controls.
• Own performance, scalability, resilience and non-functional requirements.
• Lead, mentor and review the work of Senior and System Architects.
• Drive Pega development standards, guardrail compliance and DevOps practices.
• Work closely with Lead Business Architects and technical stakeholders.

Skills

Pega Lead System Architect

Technical Leadership

Distributed teams leadership

Agile / Pega Express

Tools

REST

SOAP

Kafka

PAL

PDC

DB Tracer

Job description

PEGA LEAD SYSTEM ARCHITECT - (PEGA LSA)

Remote (UK-based)

£550-£600 per day | Inside IR35

6 months initial contract

Start: Immediate

Active SC Clearance - MANDATORY

I'm currently looking to speak with an experienced Pega Lead System Architect (LSA) for an exciting 6-month contract supporting a leading UK government organisation through a Pega Partner.

This is a senior technical leadership position, taking ownership of the architecture and technical direction of an enterprise Pega application.

Key Responsibilities:

• Own the technical architecture and design authority for the Pega solution.
• Define application architecture, class structures, data models and reuse strategies.
• Design complex integrations using REST, SOAP, Kafka and other connectors.
• Lead security design, including SSO, SAML, OAuth 2.0 and access controls.
• Own performance, scalability, resilience and non-functional requirements.
• Lead, mentor and review the work of Senior and System Architects.
• Drive Pega development standards, guardrail compliance and DevOps practices.
• Work closely with Lead Business Architects and technical stakeholders.

Essential Requirements:

• Certified Pega Lead System Architect (CLSA) - Part 1 and Part 2.
• Extensive experience delivering large-scale Pega implementations.
• Strong knowledge of Pega Infinity, architecture, integrations and case management.
• Experience with performance tuning and troubleshooting using PAL, PDC and DB Tracer.
• Proven experience leading distributed development teams.
• Agile / Pega Express delivery experience.
• Current and active SC Security Clearance.

Desirable:

• UK government or public-sector experience.
• Pega Constellation architecture.
• Pega Cloud, AWS or Azure deployments.
• Pega GenAI, Process Fabric or Customer Decision Hub.
• Knowledge of NCSC security principles.