SC-Cleared IT & Test Engineer

Experis; Corsham; Hybrid; GBP 98,000 - 133,000; Full time

Job summary

Experis IT&T is seeking an experienced IT&T Test Engineer to support a high-profile, secure technology programme within a defence and national security environment. You will provide hands-on testing across the full lifecycle, developing verification, validation, and compliance testing to support solution acceptance and operational readiness.

This role focuses on creating, executing, and reporting test activities spanning infrastructure, security, identity management, interoperability,

Qualifications

• Proven experience in Test Engineering across planning, scripting, execution and reporting.
• Experience producing detailed test documentation and evidence packs.
• Strong background in functional, non-functional, integration and regression testing.
• Experience in validation and acceptance activities within complex enterprise/infrastructure.
• Understanding of IAM concepts (Authentication, Authorization, RBAC).
• Knowledge of PKI, certificates, and trust frameworks.
• Active UK Security Clearance (SC) is required.

Responsibilities

• Develop, maintain, and execute test scripts to support verification, validation, and acceptance activities.
• Support the development and execution of Validation and Verification (V&V) plans.
• Create functional, non-functional, integration, interoperability, and regression test scenarios.
• Execute testing across infrastructure, security, identity management, policy enforcement, and interoperability components.
• Conduct interoperability testing between multiple interconnected systems and services.
• Validate information-sharing capabilities, policy-based controls, auditability, and traceability requirements.
• Support testing of Identity and Access Management (IAM), Public Key Infrastructure (PKI), and trust services.
• Produce and maintain comprehensive test documentation including: Test Plans, Test Scripts, Test Procedures, Defect Reports, Test Reports, Evidence Packs.
• Capture, manage, and report defects, supporting investigation and root cause analysis activities.
• Support the installation, configuration, and validation of test and demonstration environments.
• Collaborate closely with architects, engineers, security specialists, and delivery teams.
• Maintain test evidence to support assurance, compliance, acceptance, and audit requirements.
• Support compliance validation activities and stakeholder-witnessed demonstrations.
• Document test outcomes, lessons learned, and recommendations.
• Contribute to the continuous improvement of testing processes, tooling, and methodologies.
• Deliver testing activities in line with programme schedules, quality standards, configuration management processes, and security requirements.

Skills

Test planning

Test script development

Test execution

V&V plans

Interoperability testing

IAM testing

PKI testing

Security testing

Documentation

Agile/Waterfall

Defect management

Test environments

Tools

JIRA

Confluence

VMware

VDI

Job description

Experis IT&T is seeking an experienced IT&T Test Engineer to support a high-profile, secure technology programme within a defence and national security environment. You will provide hands-on testing across the full lifecycle, developing verification, validation, and compliance testing to support solution acceptance and operational readiness.

This role focuses on creating, executing, and reporting test activities spanning infrastructure, security, identity management, interoperability,