Test Engineer

Job Title: Test Engineer (Defence / Secure Infrastructure)

Location: Corsham - Onsite

Term: 9 Months

IR35: INSIDE

Day Rate: £DOE

***Security Clearance*** - Current & Valid UK SC Required to be considered for this opening

The Opportunity

We are seeking an experienced Test Engineer to support a high-profile defence programme.

This is a hands-on testing role working across infrastructure, networking, security, identity and interoperability, supporting the verification, validation and acceptance of a complex capability within a secure and regulated defence environment.

You will play a key role throughout the testing lifecycle, from developing test scenarios and scripts through to execution, evidence gathering, defect management, demonstrations and formal acceptance.

Key Responsibilities

• Develop, maintain and execute test scripts supporting verification, validation and acceptance activities.
• Support the development and execution of the V&V plan.
• Develop and execute functional, non-functional, integration, interoperability and regression testing.
• Test infrastructure, networking, security, identity and policy-enforcement capabilities.
• Support interoperability testing between OpNET, partner systems and FMN-aligned services.
• Validate information-sharing, policy controls, auditability and traceability requirements.
• Support testing of IAM, FIAM, PKI and trust services.
• Produce test plans, procedures, scripts, evidence packs, defect reports and test reports.
• Capture and manage defects, supporting investigation, root-cause analysis and resolution.
• Support the installation, configuration and validation of test and demonstration environments.
• Work closely with architects, engineers and security specialists to support system integration and validation.
• Maintain robust test evidence for assurance, compliance, acceptance and audit purposes.
• Support FMN Spiral 6 compliance activities and Authority-witnessed demonstrations.
• Document test outcomes, lessons learned and recommendations.
• Contribute to continuous improvement of test processes, tools and methodologies.
• Deliver testing activities in line with programme milestones, configuration controls and security requirements.

What We Are Looking For

• Strong commercial experience in Test Engineering, including test planning, scripting, execution and reporting.
• Experience producing comprehensive test documentation and evidence.
• Strong functional, non-functional, integration and regression testing experience.
• Experience supporting V&V, acceptance or assurance activities within complex enterprise or infrastructure environments.
• Good understanding of systems integration and end-to-end service validation.
• Experience testing infrastructure, networks, security or identity management solutions.
• Knowledge of IAM, including authentication, authorisation and RBAC.
• Understanding of PKI, digital certificates and certificate-based trust.
• Experience working within secure, regulated or highly controlled environments.
• Strong analytical, troubleshooting and stakeholder communication skills.
• Ability to manage competing priorities and deliver against demanding programme timelines.
• Experience working within Agile, Waterfall or other structured delivery environments.
• Good working knowledge of Microsoft Office.

Desirable Experience

• Defence, NATO or coalition interoperability testing.
• Federated Mission Networking (FMN), particularly Spiral 6.
• Data Centric Interoperability (DCI) or secure information-sharing capabilities.
• Federated Identity and Access Management (FIAM).
• Data Centric Security, policy enforcement and metadata-based information controls.
• PKI implementations and certificate-based authentication.
• VMware, VDI or multi-tenant environments.
• Military information systems, Defence Digital, OpNET or NSoIT(D).
• Jira and Confluence.
• Formal verification, validation, demonstration and acceptance activities.
• ISTQB, Security+, VMware VCP or equivalent qualifications.
• SAFe and/or Waterfall methodologies.