Test Engineer

Overview

We are seeking an experienced Test Engineer to deliver hands-on engineering support to the OpNET FMN Spiral 6 Data Centric Interoperability (DCI) Pilot, developing and executing verification, validation, interoperability, and compliance testing activities to support the acceptance of the solution.

The role focuses on the creation, execution, and reporting of test activities across infrastructure, security, identity, interoperability, and information exchange components, supporting full lifecycle delivery from test design through to execution, validation, demonstration, and reporting within secure and regulated defence environments.

This is a contract opportunity until March 2028, offering a daily rate of £650 (Inside IR35) with an onsite presence four days a week in Corsham Wiltshire.

Specific job skills

Main Responsibilities will include, but are not limited to:

• Develop, maintain, and execute test scripts to support verification, validation, and acceptance of the FMN Spiral 6 DCI capability
• Support the development and execution of the Validation and Verification (V&V) plan.
• Develop functional, non-functional, integration, interoperability, and regression test scenarios.
• Execute test activities across infrastructure, security, identity, policy enforcement, and interoperability components.
• Conduct interoperability testing between OpNET, partner systems, and FMN-aligned services.
• Support validation of coalition information sharing, policy-based information controls, auditability, and traceability requirements.
• Support testing of Federated Identity and Access Management (FIAM), Public Key Infrastructure (PKI), and trust services.
• Produce and maintain test documentation including test plans, test scripts, test procedures, evidence packs, defect reports, and test reports.
• Capture, manage, and report defects, supporting investigation, root cause analysis, and resolution activities.
•  Support installation, configuration, and validation of test environments and demonstration environments.
• Collaborate with architects, engineers, and security specialists to ensure successful integration and validation of the solution.
• Record and maintain test evidence to support assurance, compliance, acceptance, and audit activities.
• Support FMN Spiral 6 compliance validation activities and Authority-witnessed demonstrations.
• Document test outcomes, lessons identified, and recommendations arising from validation activities.
• Support continuous improvement of test processes, tooling, and methodologies.
• Deliver testing activities in line with programme timelines, quality standards, configuration management processes, and security requirements.

Essential skills and experience

• Strong experience in test engineering, including test planning, test script development, test execution, and reporting.
• Experience producing test documentation including test plans, test scripts, test procedures, defect reports, test reports, and evidence packs.
• Experience performing functional, non-functional, integration, and regression testing.
• Experience supporting validation and acceptance activities within complex enterprise or infrastructure environments.
• Understanding of systems integration testing and end-to-end service validation.
• Experience testing infrastructure, networking, security, or identity management solutions.
• Knowledge of Identity and Access Management (IAM) concepts including authentication, authorisation, and Role-Based Access Control (RBAC).
• Understanding of Public Key Infrastructure (PKI), digital certificates, and certificate-based trust mechanisms.
• Experience supporting testing within secure or regulated environments.
• Strong analytical, troubleshooting, and communication skills.
• Ability to manage changing priorities and work to project timelines.
• Experience working within Agile or structured delivery environments.
• Competency in MS Office Suite.
• Must hold, or be eligible to obtain, UK Security Clearance (SC) and be prepared to undergo DV clearance if required.

Desired skills and experience

• Experience of interoperability testing within Defence, NATO, or coalition environments.
• Knowledge of Federation Mission Networking (FMN) standards, particularly FMN Spiral 6.
• Experience validating Data Centric Interoperability (DCI) or information-sharing capabilities.
• Experience with Federated Identity and Access Management (FIAM) solutions.
• Knowledge of Data Centric Security concepts, policy enforcement technologies, and metadata-based information handling controls.
• Experience supporting PKI implementations and certificate-based authentication services.
• Experience with virtualised environments (e.g. VMware, VDI, multi-tenancy).
• Exposure to military, Defence Digital, OpNET, or NSoIT(D) information systems.
• Experience with test management and collaboration platforms (e.g. JIRA, Confluence).
• Experience supporting formal verification, validation, demonstration, and acceptance activities.
• Relevant certifications (e.g. ISTQB Foundation/Practitioner, Security+, VMware VCP, or equivalent).
• Familiarity with Agile (SAFe) and Waterfall delivery methodologies.

Eligibility Checks

Candidates must be SC cleared UK nationals.

Please note: We cannot accept any applications from candidates currently working on the Aurora framework unless the contract is due to finish within the next month.

Please note: For security reasons this role is open to sole UK nationals only. A ‘sole UK national’ refers to an individual who holds citizenship solely in the UK, without dual citizenship or nationality from another country. We do not offer visa sponsorship.