Test Engineer - Systems Integration & Interop (SC)

Quast Ltd; Corsham; Hybrid; GBP 61,000 - 101,000; Full time

Job summary

Quast Ltd seeks a experienced Test Engineer to deliver hands-on testing for the OpNET FMN Spiral 6 DCI Pilot. You will develop, execute and report verification, validation and interoperability tests across infrastructure, security and identity components within secure defence environments.

The role covers test design through execution, validation and reporting, collaborating with architects, engineers and security specialists to ensure compliant delivery and audit-ready evidence.

Qualifications

• 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 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.

Responsibilities

• 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.
• Provide support for Live Ops as required.

Skills

Test engineering

Test planning

Test scripting

Regression testing

Documentation

Agile

Communication

Interoperability testing

Tools

JIRA

Confluence

VMware

VDI

Job description

Quast Ltd seeks a experienced Test Engineer to deliver hands-on testing for the OpNET FMN Spiral 6 DCI Pilot. You will develop, execute and report verification, validation and interoperability tests across infrastructure, security and identity components within secure defence environments.

The role covers test design through execution, validation and reporting, collaborating with architects, engineers and security specialists to ensure compliant delivery and audit-ready evidence.