Test Specialist, Manufacturing ​/ Production

Role Information

• Test Specialist
• Salary up to £35,000 DOE
• Merthyr Tydfil, South Wales
• Onsite role
• Starting September 2026

This role ensures that all units are tested, inspected, and verified to meet engineering specifications, quality standards, and customer requirements prior to delivery. Working closely with Production, Engineering, and Quality teams, the Test Specialist plays a key role in ensuring product integrity, compliance, and on‑time delivery.

• Support test planning and readiness in line with production schedules and projects
• Review and contribute to test plans, procedures, and work instructions
• Execute in‑process, system‑level, and final acceptance testing (FAT) on assembled units
• Conduct mechanical, electrical, and integrated system testing
• Perform product inspections, fault finding, and diagnostics, ensuring clear reporting of issues
• Identify, raise, and support resolution of non‑conformances (NCRs)
• Ensure all products meet defined quality gates before progression or delivery
• Maintain accurate test records, certification packs, and traceability documentation
• Communicate test progress, issues, and results to key stakeholders
• Support continuous improvement initiatives across test and production processes
• Assist with internal and external audits, ensuring compliance with standards and procedures
• Maintain and calibrate test equipment and instrumentation
• Ensure adherence to 5S and housekeeping standards within the test environment
• Support shift‑based working where required (including day/night rotation)
• Promote and comply with Health, Safety, and Environmental (HSE) requirements
• Ensure compliance with all legal, statutory, and contractual obligations

• Experience with in a manufacturing or production environment
• Background in testing assembled systems, machinery, or containerised units
• Experience working to production schedules and delivery targets
• Knowledge of industry standards and quality frameworks (e.g., ISO 9001)
• Experience assembling, connecting, and operating test instrumentation
• Ability to work both independently and as part of a team

• Ability to interpret engineering drawings, schematics, and technical specifications
• Experience with system‑level testing (mechanical, electrical, or integrated systems)
• Strong understanding of production testing and quality control processes
• Ability to analyse and interpret test data and results
• Experience with Factory Acceptance Testing (FAT) and inspection processes
• Knowledge of non‑conformance reporting (NCR) and root cause analysis
• Familiarity with a wide range of test equipment and instrumentation
• Good mechanical and/or electrical aptitude

• Onsite role
• Successful candidates will be required to complete a BPSS check

• Access to technical training, certifications, and continuous professional development
• Clear career progression to Senior Test Engineer, Test Lead, or Test Manager, with increasing responsibility and leadership opportunities
• Cross‑functional exposure to Production, Quality, and Engineering teams, enabling potential moves into Production, Quality, or Systems Engineering roles

Marshall Group is an equal opportunity employer and values a diverse and inclusive workplace. All qualified candidates will receive consideration for employment without regard to age, race, colour, religion, genetic information, sex, sexual orientation, gender identity, national origin, disability status, or any other characteristic protected by law. For more information about Equal Opportunity in the Workplace please .

We are striving to create an inclusive workplace culture built on trust, accountability, collaboration, and improvement—an environment where everyone feels valued, respected, and able to thrive, free from bullying, harassment, and discrimination. Fostering a positive culture is key to our individual and shared success.