An established engineering and maintenance organisation is seeking an experienced Software Commissioning Test Team Leader to supervise on-site commissioning activities for industrial control systems. The role focuses on ensuring safe, compliant, and accurate testing within complex industrial environments. Key Responsibilities: Supervise on-site software commissioning and testing activities Ensure all work is carried out in accordance with approved commissioning procedures and Safe Systems of Work Review commissioning documentation for suitability and compliance Coordinate commissioning activities with other site teams and attend planning meetings Manage Temporary Commissioning Aids, including approval, application, monitoring, and removal Raise commissioning reservations and manage defects during testing Stop commissioning activities where safety or system integrity is compromised and escalate appropriately Ensure the final plant configuration meets commissioning documentation or agreed standards Manage incidents, make safe, and preserve the scene for investigation Skills & Experience: Hands-on experience with Siemens PLC and SCADA systems Good understanding of control panels, electrical installations, and instrumentation Proven experience in testing and on-site commissioning Strong health & safety awareness Qualifications: ECS Card (or equivalent) - essential SSSTS or SMSTS - preferred