Role: Mechanical Start-Up Manager Location: UK Contract Type: Outside IR35 (12 Month) Mint Selection are currently partnered with a leading IPP delivering large-scale energy infrastructure across the UK. They are seeking an experienced Mechanical Start-Up Manager to join the team on a long-term contract basis to oversee the mechanical commissioning phase of a major gas peaking project. Scope of Work: * Lead the mechanical start-up and commissioning phase from construction handover through to commercial readiness * Oversee installation verification, system filling, flushing, pressure testing, and mechanical completion * Coordinate with construction, engineering, QA/QC, and operations teams to ensure system readiness * Supervise and guide contractors, technicians, and OEM representatives during start-up activities * Manage commissioning documentation, including checklists, redlines, test records, and certifications * Ensure compliance with design specifications, safety protocols (LOTO, confined space, pressure systems), and quality standards * Conduct on-site inspections and support the resolution of mechanical issues during start-up * Interface with project leadership, vendors, and cross-disciplinary teams (electrical, controls, civil) * Contribute to system handover, performance testing, and operational transition * Provide technical input into lessons learned and commissioning strategy for future phases Requirements: * Minimum 5 years of mechanical commissioning/start-up experience, ideally in power generation or gas peaking * Proven ability to manage the transition from construction to commissioning of rotating equipment, piping, and auxiliary systems * Strong working knowledge of gas turbines, fuel gas systems, lube oil, cooling water systems, and mechanical interlocks * Competent in reading P&IDs, mechanical schematics, and managing system turnover * Familiar with safety procedures related to mechanical systems (e.g. LOTO, pressure testing) * Excellent communication and leadership skills in a field-based environment If interested, please apply within or contact Harry Arnold on (phone number removed) for further information