Mechanical Supervisor – Construction Location: Cardiff Contract: 26-week contract Rate: Day rate (DOE) Start: March 2026 We are seeking an experienced Mechanical Supervisor for a construction project in Cardiff, overseeing air conditioning, ventilation, plumbing and other associated works. Key Duties: * Supervise mechanical operatives and subcontractors on site * Oversee installation of AC, ventilation, and plumbing systems * Ensure works meet drawings, programme, and quality standards * Maintain high health & safety standards * Liaise with site management and other trades Requirements: * Proven experience in a Mechanical Supervisor role * Strong knowledge of AC, ventilation, and plumbing * SSSTS (essential) * First Aid at Work (essential) * Valid CSCS card * Ability to read mechanical drawings