Our client is a global leader in the engineering and construction of large-scale industrial and energy infrastructure. With extensive experience in complex projects, its expansion focuses on developing critical facilities for future technological advancements. We are seeking talents to join our team in building data centers in Zaragoza, a key infrastructure for next-generation digital services. **JOB DESCRIPTION** We are looking for an experienced Mechanical Supervisor with natural leadership skills to oversee the execution of mechanical work in a technological infrastructure construction project. The Mechanical Supervisor will be directly responsible for managing on-site personnel, organizing tasks, and ensuring that all work is carried out according to drawings, quality specifications, and safety regulations. This role is essential for daily site progress and requires a candidate with strong practical experience and leadership capability. **RESPONSIBILITIES** * Daily supervision and coordination of assigned on-site personnel (skilled workers, assistants) during the installation of mechanical systems (HVAC, plumbing, fire protection, piping, etc.). * Interpret blueprints, schematics, and technical specifications to ensure correct work execution. * Organize tasks, assign duties, and monitor workforce performance. * Ensure compliance with health and safety regulations across all activities performed by the team. * Monitor the quality of received materials and completed work, identifying potential deviations and reporting them. * Manage the efficient use of tools, equipment, and machinery assigned to their area. * Assist in resolving minor technical issues arising on-site. * Report work progress, material requirements, and incidents to the site manager or Mechanical Manager. * Maintain order and cleanliness in their work area. * Higher-level vocational training in Thermal and Fluid Systems, Industrial Maintenance, or equivalent. * Minimum of 5 years’ experience as a Mechanical Supervisor or similar role in construction projects, preferably in industrial, commercial, or complex infrastructure settings (Data Centers). * Solid practical knowledge of the assembly, installation, and maintenance of HVAC systems, fire protection, plumbing, piping networks, and pumping equipment. * Demonstrated ability to lead teams, organize work, and solve problems on-site. * Strong commitment to safety and quality in execution. * Good communication skills and teamwork abilities.