Maintenance Specialist

At Gilead, we’re creating a healthier world for all people. For more than 35 years, we’ve tackled diseases such as HIV, viral hepatitis, COVID-19 and cancer – working relentlessly to develop therapies that help improve lives and to ensure access to these therapies across the globe. We continue to fight against the world’s biggest health challenges, and our mission requires collaboration, determination and a relentless drive to make a difference.   Every member of Gilead’s team plays a critical role in the discovery and development of life-changing scientific innovations. Our employees are our greatest asset as we work to achieve our bold ambitions, and we’re looking for the next wave of passionate and ambitious people ready to make a direct impact.   We believe every employee deserves a great leader. People Leaders are the cornerstone to the employee experience at Gilead and Kite. As a people leader now or in the future, you are the key driver in evolving our culture and creating an environment where every employee feels included, developed and empowered to fulfil their aspirations. Join Gilead and help create possible, together. Job Description   Senior Maintenance Technician (HVAC) Position Summary Under the supervision of a Team Lead, the Senior Maintenance Technician (HVAC) is responsible for troubleshooting, maintaining, repairing, and optimizing HVAC and related utility systems across the Gilead La Verne site. This role supports GMP manufacturing and facility operations by ensuring critical environmental systems operate safely, reliably, and in compliance with regulatory requirements. Specific Job Responsibilities: • Troubleshoot, repair, and maintain commercial and industrial HVAC equipment, including air handlers, rooftop units, exhaust systems, chillers, cooling towers, pumps, and related mechanical systems. • Perform preventive and corrective maintenance on HVAC and facility utility equipment. • Diagnose system failures using technical manuals, drawings, schematics, P&IDs, and manufacturer documentation. • Monitor and maintain temperature, humidity, differential pressure, and airflow systems that support GMP manufacturing environments. • Support building automation systems (BAS/BMS) and HVAC control troubleshooting. • Coordinate maintenance activities on critical HVAC and utility systems with supervisors and site stakeholders. • Perform filter replacements, belt replacements, bearing lubrication, motor alignments, and other routine mechanical maintenance tasks. • Assist with HVAC system commissioning, qualification support, and performance verification activities. • Support root cause investigations, deviation investigations, and corrective actions related to facility and HVAC systems. • Document maintenance activities using the Computerized Maintenance Management System (CMMS). • Participate in shutdown planning and execution activities. • Perform multi-shift work and respond to emergency call-outs as required. • May be required to perform duties of Maintenance Technician I and II as assigned. Knowledge & Skills: • Strong understanding of HVAC systems, refrigeration cycles, air distribution systems, and mechanical equipment. • Experience troubleshooting chillers, cooling towers, air handling units (AHUs), exhaust systems, VAVs, pumps, and associated controls. • Familiarity with Building Automation Systems (BAS) and Building Management Systems (BMS). • Ability to read and interpret HVAC drawings, mechanical schematics, and P&IDs. • Knowledge of preventive and predictive maintenance practices. • Understanding of GMP-regulated manufacturing environments. • Proficiency with CMMS systems such as Maximo. • Ability to work independently and within a team environment. • Strong troubleshooting, communic