Senior HVAC Maintenance Technician

What youll do Lead preventive/predictive/corrective maintenance across AHUs, chillers, boilers, heat exchangers, VAVs, exhaust, dehumidifiers, and split systemsowning temperature, humidity, airflow, and pressurization in GMP spaces. Ensure cleanroom compliance with ISO 14644: HEPA integrity, airflow patterns, recovery times, and differential pressures; support aseptic areas and gowning zones. Optimize and troubleshoot BMS/EMS/SCADA (Siemens, Allen-Bradley, Johnson Controls): tune PID loops, rationalize alarms, adjust sequences of operation, and document via change control. Coordinate calibration (temperature, RH, pressure, flow) and support IQ/OQ/PQ with solid validation documentation. Drive investigations and CAPA using RCA methods (5-Why, Fishbone) and maintain impeccable cGMP/GDP records and SOPs. Champion audit readiness (FDA/EU GMP) and keep systems in a validated state. Improve energy and performance: VFDs, heat recovery, demand-based ventilation, and smart control strategies. Plan and execute outages/turnarounds/capital projects with contractors, materials, and risk assessments. Lead safety culture (LOTO, confined space, hot work, arc-flash; EPA 608 refrigerants) and mentor junior techs. Manage spares and CMMS workflows; partner closely with Quality, Manufacturing, Engineering, Validation, and Operations. What youll bring Education: Technical diploma/apprenticeship in HVAC/Mechanical/Building Services; bachelors in Mechanical/Building is a plus. Experience: 610+ years in HVAC maintenance, including 35 years in pharma/biotech or regulated GMP environments; cleanroom HVAC experience is essential. Technical strengths: AHUs/chillers/boilers/hydronics, humidity control, HEPA; strong controls/BMS proficiency (PID, trends, data integrity). GMP knowhow: ISO cleanroom classifications, airflow visualization/smoke studies, pressurization cascades, aseptic requirements. Validation: Sensor calibration, IQ/OQ/PQ, GDP, CAPA, Change Control. Diagnostics: Advanced troubleshooting, basics of vibration analysis and thermography; instrumentation (anemometers, micromanometers, particle counters, data loggers). Certifications: Safety training preferred; manufacturer training on chillers/controls and GxP/cleanroom courses are a plus. Soft skills: Clear communication, teamwork, stakeholder management, decisive under time pressure, meticulous documentation. Physical: Lift 50 lbs, ladders/heights/mechanical spaces, PPE for labs/cleanrooms, after-hours/on-call rotation. Why this role Impact that matters: Your work directly supports compliant manufacturing and product quality. Variety and ownership: Complex systems, cross-functional collaboration, and continuous improvement. Growth and mentorship: Be the SME and coach for a high-performing team. Interested? Apply to join our Technical Operations team in Santa Monica or Tarzana and help us keep mission-critical environments running flawlessly. The annual base pay (or hourly rate of compensation) for this position ranges from $71,749.60 - 107,624.40 . Our positions offer eligibility for various incentivesan opportunity to receive short-term incentive bonuses, equity-based awards for salaried roles and commissions for sales roles. Benefits offered include qualified retirement programs, paid time off (i.e., vacation, holiday, and leaves), as well as health, dental, and vision coverage in accordance with the terms of the applicable plans. Date Posted 24-Apr-2026 Closing Date 07-May-2026 Our mission is to build an inclusive environment where equal employment opportunities are available to all applicants and employees. In furtherance of that mission, we welcome and consider applications from all qualified candidates, regardless of their protected characteristics. If you have a disability or special need that requires accommodation, please complete the corresponding section in the application form. AstraZeneca is a global, science-led, patient-focused biopharmaceutical company. We focus on discovering, developing and commercialising prescription medicines for some of the worlds most serious diseases. But we are more than one of the worlds leading pharmaceutical companies. At AstraZeneca, were dedicated to being a Great Place to Work. Where you are empowered to push the boundaries of science, challenge convention and unleash your entrepreneurial spirit. To embrace differences and take bold actions to drive the change needed to meet global healthcare and sustainability challenges. There is no better place to make a difference in medicine, patients, and society. An inclusive culture where you will connect different thinking to generate new and valuable opportunities. Where you will find a commitment to lifelong learning, growth and development for all. Our Inclusion & Diversity (I&D) mission is to create an inclusive and equitable environment where people belong, using the power of our diversity to push the boundaries of science to deliver life-changing medicines to patients. Inclusion and diversity are fundamental to the success of our company, because innovation requires breakthrough ideas that only come from a diverse workforce empowered to challenge conventional thinking. Were curious about science and the advancement of knowledge. We find creative ways to approach new challenges. Were driven to make the right choices and be accountable for our actions. As an organisation centred around what makes us human, we put a big focus on people. Across our business, we want colleagues to wake up excited about their day at the office, in the field, or in the lab. Along with our purpose to bring life-changing medicines to people across the globe, we have a promise to you: to help you realise the full breadth of your potential. Here, youll do work that has the potential to change your life and improve countless others. And, together with your team, youll shape a culture that unites and inspires us every day. This is your life at AstraZeneca.