Senior Mechanical Systems Engineer; HVAC & Environmental Controls

Senior Mechanical Systems Engineer (HVAC & Environmental Controls)

We are seeking an experienced Senior Mechanical Systems Engineer to spearhead the design, integration, and long‑term operation of critical environmental control systems for a state‑of‑the‑art manufacturing facility. This role is essential for maintaining rigorous temperature, humidity, and particle‑count standards required for high‑precision production environments. Initially based in the Tempe and Peoria, AZ area during the infrastructure and commissioning phase, you will transition into a permanent leadership role as our flagship Peoria facility moves into full‑scale factory operations.

• System Design & Project Lifecycle:
  Collaborate with design consultants to ensure mechanical and airflow requirements are met for cleanroom environments, administrative spaces, and specialized exhaust systems.
• Commissioning & Startup:
  Lead equipment preparation and operational testing; resolve technical abnormalities during the critical transition from construction to active production.
• Handover Management:
  Oversee transfer of documentation, manuals, and SOPs from build team to sustaining engineering team.
• Operational Excellence & Abatement:
  Provide advanced engineering support for MUA units, RCUs, acid scrubbers, and complex solvent abatement (RCTO) systems.
• Environmental Stability:
  Manage OCAP conditions, ensuring cleanroom temperature, humidity, and pressure levels remain within strict tolerances.
• Infrastructure Support:
  Direct maintenance and troubleshooting of office‑side HVAC, including AHUs and VAV systems.
• Capacity Planning:
  Conduct trend analysis and system evaluations to forecast production demands and identify necessary capital upgrades.
• Efficiency Initiatives:
  Partner with maintenance to implement energy‑saving technologies and improve reliability using FMEA and root‑cause analysis.
• Tool Integration:
  Review exhaust designs during equipment hook‑up and perform engineering inspections for new production assets.

• Bachelor’s degree in Mechanical Engineering or related technical field.
• 5+ years of HVAC engineering experience within high‑tech manufacturing, pharmaceutical, or aerospace environments.
• Deep understanding of chilled water systems, cooling towers, and ISO cleanroom standards.
• Expert ability to interpret engineering specifications and proficiency in AutoCAD, Revit, and Bluebeam.
• Strong analytical skills focused on reliability engineering and troubleshooting complex airflow systems.
• Field capability: ability to climb ladders, work at elevation, navigate confined spaces, and work in varying weather conditions.
• Physical fitness: able to lift 50 lbs and maintain medical qualification for respirator use.
• Professional Engineering (PE) license is a significant advantage.
• Location & mobility: ability to work onsite at Tempe and Peoria with hybrid flexibility as the project matures.