Z

Zeiss

Manufactures high-precision optical instruments and devices

Senior HVAC Technician

Full-TimeUpdated on 10/23/2026
$34 - $43/hr+ Performance bonus + Sales commission
Senior
Ontario, CA, USA
In PersonOnsite; Monday through Friday, 7:00 a.m. to 3:30 p.m.
Building TradesHVAC & Building Systems
Company Does Not Provide H1B Sponsorship

About the job

Requirements
  • A high school diploma or equivalent and completion of an HVAC trade school or equivalent technical training are required.
  • EPA Section 608 Universal Refrigerant Certification is required.
  • At least 5 years of HVAC maintenance experience in commercial, industrial, or manufacturing environments is required.
  • Hands-on experience troubleshooting HVAC mechanical systems, refrigeration systems, chilled water systems, air handling equipment, and HVAC controls and sensors is required.
  • Ability to read and interpret mechanical drawings, schematics, and equipment manuals is required.
  • Strong troubleshooting, analytical, and problem-solving skills are required.
  • Ability to prioritize multiple tasks and respond effectively to emergency equipment failures while maintaining customer service is required.
  • Organizational and documentation skills, including experience maintaining accurate records in a computerized maintenance management system, are required.
  • Ability to work independently with minimal supervision and provide technical guidance and mentoring to junior maintenance technicians is required.
  • Verbal and written communication skills and the ability to work with Production, Engineering, Quality, contractors, and leadership are required.
  • A valid California driver's license with an acceptable driving record is required.
  • Ability to lift and carry up to 50 pounds is required.
  • Ability to frequently climb and descend building and roof-access ladders is required.
  • Ability to work from ladders, lifts, and elevated platforms for extended periods is required.
  • Ability to work in mechanical rooms, manufacturing areas, and controlled environments, including cleanrooms, is required.
  • Ability to stand, walk, bend, kneel, and work in various positions for extended periods is required.
  • Ability to respond to emergency maintenance situations as needed is required.
  • Appropriate safety procedures and personal protective equipment must be used as required.
Responsibilities
  • Perform preventive maintenance, inspections, troubleshooting, and repairs on commercial and industrial HVAC systems.
  • Maintain and troubleshoot air handling units, rooftop units, variable frequency drives, chillers, chilled water and glycol cooling systems, boilers, heating systems, exhaust systems, pumps, valves, and related mechanical equipment.
  • Diagnose system failures, identify root causes, and implement corrective actions.
  • Monitor and maintain required temperature, humidity, airflow, and pressure conditions throughout the facility.
  • Maintain HVAC systems supporting ISO-classified manufacturing and laboratory environments.
  • Help ensure cleanroom environmental requirements are consistently maintained, including temperature, humidity, airflow, and pressure relationships.
  • Troubleshoot environmental excursions and support implementation of corrective actions.
  • Follow cleanroom gowning, contamination control, and other applicable procedures when entering controlled environments.
  • Perform scheduled preventive maintenance using the Facilities CMMS, MPulse.
  • Document maintenance activities, findings, repairs, and recommendations accurately in the CMMS.
  • Identify equipment deficiencies and recommend improvements to enhance system reliability and performance.
  • Support facility and equipment uptime goals by proactively identifying and addressing potential issues.
  • Monitor and troubleshoot HVAC controls through the Building Automation System.
  • Identify alarms, abnormal operating conditions, and equipment trends.
  • Work with controls contractors and other technical resources when advanced troubleshooting or repairs are required.
  • Perform work in accordance with applicable safety and quality requirements, including OSHA requirements, Lockout/Tagout procedures, electrical safety practices, company Environmental, Health and Safety policies, and quality system requirements.
  • Maintain accurate maintenance records and documentation.
  • Support internal and external audits by providing required documentation and technical information.
  • Follow applicable procedures and requirements associated with a medical device manufacturing environment.
  • Support HVAC installation projects, equipment upgrades, and facility improvement initiatives.
  • Assist with contractor coordination and verify that work is completed according to specifications and requirements.
  • Provide technical expertise and recommendations for HVAC-related projects and facility improvements.
Desired Qualifications
  • Experience in cleanrooms or other controlled environments is highly desirable.
  • Experience in medical device manufacturing is highly desirable.
  • Experience in pharmaceutical manufacturing is highly desirable.
  • Experience in semiconductor manufacturing is highly desirable.
  • Experience in other regulated manufacturing environments is highly desirable.
  • Experience with Building Automation Systems (BAS) is preferred.
  • Experience using Computerized Maintenance Management Systems (CMMS), such as MPulse or similar platforms, is preferred.
  • Knowledge of ISO cleanroom requirements and environmental monitoring is preferred.
  • Working knowledge of cGMP, FDA, ISO 13485, and other requirements associated with regulated manufacturing environments is highly desirable.

About the company

ZEISS is a global leader in optics and optoelectronics, serving medical professionals, industrial manufacturers, consumers, and the semiconductor industry. It designs and sells high-precision optical instruments, medical devices, semiconductor manufacturing equipment, and vision care products such as corrective lenses and eye-health services. Its products rely on advanced optics and imaging technologies to deliver accurate inspection, diagnosis, and manufacturing outcomes across healthcare, industrial quality control, consumer optics, and chip fabrication. What sets ZEISS apart is its breadth and depth: a long-standing scale in multiple markets, integrated solutions across optics, imaging, metrology, and precision engineering, and a commitment to sustainability in electricity use and carbon emissions. The company’s goal is to advance optics and optoelectronics by providing reliable, high-quality tools and services worldwide while operating in a sustainable way.

Company Size

1,001-5,000

Company Stage

Growth Equity (Non-Venture Capital)

Total Funding

$67.7M

Headquarters

Oberkochen, Germany

Founded

2001

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Simplify's Take

What believers are saying

  • First-half 2025/26 revenue reached €5.841 billion, with EBIT rising to €955 million.
  • ZEISS CLINIC 360 won FDA 510(k) clearance on August 19, 2026.
  • EURETINA 2026 launches expanded retina imaging, cataract systems, and DORC brand integration.

What critics are saying

  • ZEISS Meditec plans up to 1,000 cuts by 2029, signaling margin pressure.
  • Göttingen workers entered mediation in February 2026 after Zeiss targeted roughly 140 jobs.
  • ASML scanner timing controls ZEISS SMT revenue; any slip delays optics demand immediately.

What makes Zeiss unique

  • ZEISS supplies ASML's exclusive EUV optics, anchoring High-NA lithography through 2030.
  • ZEISS Medical Technology bundles imaging, software, and surgery across one ophthalmic workflow stack.
  • ZEISS CLINIC 360 and Collaborative Care tie devices, cloud analytics, and referrals together.

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Benefits

  • Health Insurance
  • 401(k) Retirement Plan
  • Paid Vacation
  • Performance Bonus

Growth & Insights and Company News

6 month growth

5%

1 year growth

4%

2 year growth

4%
Yahoo Finance
Oct 26th, 2026
Bronwyn Brophy O'Connor to lead Carl Zeiss Meditec as CEO from December 1, 2026

Bronwyn Brophy O'Connor, currently chief executive officer of Sweden's Vitrolife Group, will become CEO of Carl Zeiss Meditec AG on December 1, 2026. She will also join the Executive Board of Carl Zeiss AG, where she will lead the Medical Technology segment. She succeeds Andreas Pecher, who has served as interim CEO since January 1, 2026, alongside his role as chief executive of the ZEISS Group. Her appointment was first announced in May 2026. Brophy O'Connor has led Vitrolife since 2023. Her earlier roles include posts at Johnson & Johnson, Medtronic, and Thermo Fisher Scientific. Justus Wehmer will serve as chief financial officer of Carl Zeiss Meditec. The company generated revenue of €2,228 million in fiscal year 2024/25.

PR Newswire
Oct 22nd, 2026
ZEISS launches CT LUCIA 621P monofocal lens in Japan, expanding its Cataract Workflow

ZEISS Medical Technology has launched its CT LUCIA 621P monofocal intraocular lens (IOL) in Japan, adding it to the ZEISS Cataract Workflow. The company announced the move on October 22, 2026. The lens uses a proprietary asphericity concept to account for the natural misalignment between the cornea centre and the eye's optical axis. ZEISS says this supports consistent visual outcomes across a wide range of patients. It also has a reinforced optic-haptic junction and step-vaulted C-loop haptics, designed to ease centring and help keep the lens stable in the bag. ZEISS will show the lens at the 80th Annual Congress of Japan Clinical Ophthalmology in Kyoto from October 29 to November 1, 2026.

Associated Press
Oct 12th, 2026
ZEISS launches NLX X-ray inspection and DUNE wafer warpage correction for advanced chip packaging

ZEISS Semiconductor Manufacturing Technology (SMT) has launched two systems for advanced chip packaging: ZEISS NLX and ZEISS DUNE. The company announced them in San Francisco on October 12, 2026, as chips grow more complex. ZEISS NLX inspects the inside of chip packages without damaging them. It helps manufacturers spot defects in connections between stacked dies early, and it handles 300-millimetre wafers in both process development and high-volume production. ZEISS DUNE measures the topography of a wafer and corrects wafer bow individually. This helps avoid yield losses in downstream processing and prepares bonding processes. ZEISS SMT is showing the systems at SEMICON West, alongside its photomask tools. The company is also marking 100 years of business in the US in 2026.

PR Newswire
Sep 24th, 2026
ZEISS unveils retinal imaging and surgical innovations at EURETINA 2026

ZEISS Medical Technology has announced expansions to its ZEISS Retina Workflow at the EURETINA 2026 congress in Vienna. The company introduced the ZEISS ALTA DUO 300, combining OCT and fundus imaging in a single device for streamlined retinal diagnostics. ZEISS also unveiled the HMDmd CR3, a head-mounted 3D display that connects with the ZEISS ARTEVO 850 surgical microscope. The company reported that its DORC ILM-BLUE and DORC MEMBRANEBLUE-DUAL vitreoretinal surgical dyes reached a 3 million milestone. Additionally, ZEISS announced that the DORC brand will be consolidated under the ZEISS brand name, unifying the company's ophthalmic offerings. The DORC TDC VELOCE cutter continues to show improvements in 27G vitrectomy procedures, with clinical data suggesting up to 41% shorter core vitrectomy times.

PR Newswire
Sep 17th, 2026
ZEISS expands retinal imaging portfolio with new ALTA DUO 300 multimodal OCT device

ZEISS Medical Technology has expanded its retinal imaging portfolio with the launch of ZEISS ALTA DUO 300, a fully automated, compact multimodal imaging solution. The device combines optical coherence tomography (OCT) and fundus photography in a single unit, designed to provide efficient retinal assessment for eye care practices. The ALTA DUO 300 features four key diagnostic technologies: automated structural OCT with reference database and reporting, true colour fundus camera, AI-enhanced OCT-Angiography, and full chamber depth anterior OCT scanning. The device aims to integrate retinal imaging into everyday patient care through simplified workflows. The product will be showcased at the European Society of Retina Specialists congress in Vienna from 1-4 October and will be available in select markets later in 2026.