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PLC HMI Controls Technician, Mobile Water Business

Aquatech
Pasadena, TX Full Time
POSTED ON 9/30/2026
AVAILABLE BEFORE 10/28/2026
At Aquatech, we tackle the challenges of water scarcity and complexity by leveraging technology, expertise, and financing to deliver comprehensive solutions that reduce carbon and recycled water footprint. As a leading global provider of water and process technology solutions, we help the world's most recognized companies achieve their sustainability and operational goals by implementing innovative approaches for water reuse, desalination, minimal and zero liquid discharge, and critical minerals recovery. Our work catalyzes the transition toward a more sustainable future and showcases our commitment to addressing water's role in climate adaptation. Learn more at www.aquatech.com.

We are looking for an Instrument and Controls Technician for our service center in Pasadena, TX. This facility caters to our mobile assets and water treatment chemicals business. This is a full-time position (Monday – Friday, 8:00 am to 5:00 pm). The Technician will perform the duties described in the job description below and will be considered a Non-Exempt employee.

The ideal candidate will have excellent problem-solving skills, be creative, have good communication skills, be team-oriented, customer service-oriented, and have excellent math skills. This candidate will also have previous relevant experience working in a similar position. Water treatment and chemical facility experience required, preferably in Ion Exchange, Membrane processes, and Filtration.

Job Description

  • Troubleshooting of electrical equipment such as motors, variable frequency drives, motorized valves, etc.
  • Continuity, Megger, or ground fault testing
  • Maintenance of Allen-Bradley PLC and HMI for machine-mounted controls
  • Calibration of instruments, analyzers, and valve positioners
  • Advice on spare parts maintenance and inventory
  • Prepare calibration and maintenance reports
  • Coordinate with subcontractors for any work needing an outside contractor
  • Housekeeping duties as needed
  • Be the electrical maintenance lead and schedule preventative maintenance on all electrical and electronic components in the facility and the rental assets.

Skill Requirements

  • Ability to troubleshoot and debug Programmable Logic Controllers and HMI
  • Ability to handle modern instrumentation and control equipment such as transmitters, automatic valves, analyzers, sensors, and VFD
  • Ability to monitor the performance of rotating equipment
  • Ability to communicate effectively with customers and maintain a positive attitude and good organizational skills
  • Ability to plan and manage multiple tasks or projects
  • Ability to apply common sense understanding to carry out instructions furnished in written, oral, or diagram form
  • Attention to detail and being a team player
  • Ideal candidates will have operating and troubleshooting experience at an industrial water treatment plant with one or more of the following technologies: Pre- treatment (P.T), Demineralization (DM), Reverse Osmosis (RO), Ultra-filtration, EDI, Thermal Desalination, and Zero-Liquid Discharge.
  • Hazwopper safety training or certification will be a plus.
  • Forklift certification will be a plus
  • Other duties as assigned

Benefits

Aquatech offers a comprehensive benefits package, including paid time off, company-paid holidays, and a 401 (k) plan. All benefits are based on eligibility.

Essential Functions

To perform this job successfully, an individual must be able to perform each essential duty satisfactorily. The requirements listed above and below are representative of the knowledge, skill, and/or ability required. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.

Physical Job Demands

Exerting up to 50 pounds of force occasionally and/or a negligible amount of force frequently or constantly to lift, carry, push, pull, or otherwise move objects, including the human body. Sedentary work involves sitting most of the time, limited walking, and standing.

Qualifications

  • Three (3) or more years of relevant experience.
  • Technical School Degree (Preferred)

Salary.com Estimation for PLC HMI Controls Technician, Mobile Water Business in Pasadena, TX
$65,322 to $83,093
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