Pure Aqua, Inc. is a global manufacturer of reverse osmosis and water treatment systems serving industrial, commercial, and municipal clients worldwide. We are seeking an experienced Controls Engineer to join our engineering team and support automation for RO systems, filtration plants, containerized systems, and custom water treatment solutions.

Responsibilities

Program, test, and troubleshoot PLC & HMI systems for Pure Aqua equipment (RO, UF/MF, filtration, chemical dosing).
Develop control logic, interlocks, alarms, and automation sequences based on P&IDs.
Program using Allen-Bradley Studio 5000; experience with Siemens or Schneider is a plus.
Configure industrial networks (EtherNet/IP, Modbus, Profinet).
Support control panel design, IO lists, and engineering documentation.
Perform Factory Acceptance Testing (FAT) and onsite commissioning.
Provide technical support to production, service teams, and customers as needed.
Maintain and update Pure Aqua’s standard PLC code structure and templates.
Qualifications

Bachelor’s degree in Electrical Engineering, Automation, Mechatronics, or equivalent work experience.
3+ years of PLC programming experience (preferably in water treatment or industrial automation).
Strong experience with Allen-Bradley PLCs and FactoryTalk View or similar HMI platforms.
Understanding of pumps, VFDs, sensors, instrumentation, and process control.
Ability to read P&IDs, electrical schematics, and panel drawings.
Willingness to travel (10–20%) for commissioning and customer support.
Preferred Experience

Reverse osmosis, ultrafiltration, softeners, or containerized treatment plants.
Experience writing FAT/SAT documents and start-up procedures.
Familiarity with UL 508A, NFPA 79, and control panel standards.
SCADA or data-logging experience (Ignition, Wonderware, WinCC).
What We Offer

Competitive salary (DOE)
Medical, dental & vision insurance
PTO & paid holidays
Career growth within a stable, global water treatment company
Hands-on, engineering-focused work environment
Job Type: Full-time

Benefits:

401(k)
401(k) matching
Dental insurance
Health insurance
Paid time off
Vision insurance
Education:

Bachelor's (Required)
Language:

English (Required)
Ability to Commute:

Santa Ana, CA 92704 (Required)
Work Location: In person

Pay: $75,000.00 - $110,000.00 per year