Controls Engineer

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 (Ether Net/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 Factory Talk 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)PTO & paid holidays Career growth within a stable, global water treatment company Hands‑on, engineering‑focused work environment

Job Type: Full‑time

Pay: $75,000.00 – $110,000.00 per year 401(k)401(k) matching Health insurance Paid time off Vision insurance

Education: Bachelor’s (Required)

Location: Santa Ana, CA 92704 (Required)