Water Treatment Controls Engineer – PLC/SCADA Automation

Pure Aqua, Inc.; Santa Ana (CA); On-site; USD 75,000 - 110,000; Full time

Benefits offered by this job

401(k)

401(k) matching

Health insurance

Paid time off

Vision insurance

Job summary

Pure Aqua, Inc. is seeking an experienced Controls Engineer to support automation for RO systems, filtration plants, containerized systems, and custom water treatment solutions.

You will design, test, and commission PLC and HMI systems, develop control logic, and optimize control panels for scalable solutions. The role requires hands-on programming in Studio 5000, familiarity with HMI platforms such as FactoryTalk View, and the ability to travel 10–20% for FAT, commissioning, and customer

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.

Responsibilities

• Program, test, and troubleshoot PLC & HMI systems for Pure Aqua equipment.
• 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.

Skills

PLC programming

P&ID reading

Electrical schematics

Education

Bachelor's degree in Electrical Engineering, Automation, Mechatronics, or equivalent

Tools

Studio 5000

FactoryTalk View

Ignition/Wonderware/WinCC

Job description

Pure Aqua, Inc. is seeking an experienced Controls Engineer to support automation for RO systems, filtration plants, containerized systems, and custom water treatment solutions.

You will design, test, and commission PLC and HMI systems, develop control logic, and optimize control panels for scalable solutions. The role requires hands-on programming in Studio 5000, familiarity with HMI platforms such as FactoryTalk View, and the ability to travel 10–20% for FAT, commissioning, and customer