PLC & SCADA Engineer

The PLC & SCADA Engineer is responsible for the design programming testing commissioning troubleshooting and maintenance of PLC HMI and SCADA systems for water and wastewater treatment plants. The role involves integrating instrumentation electrical systems VFDs analyzers and field devices to ensure reliable plant operation and compliance with project specifications.

Key Responsibilities

Engineering & Design

Design PLC control systems for water and wastewater treatment plants.

Develop PLC software in accordance with project specifications and functional design documents.

Design and configure SCADA and HMI applications for plant monitoring and control.

Prepare control philosophies I/O lists network architecture and automation documentation.

Review P&IDs electrical drawings and control panel drawings.

PLC Programming

Develop PLC programs for treatment processes:

Configure communication protocols such as:

o Modbus RTU/TCP

o Profibus

o Profinet

o Ethernet/IP

o OPC

SCADA Development

Develop graphical SCADA screens.

Configure alarms and event logging.

Configure historical trending and reporting.

Implement user access levels and security.

Integrate PLCs with SCADA servers.

Commissioning

Perform FAT (Factory Acceptance Test).

Perform SAT (Site Acceptance Test).

Commission PLC and SCADA systems at site.

Conduct I/O testing and loop checking.

Troubleshoot automation and communication issues.

Support plant start-up activities.

Instrumentation & Electrical Coordination

Interface with field instruments including:

o Flow meters

o Pressure transmitters

o Level transmitters

o pH analyzers

o Conductivity analyzers

o DO analyzers

o Turbidity analyzers

o Chlorine analyzers

Coordinate with electrical and mechanical teams during installation and commissioning.

Documentation

Prepare:

o Functional Design Specifications (FDS)

o Operation Manuals

o Commissioning Reports

o As-built Documentation

o Backup of PLC and SCADA programso Technical Reports

Required Qualifications

Bachelors Degree in Automation Engineering / Electrical Engineering Electronics Engineering Instrumentation Engineering.

38 years of experience in industrial automation.

Minimum 5 years of experience in Water or Wastewater Treatment projects.

Required Technical Skills

PLC Platforms

Siemens (S7-1200 S7-1500 TIA Portal) (S7-300S7-400H)

Allen-Bradley (Rockwell)

Schneider Electric

Mitsubishi

Omron (preferred)

SCADA Platforms

Siemens WinCC TIA PORTAL

FactoryTalk View

WinCC Unified (preferred)

WINCC SCADA

HMI

Siemens Comfort Panels

Weintek

Software

Siemens TIA Portal

WinCC

AutoCAD

Microsoft Office

Preferred Experience

Candidates with experience in the following will be highly preferred:

Wastewater Treatment Plants (WWTP)

Sewage Treatment Plants (STP)

Water Treatment Plants (WTP)

Reverse Osmosis (RO) Plants

UF/MBR Systems

Pumping Stations

Industrial Water Treatment

Desalination Plants

Key Competencies

PLC Programming

SCADA Development

Automation System Design

Process Control

Instrumentation

Electrical Troubleshooting

Commissioning

Industrial Networking

Problem Solving

Teamwork

Communication Skills

Time ManagementPreferred Certifications

Siemens Certified Programmer

Rockwell Automation Certification

Schneider Electric Automation Certification

ISA Certified Automation Professional (CAP) (preferred)

Valid UAE Driving License (preferred)