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.

• 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.

• Develop PLC programs for treatment processes:
• Configure communication protocols such as:
  • oModbus RTU/TCP
  • oProfibus
  • oProfinet
  • oEthernet/IP
  • oOPC

• 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.

• 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.

• Interface with field instruments including:
  • oFlow meters
  • oPressure transmitters
  • oLevel transmitters
  • opH analyzers
  • oConductivity analyzers
  • oDO analyzers
  • oTurbidity analyzers
  • oChlorine analyzers
• Coordinate with electrical and mechanical teams during installation and commissioning.

• Prepare:
  • oFunctional Design Specifications (FDS)
  • oOperation Manuals
  • oCommissioning Reports
  • oAs-built Documentation
  • oBackup of PLC and SCADA programso
    
    Technical Reports

• Bachelor's Degree in Automation Engineering / Electrical Engineering, Electronics Engineering, Instrumentation Engineering.
• 3-8 years of experience in industrial automation.
• Minimum 5 years of experience in Water or Wastewater Treatment projects.

• PLC Platforms
• Siemens (S7-1200, S7-1500, TIA Portal) ,(S7-300,S7-400H)
• Allen-Bradley (Rockwell)
• Schneider Electric
• Mitsubishi
• Omron (preferred)

• Siemens WinCC TIA PORTAL
• Factory Talk View
• WinCC Unified (preferred)
• WINCC SCADA

• Siemens Comfort Panels
• Weintek

• Siemens TIA Portal
• WinCC
• AutoCAD
• Microsoft Office

• 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/M  Systems
• Pumping Stations
• Industrial Water Treatment
• Desalination Plants

• PLC Programming
• SCADA Development
• Automation System Design
• Process Control
• Instrumentation
• Electrical Troubleshooting
• Commissioning
• Industrial Networking
• Problem Solving
• Teamwork
• Communication Skills
• Time Management Preferred Certifications

• Siemens Certified Programmer
• Rockwell Automation Certification
• Schneider Electric Automation Certification
• ISA Certified Automation Professional (CAP) (preferred)
• Valid UAE Driving License (preferred)