PLC & SCADA Engineer

TradesApp; Dubai; On-site; AED 240,000 - 360,000; Full time

Job summary

TradesApp in the United Arab Emirates (Dubai) is seeking a PLC & SCADA Engineer to design, program, test, commission, troubleshoot, and maintain PLC, HMI, and SCADA systems for water and wastewater plants. You will integrate instrumentation, electrical systems, VFDs, analyzers, and field devices to ensure reliable plant operation in line with project specs.

The role covers engineering design, PLC programming, SCADA development, commissioning, instrumentation coordination, and thorough

Qualifications

• Bachelor's degree in automation or electrical engineering required.
• 5+ years in industrial automation and water/wastewater projects preferred.
• Strong PLC/SCADA engineering and commissioning experience.

Responsibilities

• Design PLC control systems for water and wastewater plants.
• Develop PLC software per project specs and FDS.
• Create SCADA/HMI applications for monitoring and control.
• Prepare control philosophies, I/O lists, networks, and docs.
• Review P&IDs, electrical drawings, and control panels.
• Perform FAT/SAT and site commissioning, IO testing, and loop checks.
• Coordinate instrumentation and electrical interfaces during installation.
• Document commissioning reports, oper manuals, and as-built files.
• Integrate PLCs with SCADA servers and implement security and access levels.

Skills

PLC Programming

SCADA Development

Automation System Design

Process Control

Instrumentation

Electrical Troubleshooting

Commissioning

Industrial Networking

Teamwork

Communication Skills

Time Management

Education

Bachelor's Degree in Automation Engineering / Electrical Engineering, Electronics Engineering, Instrumentation Engineering

Tools

Siemens S7-1200/1500, TI A Portal

Allen-Bradley (Rockwell)

Schneider Electric

Mitsubishi

Omron (preferred)

Siemens WinCC TIA Portal

FactoryTalk View

WinCC Unified

Weintek

Siemens TIA Portal

WinCC

AutoCAD

Microsoft Office

Job description

About the role

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:
  • Modbus RTU/TCP
  • Profibus
  • Profinet
  • Ethernet/IP
  • 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:
  • Flow meters
  • Pressure transmitters
  • Level transmitters
  • pH analyzers
  • Conductivity analyzers
  • DO analyzers
  • Turbidity analyzers
  • Chlorine analyzers
• Coordinate with electrical and mechanical teams during installation and commissioning.

Documentation

• Prepare:
  • Functional Design Specifications (FDS)
  • Operation Manuals
  • Commissioning Reports
  • As-built Documentation
  • Backup of PLC and SCADA programso Technical Reports

Required Qualifications

• 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.

Required Technical Skills

PLC Platforms

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

Preferred Certifications

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