Senior Automation Engineer

Job Description

Job Summary: We are seeking a Senior Automation Engineer with strong expertise in PLC and SCADA programming to support Hydrogen Refueling Station (HRS) projects across the Gulf Cooperation Council (GCC) countries. This role involves developing automation systems using Siemens TIA Portal and WinCC, integrating field instrumentation, and participating in all phases from design to commissioning. The candidate should have hands-on experience with PLC and SCADA program development and have the capability to select appropriate PLC/SCADA hardware based on project requirements as well as working knowledge of Modbus RTU, Modbus TCP, OPC UA, and cybersecurity requirements for IT/OT systems. Travel for site commissioning and troubleshooting will be required as needed. Key Responsibilities: • Design and develop PLC programs using Siemens TIA Portal for HRS systems and subsystems. • Configure and implement SCADA/HMI systems using Siemens WinCC (Classic/Advanced/Unified). • Integrate and commission pressure, temperature, flow, and other field instruments including signal scaling, calibration validation, and loop testing. • Develop and execute loop check procedures, IO mapping, and functional testing during FAT/SAT. • Implement and troubleshoot communication interfaces using Modbus RTU, Modbus TCP/IP, and OPC UA. • Prepare and maintain technical documentation: IO Lists, Control Philosophy, FDS, wiring diagrams, and test reports. • Travel to site for commissioning, loop checks, and urgent system troubleshooting. • Apply cybersecurity best practices for automation networks, including secure configuration of networked PLC/SCADA systems. • Collaborate with cross-functional teams including process, instrumentation, mechanical, and IT engineers. • Provide technical support to engineering, procurement, and construction teams throughout project lifecycles. Required Qualifications & Skills: • Bachelor’s degree in Electrical, Electronics, Instrumentation, or Automation Engineering. • Minimum 4 years of experience in industrial automation and control systems. • Strong proficiency in Siemens TIA Portal (S7-1200/1500) and WinCC HMI/SCADA platforms. • Hands-on experience with industrial instrumentation (pressure, temperature, flow): scaling, calibration, and loop testing. • Familiarity with instrument wiring, signal conditioning, and analog/digital IO processing. • Working knowledge of Modbus RTU, Modbus TCP/IP, OPC UA, and integration of smart field devices. • Solid understanding of cybersecurity practices and standards applicable to IT/OT environments (e.g. IEC 62443). • Strong analytical and problem-solving abilities. • Willingness to travel across GCC countries for commissioning and support. • Excellent communication, documentation, and team collaboration skills. Preferred Qualifications: • Experience with Hydrogen Refueling Stations or other fuel/gas infrastructure projects. • Certification or formal training in Siemens automation systems. • Familiarity with industrial network architecture, switch configuration, and secure remote access. • Knowledge of SIL-rated instrumentation, SIS, or hazardous area design. • Familiar with Modicon EcoStruxure Work Conditions: • Remote/ Office-based work • Occasional travel to project sites within GCC (e.g. Saudi Arabia, Oman, UAE). • Travel and accommodation support for site assignments