Electrification - Process Automation Engineer

About the Role

At Siemens Mobility, we empower transport providers worldwide to realize sustainable mobility solutions. As a leading technology company, we combine the real and digital worlds like no other in rail. In an open ecosystem, we bring together rolling stock, rail infrastructure, customer service, and software to enable sustainable, comfortable, and cost-effective rail traffic today.

Transform the everyday through your role in creating sustainable transport solutions.

Siemens Mobility Thailand is looking for a Process Automation Engineer (Junior level) for Network Control Systems in the field of Railway Electrification in Bangkok.

Responsibilities

• Develop and deliver process automation engineering solutions for DC and AC Traction Power Supply (TPS) substations, including control, protection, and software design documentation.
• Design and configure substation control systems, protection relays, and HMI/GUI applications, while supporting internal and customer acceptance testing activities.
• Provide technical support during manufacturing, installation, and commissioning phases by troubleshooting issues and responding to technical inquiries.
• Coordinate technical interfaces and integration of electrical systems within traction and service substations, ensuring seamless system functionality and compliance.
• Manage assigned engineering work packages and support bid, project execution, and customer/supplier technical discussions through effective planning, coordination, and stakeholder engagement.

Qualifications

• Bachelor’s degree or higher in Electrical Engineering, Automation Engineering, Electronics, Control & Instrumentation, or a related discipline, with 1-3 years of relevant experience in power distribution, electrical control, protection, and automation systems.
• Hands-on experience with PLC and HMI systems, preferably Siemens SIMATIC products (STEP7, WINCC, TIA Portal), with knowledge of IEC 61131-3, C/C++, C#, and software engineering principles.
• Familiarity with industrial communication protocols and standards, including Profinet, Profibus, Modbus, DNP3, IEC 60870-5-101/104, and IEC 61850, as well as communication networks and supervisory control systems.
• Basic knowledge of traction power supply systems, substation control and protection, energy transmission and distribution, and relevant European and international standards; experience with Power SCADA, commissioning, and digital protection relays is an advantage.
• Strong English communication skills with the ability to work in international and multicultural project environments, develop scalable software solutions, leverage AI-enabled tools, and contribute to railway electrification and process automation projects.

Benefits

• Flexible working arrangements
• Flexible Benefits Program for employees & dependents
• Medical Insurance for Spouse and Children
• Siemens Share Options
• National & International opportunities
• Positive, inclusive and relaxed working environment