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The Opportunity:

Engineering authority for projects/tenders with medium to high complexity.  Execution of complete engineering assignments on small, medium or large AC & DC Traction Power Supply Projects/tenders cost effectively and in accordance with contract specifications and quality standards. Based on technical specification from end customers and inputs from OU Engineering team, able to review the study reports, prepare BSS, TSS & SSS layouts and section drawings, Grounding system drawings, Lightning system design, drawings, Cable routings, Bill of materials, RFQs, Vetting of vendor offers, Engg hours estimation, visit to project sites, Technical risk assessment and opportunity evaluation, technical risk assessment and opportunity evaluation etc 

Coordinate with customers, Tendering & Project Team, OUs, Project Manager, SCM, Engineering Manager, Engineering Leads, Secondary and civil / steel design functions, consultants, end customers etc. and provide required support to lead the Project / Tender. 

Candidate must have technical knowledge International Standards related to Railway Electrification field. 

How you’ll make an impact: 

• Design Authority for all Engineering activities in an Electrical power supply system for AC & DC Rail Traction Power Supply (TPS) Substations with reference to International Standards 

• Sizing of the Electrical equipment for development of new power systems. 

• Interaction with sales departments and project management during both, the bid phase, and the project realization phase 

• Collaborate with supply chain function to ensure technical requirements for equipment & services. Provide technical evaluation of supplier’s offers and provide manufacturing clearance 

• Participation in technical liaison meetings with customers, suppliers, and HE internal manufacturing units. Technical management, planning and controlling of own engineering work package 

• Coordinate with other engineers for systems integration and design. Review / Perform load flow simulations and prepare reports 

• Knowledge of power traction simulation software for both AC & DC traction projects.  

• Able to review the outputs of EMC and RAM study, Load flow, short circuit, and Insulation coordination studies & interface for inputs 

• Knowledge of Network Harmonic Study 

• Complete Understanding of Primary design aspects of substations, including SLD, layouts, and overviews, site plans, duct bank and conduit layouts, grounding systems, and auxiliary power supply systems and control circuits 

• Good understanding of protection study, CT VT Sizing, Cable sizing, Protection & Control schemes, LVAC / LVDC supplies, Interlocking, Telecommunication, etc 

• Technical design interface between sub-systems of all AC & DC Traction Power Supply Equipment within the substation.  

• Thorough understanding of railway overhead catenary/third rail distribution systems. Having knowledge about different railway technologies from electrical perspective  

• Prepare / Review the specifications for Rectifier Transformer, Rectifier Unit and DC switchgear & Auxiliary transformer, Medium voltage switchgear 

• Technical data sheets verification of primary equipment. Knowledge of primary equipment, such as circuit breakers, disconnectors, earthing switches, instrument transformers, power transformers, etc 

• Vendor Offer Evaluations.  FAT / SAT of traction power equipment 

• Estimation of engineering effort for each project for costing at tender stage 

• Technical risk and opportunity assessment and validation. Innovative ideas to reduce Engineering efforts. 

Your background: 

• Bachelor degree or higher in Electrical Engineering, ideally in the field of power distribution, electrical control systems having minimum 5 years experience. 

• Knowledge of High-Medium voltage technology with good understanding for system design, manufacture, and installation matters in DC traction power supply 

• Knowledge of digital protection relays 

• Knowledge of measuring, control, and supervisory systems 

• Knowledge of relevant Asian and International Standards  

• Knowledge of engineering processes. 

• Experience in project realization, preferably in an international project environment 

Soft skills:  

• Individual contributor using in-depth knowledge in a specific area to execute complex or specialized projects / challenges often thinking independently to challenge traditional solutions. 

• Comprehensive knowledge of related disciplines in the organization.  

• Works independently, applying established standards 

• Excellent English and Thai, good communication skills 

• Dynamic and Proactive, willing to grow in the organization 

• Team player, ready to play the role across the different countries. High level of ownership 

Accessibility and reasonable accommodation

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Use of Al and automated tools in recruitment

As part of our recruitment process, Hitachi Energy uses digital and automated tools, including Al-supported solutions, to assist with activities such as application screening, job matching, and interview scheduling. These tools are designed to support our recruiters and do not replace human decision-making. Candidate data is processed in accordance with applicable data protection and employment laws as well as Hitachi's Global Data Privacy Notice.

Background Screening and Security Checks

As part of the hiring process, Hitachi Energy conducts pre-employment background checks that may include verification of employment history, education, criminal records, and other relevant information, in accordance with applicable laws.

For certain roles—particularly those involving access to sensitive information, financial responsibilities, client data, regulated environments, or security-sensitive functions—additional or more comprehensive background or security screenings may be required. These may include, but are not limited to, enhanced criminal history checks, credit history reviews (where legally permissible), sanctions screening, or other due diligence measures aligned with the responsibilities of the position.

The scope and depth of any background or security review will be determined based on the nature of the role and business necessity, and will always be conducted in compliance with applicable federal, state, and local laws. Candidates will be notified and, where required, asked to provide consent prior to the initiation of any such checks.