25 kV Power Supply Design Engineer

About the role

The 25 kV Power Supply Design Engineer will lead the engineering, design and technical coordination of 25 kV traction power supply systems for railway projects, including high‑speed and conventional lines. Working within SYSTRA’s international multidisciplinary teams, the engineer will ensure that all power supply solutions meet project requirements, railway standards and safety regulations.

Key responsibilities

• Design 25 kV AC and 2×25 kV autotransformer traction power systems, producing functional specifications and architecture diagrams.
• Define and size traction substations, AT posts, switching stations, sectioning and paralleling posts; create single‑line diagrams, layout drawings and cable routing.
• Prepare equipment specifications, Bill of Quantities and LV auxiliary power supply designs.
• Coordinate interfaces with civil works, OCS, SCADA, signalling, telecom and rolling‑stock teams.
• Perform load‑flow, short‑circuit, voltage‑drop, harmonic and power‑quality studies, as well as earthing, bonding and EMC analyses.
• Support FAT/SAT procedures, produce as‑built documentation and contribute to protection coordination and RAMS assessments.

Required profile

• Strong background in railway electrical engineering and traction power supply design.
• Experience with SCADA interfaces, protection systems, earthing and bonding concepts.
• Ability to work across feasibility, detailed design, procurement, construction, testing and commissioning phases.
• Familiarity with EN, IEC, UIC and local railway standards.

Required skills

• Railway electrical engineering
• Traction power system design (25 kV AC, 2×25 kV autotransformer)
• SCADA integration
• Protection system design
• Earthing and bonding
• Load‑flow and short‑circuit analysis
• Voltage‑drop, harmonic and power‑quality studies
• Electromagnetic compatibility (EMC)
• RAMS assessment
• Compliance with EN/IEC/UIC standards