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Senior OCS Engineer (Overhead Catenary System)

Vacancy details

General information


Egis is an international player active in the consulting, construction engineering and mobility service sectors.
We design and operate intelligent infrastructure and buildings capable of responding to the climate emergency and helping to achieve more balanced, sustainable and resilient territorial development.
With operations in 120 countries, Egis places the expertise of its 18,000 employees at the disposal of its clients and develops cutting-edge innovation accessible to all projects.
Improving people's quality of life and supporting communities in their social and economic development, whilst drastically reducing carbon emissions and achieving vital 2050 net zero targets, that's our purpose.



Position description

Job title

Senior OCS Engineer (Overhead Catenary System)

Contract type

Permanent contract

Job description


Within the Power Supply and OCS (Overhead Catenary System) department, you support the development of our project activities in the Asia Pacific Region and internationally.

Particularly, you are supporting the Overhead Catenary System Design Team in their detailed design and turnkey activities.

The OCS Engineer’s main duties consist in carrying out design studies, from feasibility to detailed design phases. This covers :   

  • Pantograph / OHE Dynamic Mechanical simulations
  • OCS Layout plans for yards and corridors, Switching station designs on Mainline and in depot foundation design calculation and
  • Foundation cross section drawings for OHE support structures in yards
  • Profile calculations, contact wire gradient study,  dropper schedule
  • Sag & tension calculations for return conductor & overhead protection conductor
  • Conceptual earthing and bonding report and developing earthing and bonding layout in yards and mainline
  • OCS major components detailed specifications (cantilever, droppers, switcher, disconnectors, auto-tensors, etc..)
  • Interfacing with Traction PSY Deign Team for Wires calculations.

The Sr OCS Engineer is also expected to :

  • Manage CAD Draftmen / BIM modeller to produce the relevant Drawings and digital models
  • Assist on a punctual basis Design Managers in their own duties.
  • Contribute to R&D actions, technical watch and knowledge capitalization
  • Participate to tenders technical proposal / Business development actions


The scope of Works cover :

  • Mass Rapid Transit Systems
  • Suburban train
  • High Speed Rail
  • Light Transit system (Tram)


• Degree in Electrical or Mechanical Engineering
• Qualified professional working under limited supervision capable of performing technical studies and with
• Ability to work in an International Context – Outstanding level of English (oral & writing)
• Strong experience in OCS (Overhead Catenary System) Design in engineering or in industrial / in a construction company.
• Experience on urban transportation and conventional suburban Railway projects required. Experience in High Speed Rail is a plus.
• Experience with BIM is also appreciated.
• Pack Office skills – Mastery of Excel is a must (VBA is a plus).
• Active, strong ability to listen, understand, analyse and communicate
• Serious, outstanding writing skills and synthesis spirit

Position location

Job location

Asia, Thailand



Candidate criteria

Minimum level of education required

6-Engineer’s degree

Minimum level of experience required

6-10 years