Climatic Comfort System Engineer H/F

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Climatic Comfort System Engineer H/F

Date: 12 Feb 2026

Company: Alstom

At Alstom, we understand transport networks and what moves people. From high-speed trains, metros, monorails, and trams, to turnkey systems, services, infrastructure, signalling and digital mobility, we offer our diverse customers the broadest portfolio in the industry. Every day, more than 80 000 colleagues lead the way to greener and smarter mobility worldwide, connecting cities as we reduce carbon and replace cars.

(English translation)

Could you be the full-time Climatic Comfort System Engineer in St Ouen in France we’re looking for?

Your future role:

Take up a new challenge and use your expertise in design and climatic comfort to define solutions at car level using an innovative approach. Reporting to Nadine MOUSSA (Power & Driving, Climatic Comfort Technical Team Manager) , you will work alongside multicultural and inclusive teams and collaborate with the Train System community.

You will be part of the Train System Office, where your role will be to develop standard climatic comfort solutions and ensure their deployment on projects.

You will reinforce the Right First Time pass climate comfort culture across Alstom's global sites. On a day-to-day basis, you will work closely with teams from the rolling stock business (high-speed, tramway, metro, regional, etc.), providing expert answers and guiding towards optimization.

We’ll look to you to:

• Lead climate comfort activities: define subsystem design with suppliers, ensure on-train validation, lead stakeholder meetings
• Lead and participate in the Climate Comfort Network worldwide
• Support project and tender activities for various Alstom sites
• Ensure the deployment of standard solutions on projects
• Propose innovative solutions, from design to demonstration

All about you:

• Graduate with a Master's degree in mechanical engineering, you have strong expertise in railway/thermal/fluid-AeroX/CFD/HVAC/vehicle architecture design (minimum 3 to 5 years).
• Strong knowledge of thermodynamics
• Familiarity with climate comfort load calculations and the design and architecture principles of heating, ventilation and air-conditioning systems.
• Good understanding of the role of systems/subsystems on climate comfort performance and good trade-off skills.
• Good understanding of cost models for HVAC systems, ductwork, glazing and flooring that contribute to climate comfort.
• You have good communication and organisational skills (ability to meet deadlines). You are results-oriented, intellectually curious and creative.
• You are fluent in English and are keen to work independently in an international environment and to take up the challenges of the new Alstom.
• Proactivity, attention to detail and a caring attitude are important. Good communication and interpersonal skills.
• Conflict management and multi-tasking. Customer focus / management skills.

Things you’ll enjoy:

• Join us on a life-long transformative journey – the rail industry is here to stay, so you can grow and develop new skills and experiences throughout your career. You’ll also:
• Enjoy stability, challenge and a long-term career without a boring daily routine.
• Work with cross-functional teams and helpful colleagues
• Contribute to innovative projects
• Take advantage of our open working environment
• Direct your career in the direction of your choice, across functions and countries
• Benefit from our investment in your development, through award-winning training.
• Benefit from a fair and dynamic remuneration system that recognizes your performance and potential, as well as comprehensive and competitive social security cover (life insurance, health insurance, pension).

You don’t need to be a train enthusiast to thrive with us. We guarantee that when you step onto one of our trains with your friends or family, you’ll be proud. If you’re up for the challenge, we’d love to hear from you!

Important to note

As a global business, we’re an equal-opportunity employer that celebrates diversity across the 63 countries we operate in. We’re committed to creating an inclusive workplace for everyone.