Climatic Comfort Engineer

Date: 15 May 2026

Company: Alstom

The AeroX & Climatic Comfort Engineer contributes to project and tender development by applying engineering processes and domain guidelines within the areas of internal aerodynamics, thermal behaviour, HVAC performance, and climatic comfort
.

The role focuses primarily on thermo‑fluid dynamic simulations and comfort assessments
, using tools such as STAR‑CCM+ and Therm to evaluate airflow distribution, thermal loads, ventilation efficiency, and overall passenger and driver comfort.

The engineer also performs experimental activities, both on mock‑ups (air duct networks, HVAC units, environmental chambers) and on trains, to assess climatic performance during preliminary and final validation.

The position contributes to advanced methods development, R&D initiatives, and cross‑disciplinary innovation activities.

Hierarchical Reporting:

Functional Reporting:

• Climatic Comfort Leaders

Network & Links:

AeroX and Climatic Comfort Core Competence Networks
Experts in Acoustics, Thermal Engineering, Comfort, Structural Engineering, Fire & Smoke, etc.

• Perform CFD simulations for internal aerodynamics and climatic comfort (air distribution, temperature uniformity, draft risk, HVAC efficiency).
• Analyse thermal behaviour of passenger and driver cabins, including heat loads, ventilation rates, and HVAC system performance.
• Support the design and optimization of HVAC units, air ducts, diffusers, intakes, filters, heating and cooling solutions
  .
• Predict climate comfort indicators using standard methodologies and internal best practices (temperature maps, PMV/PPD, local thermal comfort metrics, etc.).
• Define comfort requirements at vehicle and subsystem level.
• Prepare technical documentation for offers and projects concerning climatic performance.
• Plan, participate in, and analyse experiments in environmental chambers, mock‑ups
  , or on‑train tests (cooling/heating curves, airflow measurements, thermal transients).
• Support development of advanced modelling techniques combining internal aerodynamics, thermal loads, and occupant comfort.
• Contribute to R&D programs focused on improving comfort, energy efficiency, and HVAC system integration.
• Interact with AeroX and Comfort experts in other sites to leverage shared knowledge.

• Assess external aerodynamic performance (pressure waves, crosswind, RAM) when needed.
• Support documentation and testing related to train aerodynamics.

• Bachelor’s or Master’s degree in Mechanical Engineering
  , Energy Engineering
  , Aeronautical Engineering
  , or related fields.

• 5+ years in thermo‑fluid dynamics, HVAC, climatic comfort engineering, railway or similar sectors.
• Experience in both numerical simulation and experimental testing
  .
• Experience managing technical tasks or small teams is preferred.

• Good knowledge of CFD software (STAR‑CCM+, CFX, Fluent, PowerFLOW, etc.).
• Solid understanding of thermal management, HVAC systems, air distribution and human comfort assessment
  .
• Familiarity with fluid‑structure interaction and aero‑thermal coupling is a plus.
• Ability to lead transversal R&D actions and methodology development.

• Strong communication skills and proactivity.
• Team-oriented mindset in a multidisciplinary environment.
• Strategic thinking and problem‑solving abilities.

• English: Advanced (mandatory)
• Italian:
  Advanced conversational/reading (preferred)