Mechanical Engineer (Thermal Systems)

MECHANICAL ENGINEER (THERMAL SYSTEMS) Stadler offers a wide range of international career opportunities. Here you get the chance to expand your potential, take on meaningful responsibilities, and deliver outstanding performance within dedicated teams. We are looking for motivated individuals who want to shape the mobility of tomorrow with us.

Are you ready to achieve great things with us? As a Mechanical Engineer (Thermal Systems), you will lead the development, integration, validation, and continuous improvement of thermal management systems for railway vehicles. Serve as both the thermal engineering subject matter expert and thermal system owner, ensuring thermal performance, passenger comfort, equipment cooling, regulatory compliance, reliability, maintainability, and customer requirements are achieved throughout the project lifecycle.

Key Responsibilities

Develop concepts, specifications, and technical documentation for rail vehicle thermal management systems. Own and manage thermal system requirements throughout the project lifecycle. Perform and review thermal load calculations, energy balance assessments, passenger comfort analyses, and equipment cooling evaluations.

Define thermal management strategies for HVAC systems, batteries (BTMS), power electronics (Traction Converter/ Battery Converter), and other onboard systems. Responsible for the design, integration, and validation of thermal systems within rail vehicles. Act as the primary technical liaison between Stadler and thermal/HVAC suppliers.

Review and approve supplier designs, calculations, technical documentation, and test reports. Interpret and incorporate customer, regulatory, operational, and environmental requirements into system designs. Define procurement documentation, technical specifications, verification plans, type testing requirements, and commissioning documentation.

Coordinate thermal system interfaces with mechanical, electrical, software, carbody, and vehicle engineering teams. Support climatic chamber testing, static testing, dynamic testing, and vehicle commissioning activities. Investigate and resolve thermal performance issues through engineering analysis and root-cause investigations.

Responsible for supporting First Article Inspections (FAI) and production implementation activities. Ensure project deliverables are completed in accordance with project schedules, budgets, and quality requirements. Support development of thermal engineering standards, tools, processes, and best practices within Stadler.

Ensure clear and effective cross-departmental collaboration.

Minimum Qualifications

Bachelor’s degree in mechanical engineering or related engineering discipline. 5+ years of experience in thermal engineering, thermal management, HVAC systems, cooling systems, heat transfer, thermodynamics, or related fields. Experience in rail, aerospace, automotive, defense, heavy equipment, industrial equipment, or transportation industries.

Strong understanding of: Thermodynamics Heat Transfer Fluid Mechanics HVAC and Refrigeration Systems Thermal Management and Equipment Cooling Environmental Testing and Validation Experience performing engineering calculations, thermal load analyses, system evaluations, and technical investigations. Independent and well-structured working methods for integrating multiple projects, conducting testing, and preparing deliverables associated with thermal systems.

Excellent communication, technical writing, and problem-solving skills. Ability to work effectively in a fast-paced, collaborative environment. Self-motivated attitude and ability to use initiative to meet project timelines. Must be fluent in English (both verbal and written). German is a plus!

Preferred Qualifications

Experience with passenger rail, locomotives, light rail vehicles, or metro vehicles. Experience with thermal modeling and simulation tools such as ANSYS, Icepak, Star-CCM+, FloTHERM, Simcenter, or similar. Familiarity with systems engineering principles, requirements management, and technical interface management.

What we offer

Competitive Pay (annual bonus potential) Low-cost, comprehensive Medical / Dental / Vision / Rx plans 401(k) with generous employer match after 90 days Generous Paid Time Off / 9 Paid Holidays / Extended Paid Holiday Paid training/career development Tuition and training reimbursement Paid maternity and parental leave Company-paid life and disability insurance Referral bonus program