Senior EV Thermal & Mechanical Engineer

Flux Mobility; Winterthur; On-site; CHF 90,000 - 135,000; Full time

Job summary

Flux Mobility in Winterthur is seeking an experienced Thermal Systems & Mechanical Engineer to own the thermal architecture of our electric light commercial vehicles and the accompanying mechanical design.

You will size and integrate cooling and heating systems, lead verification activities, and collaborate with mechanical, electrical, and software teams to ensure optimal performance across diverse operating conditions.

Qualifications

• Degree in mechanical engineering, automotive engineering, mechatronics, process/energy engineering or a comparable discipline.
• At least 5 years of industry experience in thermal systems or thermal management, ideally in automotive or a comparably demanding industry.
• Practical experience with vehicle thermal management topics such as battery cooling, HVAC/climate, refrigerant circuits or heat pump systems.
• Experience with thermal and 1D system simulation tools (e.g. GT-SUITE, KULI, Simcenter Amesim or Simscape) and with correlating models to test data.
• Solid mechanical design skills and a good understanding of fluid systems e.g. pumps, valves, heat exchangers and coolant/refrigerant circuits.
• Experience working with suppliers and development partners.
• Ability to take technical ownership and systematically develop complex systems.
• Enjoy working across disciplines in a pragmatic, fast-moving team.

Responsibilities

• Take technical ownership of the vehicle's thermal architecture: battery thermal management, power electronics and e-motor cooling, cabin HVAC, and the associated coolant and refrigerant circuits.
• Size and design cooling and heating systems, including pumps, valves, radiators, chillers, heat exchangers, expansion tanks, lines and heat pump and refrigerant circuits.
• Carry out thermal sizing and simulation (1D system simulation and, where needed, CFD) and correlate models against component and vehicle test data.
• Design and integrate the mechanical hardware of the thermal system into the vehicle (packaging, mounting, routing and interfaces to the vehicle structure) together with the design team.
• Define the thermal requirements and thermal operating strategy together with the software team.
• Plan and lead thermal verification and validation: component tests, climatic-chamber testing and on-vehicle testing in hot and cold conditions, in collaboration with external partners.
• Work with suppliers of thermal components (compressors, pumps, heat exchangers, HVAC units) on selection, specification and validation.
• Support aftersales and the field team with thermal-related field issues and root-cause analysis.
• Analyze test and field data to continuously improve the thermal and mechanical design.

Skills

Thermal management

Mechanical design

Systems engineering

Cross-disciplinary teamwork

Education

Mechanical engineering, automotive engineering, mechatronics, or related field

Tools

GT-SUITE

KULI

Simcenter Amesim

Simscape

Job description

Flux Mobility in Winterthur is seeking an experienced Thermal Systems & Mechanical Engineer to own the thermal architecture of our electric light commercial vehicles and the accompanying mechanical design.

You will size and integrate cooling and heating systems, lead verification activities, and collaborate with mechanical, electrical, and software teams to ensure optimal performance across diverse operating conditions.