Senior Thermal Design Engineer

CoolStar Innovation Technology Limited; Hong Kong; On-site; HKD 450,000 - 650,000; Full time

Benefits offered by this job

Restaurant d'entreprise

Job summary

CoolStar Innovation Technology Limited is seeking a seasoned Thermal Engineer to lead end-to-end cooling design across cold chain, NEV, or IDC sectors. You will own thermal hardware and simulation models, drive cross-functional optimization, and steer projects from concept through mass production.

The role requires strong CFD/CAD skills, hands-on prototyping, and a track record of delivering robust thermal solutions in demanding environments.

Qualifications

• Bachelor's degree or above in Thermal Engineering, Refrigeration Engineering, Mechanical Engineering, or a related discipline.
• 3+ years R&D experience in cooling system design, thermal simulation, or related fields.
• Proficient in thermal simulation tools and CAD such as SolidWorks or CREO.

Responsibilities

• Lead end-to-end thermal design for target segments, including system architecture and heat dissipation.
• Own cooling design for IDC/NEV or cold chain, from concept to mass production handoff.
• Develop and validate CFD/thermal models; iterate with prototyping and testing.
• Design and execute performance and reliability test programs with reports.
• Manage thermal project deliverables and coordinate with R&D for mass production.

Skills

Thermal design

CFD simulation

Cross-functional communication

Project management

Prototyping

Education

Bachelor's degree in Thermal/Mechanical Engineering or related

Tools

Flotherm

FloEFD

Icepak

6SigmaET

ANSYS Fluent

COMSOL

SolidWorks

CREO

Job description

• Lead end-to-end thermal design and development for target application segments (cold chain, NEV, or IDC), including system architecture definition, heat dissipation solution design, and full-cycle delivery from concept through mass production.
• Own GPU/CPU cold plate and manifold design for IDC applications, or battery/motor/power electronics thermal management for NEV, or refrigeration system structural design for cold chain — covering design, simulation, optimization, and validation.
• Drive research and optimization in solid-liquid heat transfer, flow resistance reduction, and thermal fluid selection; build and iterate CFD simulation models; guide cross-functional teams on structural optimization and validate results through prototyping and testing.
• Develop dynamic thermal simulation models for transient solid-fluid coupled heat transfer; continuously improve models based on experimental data.
• Lead hybrid air-liquid cooling solution design where applicable; balance thermal performance, energy consumption, and cost for target application environments.
• Design and execute performance and reliability test programs (including accelerated aging, leak detection, and thermal cycling); produce test reports; resolve thermal design issues identified during validation.

Manage thermal design project deliverables; drive products from R&D through qualification and mass production handoff.

Requirements:

• Bachelor's degree or above in Thermal Engineering, Refrigeration Engineering, Mechanical Engineering, Fluid Mechanics, Heat Transfer, Engineering Thermophysics, or a related discipline.
• 3+ years of in-depth R&D experience in at least one of: cooling system design and testing, thermal simulation, heat dissipation structure design, or thermal testing and optimization; domain experience in cold chain, NEV, or IDC is preferred for the respective roles.
• Proficient in at least one mainstream thermal simulation tool (Flotherm, FloEFD, Icepak, 6SigmaET, ANSYS Fluent, or COMSOL) and one CAD tool (SolidWorks or CREO); capable of independently designing experimental programs.
• Familiar with thermal fluid media, insulation materials, sealing technologies, and piping design standards; knowledge of relevant industry standards and compliance requirements.
• Familiar with cold plate or heat exchanger manufacturing processes and cost drivers.
• Proven ability to independently define test plans, analyze data, and drive design improvements.
• Strong cross-functional communication, project management, and problem-solving skills; innovative mindset and rigorous work ethic.

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