Thermal Mechanical Engineer

Optunity is looking for an exceptional Thermal Engineer to join our engineering team. Join us in designing next-generation thermal solutions for cutting-edge electronic systems. At Optunity, we combine engineering excellence with creative problem-solving to develop thermal management technologies for some of the most challenging applications in the industry. If you're passionate about heat transfer, thermal simulations, and innovation, we want to meet you.

What you'll be doing:

• Designing and developing advanced thermal solutions (air and liquid cooling) for high-power electronic systems.
• Performing detailed thermal simulations (steady state & transient) and optimizing thermal layouts.
• Supporting design reviews and building proof-of-concept prototypes for new technologies.
• Collaborating closely with mechanical, electrical, and system engineers across the development cycle.
• Conducting hands-on experiments and thermal testing using advanced lab equipment.

What we’re looking for:

• B.Sc. or M.Sc. in Mechanical Engineering, with a strong academic record.
• Solid understanding of thermodynamics, heat transfer (conduction, convection, radiation), and fluid mechanics.
• Familiarity with mechanical CAD tools (SolidWorks, Creo, etc.) and DfM principles.
• Strong analytical skills and the ability to clearly communicate complex thermal concepts in English.

Bonus points for:

• Experience designing liquid cooling solutions, such as cold plates or pumped loops.
• Experience with thermal simulation tools such as Ansys Icepak, FloTHERM, Celsius EC, COMSOL, or equivalent.
• Understanding of CFD/FEA theory and design optimization techniques (e.g. DOE).
• Knowledge of manufacturing methods and materials relevant to heat exchangers and heat sinks.

Why Optunity?

• Join a highly skilled and passionate engineering team.
• Work on impactful projects in an environment that values innovation, precision, and excellence.
• Enjoy a flexible and supportive culture where your expertise is recognized and your ideas shape real products.