Computational Fluid Dynamics Engineer

7 days ago

Petah Tikva Center District, Israel Optunity. LTD Full time ₪104,000 - ₪130,878 per year

Optunity is hiring: Thermal 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.
  • 2+ years of experience
     in thermal design of electronic products or thermal systems.
  • Solid understanding of thermodynamics, heat transfer (conduction, convection, radiation), and fluid mechanics.
  • Experience with thermal simulation tools such as Ansys Icepak, FloTHERM, Celsius EC, COMSOL, or equivalent.
  • 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.
  • Understanding of CFD/FEA theory and design optimization techniques (e.g. DOE).
  • Familiarity with mechanical CAD tools (SolidWorks, Creo, etc.) and DfM principles.
  • 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.

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