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Principal Thermal Design Engineer

Nokia

Nokia

Design
United States
Posted on Dec 4, 2025

As a Principal Thermal Design Engineer at Nokia, you will play a crucial role in advancing our optoelectronic component designs by developing innovative thermal solutions. You’ll collaborate closely with cross-functional teams across various locations, contributing your expertise to tackle complex challenges and enhance product performance. Our fast-paced and dynamic work environment fosters creativity and encourages you to prototype and validate solutions through experimentation. You will have ample opportunities to interact with vendors and drive specifications, ensuring seamless integration of thermal solutions into our products. Your analytical skills and detail-oriented mindset will be key as you perform FEA analyses and create production-level designs, all while contributing to the development of new platforms that meet cost and efficiency goals.

Come create the technology that helps the world act together.

We are a B2B technology innovation leader pioneering the future where networks meet cloud.

At Nokia you will have a positive impact on people’s lives and help build the capabilities needed for a more productive, sustainable, and accessible world.

Be part of a culture built on an inclusive way of working where we are open to your ideas, you are empowered to take risks and are encouraged to be fearless in bringing your authentic self to work.

What we offer

Nokia offers flexible and hybrid working schemes, continuous learning opportunities, well-being programs to support you mentally and physically, opportunities to join and get supported by employee resource groups, mentoring programs and highly diverse teams with an inclusive culture where people thrive and are empowered.

Nokia is committed to inclusion and is an equal opportunity employer

Nokia has received the following recognitions for its commitment to inclusion & equality:

  • One of the World’s Most Ethical Companies by Ethisphere
  • Gender-Equality Index by Bloomberg
  • Workplace Pride Global Benchmark

At Nokia, we act inclusively and respect the uniqueness of people.

Nokia’s employment decisions are made regardless of race, color, national or ethnic origin, religion, gender, sexual orientation, gender identity or expression, age, marital status, disability, protected veteran status or other characteristics protected by law.

We are committed to a culture of inclusion built upon our core value of respect.

Join us and be part of a company where you will feel included and empowered to succeed.


As a Principal Thermal Design Engineer at Nokia, your core mission is to innovate and implement cutting-edge thermal solutions that enhance the performance and reliability of our advanced optoelectronic systems. By leveraging your expertise in thermal management and collaborating across multiple engineering teams, you will directly support Nokia's broader mission of delivering state-of-the-art connectivity solutions. You will play a crucial role in optimizing product designs, ensuring they meet rigorous industry standards, and ultimately contributing to our commitment to driving technological advancements for a more connected world.

You have:

  • PhD (required) in Mechanical Engineering with more than 5 years of experience
  • Expertise in FEA and CFD, with proficiency in ANSYS and FloTherm
  • Solid experience with Pro/Engineer, Creo, SolidWorks, or AutoCAD
  • Strong written and verbal communication skills
  • Experience with FMEA
  • Experience with DOE
  • Experience with optical system components and data center rack-based products
  • Knowledge of optoelectronic components and assembly and industry qualification specifications

It would be nice if you also had:

  • Familiarity with SQL databases and Agile product data management SW
  • Experience in conducting experiments to validate modeling


  • Design and implement innovative thermal cooling solutions for advanced optoelectronic components with a focus on data center interconnect products utilizing combinations of conduction, convection, and/or phase change-based heat transfer.
  • Conduct thermal, thermo-mechanical, and mechanical FEA analyses to model and validate designs.
  • Perform thermal Computation Fluid Dynamic (CFD) analyses
  • Lead experimental validation of thermal solutions to ensure performance meets specifications.
  • Collaborate with cross-functional teams to develop assembly procedures and optimize product designs.
  • Conduct Failure Mode and Effects Analysis (FMEA) on proposed thermal designs to mitigate risks.
  • Create detailed production-level CAD models and drawings for manufacturing readiness.
  • Work closely with vendors to finalize specifications and manage procurement of thermal materials and components.
  • Engage with customers and suppliers
  • Engage with manufacturing and operations to ensure new platforms meet cost, yield, and cycle time targets.