Developer Thermal Design-1

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About this opportunity
Ericsson is opening a state-of-the-art R&D center in Yokohama to deliver Japan-driven radio products that shape networks worldwide. We are looking for a Senior Thermal Designer to join one of the best Thermal Design teams in the world, developing cutting-edge radio products for 5G and future 6G networks.
In this role, you will deliver competitive thermal solutions under high-volume production and short time-to-market constraints, directly impacting product size, weight, and lifetime. You will collaborate closely with a global community of 30+ talented designers across Sweden, China, and Canada, as well as local vendors and cross-functional engineering teams. If you are eager to learn, grow, and collaborate across disciplines, are you in?
You will

• Collaborate and work with other thermal designers globally, contributing to a creative and supportive team culture
• Conduct Computational Fluid Dynamics (CFD) simulations to support creative development of complex electronic assemblies using state-of-the-art tools
• Validate simulation results through lab testing and prototype evaluations to ensure thermal performance
• Generate clear technical reports, summarizing simulation outcomes, test results, and recommendations, and present numerical and experimental findings to stakeholders across R&D, system, and product management.
• Support troubleshooting and customer cases when thermal issues arise, participating in task forces, RCAs, and design improvements
• Work closely with system, RF, PA, mechanics, materials, power, production, and other functions to secure end-to-end optimized thermal solutions for Ericsson radio products
• Help drive continuous improvement in tools, methods, and processes for thermal simulation and verification, leveraging global best practices and common processes
• Take responsibility for your own development, actively sharing lessons learned and contributing to the global thermal roadmap and technology evolution

You will bring

• M.Sc. or Ph.D. in fluid dynamics, thermal engineering, aerospace, or a closely related field
• 5-10 years of experience in simulations & measurements
• Good scripting skills (e.g. C, MATLAB, Python) to automate workflows, post-processing, and data analysis; experience with AI/ML libraries is a plus
• Good understanding of heat and mass transfer and fluid dynamics principles, and how they apply to electronic cooling from component to product level
• Strong skills in building CFD models with appropriate simplifications that still represent reality, using tools such as FloTherm, Celsius EC, Fluent or equivalent
• General knowledge and interest in the ICT industry is a plus
• Enjoyment of working in cross-functional, international and multi-site teams
• Curiosity and an internal drive to take on new challenges
• Confidence to take fact-based, timely, and courageous decisions without letting prestige get in the way
• Enjoyment of knowledge sharing and contributing to a strong global thermal community, aligning technology strategies and solutions across different sites
• Ability to communicate in spoken and written English; Japanese language skills are an advantage

Why join Ericsson?At Ericsson, you'll have an outstanding opportunity. The chance to use your skills and imagination to push the boundaries of what's possible. To build solutions never seen before to some of the world's toughest problems. You'll be challenged, but you won't be alone. You'll be joining a team of diverse innovators, all driven to go beyond the status quo to craft what comes next.
What happens once you apply? Click Here to find all you need to know about what our typical hiring process looks like.Encouraging a diverse and inclusive organization is core to our values at Ericsson, that's why we champion it in everything we do. We truly believe that by collaborating with people with different experiences we drive innovation, which is essential for our future growth. We encourage people from all backgrounds to apply and realize their full potential as part of our Ericsson team. Ericsson is proud to be an Equal Opportunity Employer. learn more.
Primary country and city: Japan (JP) || Yokohama
Req ID: 785996