Product Engineer 3

Job#: 3055407 Job Description: Location: Fremont, CA (Hybrid)

Duties: Position Summary We are seeking a highly motivated Thermal Engineer to lead the characterization and modeling of a thermal control assembly consisting of embedded heaters and a liquid-cooled plate. The primary objective is to develop a physics-based and experimentally validated transfer function that predicts thermal performance when transitioning between two specified coolant formulations.

The successful candidate will design and execute experiments, develop analytical and computational models, correlate model predictions to measured results, and establish methodologies for predicting temperature uniformity, thermal transients, and steady-state thermal behavior across varying operating conditions.

This role requires strong expertise in heat transfer, thermal management, instrumentation, data analysis, and engineering problem-solving. The position involves both hands-on laboratory work and advanced modeling activities.

Key Responsibilities

• Characterize thermal performance including:

• Mean operating temperature

• Temperature uniformity

• Spatial thermal gradients

• Thermal transition and settling behavior

• Design experiments to isolate and quantify key thermal parameters and mechanisms.

• Specify and implement thermal instrumentation including thermocouples, RTDs, flow sensors, pressure sensors, and infrared cameras.

• Evaluate the impact of coolant properties, flow conditions, thermal interfaces, and hardware tolerances on system performance.

• Develop analytical and computational thermal models of multi-component assemblies.

• Develop and validate transfer functions to predict thermal performance differences between two specific coolants.

• Correlate experimental data with simulation results and improve model accuracy.

• Develop automated analysis tools and data processing workflows using Python or MATLAB.

• Generate technical reports and present conclusions to engineering and management teams.

Required Qualifications

• M.S. or Ph.D. in Mechanical Engineering, Aerospace Engineering, Chemical Engineering, Applied Physics, or related discipline.
• 5+ years of experience in thermal engineering, heat transfer, or thermal management systems.
• Strong expertise in thermal management, heat transfer, and precision thermal systems.
• Experience developing and validating thermal models using experimental data.
• Hands-on experience with hardware instrumentation, thermal testing, and laboratory experimentation.
• Proficiency with Python and/or MATLAB for data analysis and model development.
• Strong problem-solving and analytical skills.
• Excellent written and verbal technical communication skills.

Skills: Desired Qualifications Thermal Engineering and Modeling Expertise

• Expert knowledge of fluid dynamics, rheology, and heat transfer principles, including the impact of fluid properties on cooling performance and thermal uniformity.
• Strong experience developing hybrid physics-based and data-driven analytical models for dynamic systems, including system identification, state estimation, model calibration, and closed-loop control.
• Experience modeling heat transfer in complex assemblies containing metals, ceramics, polymers, thermal interface materials, and electronic components
• Familiarity with thermal interface materials, thermal contact resistance, and cooling plate design.
• Ability to develop reduced-order models and transfer functions from analytical and experimental data, and compare with ideal FEA results.
• Experience with parameter estimation, regression techniques, and model calibration.

Experimental And Measurement Skills

• Experience with precision temperature control systems and thermal uniformity optimization.
• Experience with infrared thermography, thermocouples, RTDs, and other thermal measurement techniques.
• Experience working with hardware test stands, data acquisition systems, and instrumentation.
• Familiarity with heat transfer and thermal management in printed circuit board assemblies.

Software and Data Analysis

• Advanced proficiency in Python and/or MATLAB.
• Experience with statistical analysis and uncertainty quantification.
• Experience automating test execution and data analysis.

Personal Attributes

• Strong analytical thinking and scientific rigor.
• Ability to independently define experiments and solve complex multidisciplinary problems.
• Hands-on, self-driven approach with willingness to work in laboratory environments.
• Strong collaboration skills and ability to communicate complex technical concepts clearly.

Education: **** Preferred Education

• Ph.D. strongly preferred in Mechanical Engineering, Applied Physics, Thermal Sciences, or a related field.
• Demonstrated record of solving complex multidisciplinary thermal problems through a combination of first-principles analysis and experimental validation.

What Success Looks Like Within the project, the engineer will successfully:

• Characterize baseline thermal performance using the reference coolant.
• Develop validated thermal models of the assembly.
• Quantify the sensitivity of performance to coolant properties and operating conditions.
• Create a validated transfer function between the two target coolants.
• Demonstrate prediction accuracy against experimental results for key metrics including mean temperature, uniformity, and transient response.

Everforth Apex is a world-class IT services company that serves thousands of clients across the globe. When you join Everforth Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including ClearlyRateds Best of Staffing® in Talent Satisfaction in the United States and Great Place to Work® in the United Kingdom and Mexico. Everforth Apex uses a virtual recruiter as part of the application process. Click here for more details. By applying for this job, you agree to receive calls, AI-generated calls, text messages, or emails from Everforth Apex and its affiliates, and contracted partners. Frequency varies for text messages. Message and data rates may apply. Carriers are not liable for delayed or undelivered messages. You can reply STOP to cancel and HELP for help. You can access our privacy policy at https://www.apexsystems.com/privacy-policy Everforth Apex Benefits Overview: Everforth Apex offers a range of supplemental benefits, including medical, dental, vision, life, disability, and other insurance plans that offer an optional layer of financial protection. We offer an ESPP (employee stock purchase program) and a 401K program which allows you to contribute typically within 30 days of starting, with a company match after 12 months of tenure. Everforth Apex also offers a HSA (Health Savings Account on the HDHP plan), a SupportLinc Employee Assistance Program (EAP) with up to 8 free counseling sessions, a corporate discount savings program and other discounts. In terms of professional development, Everforth Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6+ months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Everforth Apex has a dedicated customer service team for our Consultants that can address questions around benefits and other resources, as well as a certified Career Coach. You can access a full list of our benefits, programs, support teams and resources within our ‘Welcome Packet’ as well, which an Everforth Apex team member can provide. Everforth Apex Systems is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. Everforth Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law. If you require an accommodation under the Americans with Disabilities Act to participate in an interview with a virtual recruiter or to use our website for a search or application, please contact our Benefits Department at [email protected] or 804-523-8228. Please note that this contact information is strictly to be used for medical ADA accommodations and that no other inquiries will be answered. UnitedHealthcare creates and publishes the Transparency in Coverage Machine-Readable Files on behalf of Everforth Apex Systems. © 2026 Everforth, Inc. All rights reserved.

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Everforth Apex is an equal opportunity employer. We do not discriminate or allow discrimination on the basis of race, color, religion, creed, sex (including pregnancy, childbirth, breastfeeding, or related medical conditions), age, sexual orientation, gender identity, national origin, ancestry, citizenship, genetic information, registered domestic partner status, marital status, disability, status as a crime victim, protected veteran status, political affiliation, union membership, or any other characteristic protected by law. Everforth Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law. If you have visited our website in search of information on employment opportunities or to apply for a position, and you require an accommodation in using our website for a search or application, please contact our Benefits Department at [email protected] or 804-523-8228. (Do not submit resumes or solicit consultants to this email address). UnitedHealthcare creates and publishes the Transparency in Coverage Machine-Readable Files on behalf of Everforth Apex.