Principal Thermal Design Engineer

At Jabil (NYSE: JBL), we are proud to be a trusted partner for the world's top brands, offering comprehensive engineering, supply chain, and manufacturing solutions. With 60 years of experience across industries and a vast network of over 100 sites worldwide, Jabil combines global reach with local expertise to deliver both scalable and customized solutions. Our commitment extends beyond business success as we strive to build sustainable processes that minimize environmental impact and foster vibrant and diverse communities around the globe.JOB SUMMARYThe Thermal Engineer is responsible for leading thermal architecture, analysis, and validation activities across complex hardware platforms. This role drives cooling strategy, owns thermal risk management, and ensures products achieve performance and reliability targets through disciplined simulation, testing, and cross-functional problem solving.ESSENTIAL DUTIES AND RESPONSIBILITIESLead thermal design strategy for platform cooling systems, including airflow architecture, heatsink solutions, fan strategy, and thermal control considerations.Own advanced thermal simulation and analysis activities to validate design direction and system layout performance.Define thermal validation scope, plans, schedules, and acceptance criteria aligned to product and customer requirements.Drive root cause analysis and corrective actions for thermal issues found during design, validation, builds, or field feedback loops.Identify thermal risks early, develop mitigation and contingency plans, and communicate trigger conditions and closure plans to stakeholders.Partner with Mechanical, Electrical, Firmware, Systems, and Validation teams to ensure cross-functional decisions support reliable thermal performance.Publish clear thermal performance reports, gap assessments, and status updates that enable timely program decisions.Mentor junior engineers and contribute to thermal methodology, standards, and best practice development.JOB QUALIFICATIONSEducation & ExperienceBachelor’s degree in Mechanical Engineering, Thermal Engineering, or related technical field; Master’s degree preferred.5–10 years of relevant experience in thermal design, cooling architecture, analysis, and validation of complex hardware systems.Knowledge, Skills, and AbilitiesStrong expertise in CFD or equivalent thermal modeling techniques and interpretation of system-level thermal behavior.Experience defining and executing thermal validation plans and driving technical issue closure across product programs.Familiarity with server, storage, networking, AI infrastructure, or other high-power electronics products is required.Strong analytical skills and ability to communicate technical risk, data, and recommendations clearly.Demonstrated ability to lead technical efforts across matrixed, cross-functional engineering teams.BE AWARE OF FRAUD: When applying for a job at Jabil you will be contacted via correspondence through our official job portal with a jabil.com e-mail address; direct phone call from a member of the Jabil team; or direct e-mail with a jabil.com e-mail address. Jabil does not request payments for interviews or at any other point during the hiring process. Jabil will not ask for your personal identifying information such as a social security number, birth certificate, financial institution, driver’s license number or passport information over the phone or via e-mail. If you believe you are a victim of identity theft, contact the Federal Bureau of Investigations internet crime hotline ( the Federal Trade Commission identity theft hotline ( and/or your local police department. Any scam job listings should be reported to whatever website it was posted in.Jabil, including its subsidiaries, is an equal opportunity employer and considers qualified applicants for employment without regard to race, color, religion, national origin, sex, sexual orientation, gender identity, age, disability, genetic information, veteran status, or any other characteristic protected by law.Accessibility Accommodation If you are a qualified individual with a disability, you have the right to request a reasonable accommodation if you are unable or limited in your ability to use or access Jabil.com/Careers site as a result of your disability. You can request a reasonable accommodation by sending an e-mail to View email address on click.appcast.io or calling View phone number on click.appcast.io with the nature of your request and contact information. Please do not direct any other general employment related questions to this e-mail or phone number. Please note that only those inquiries concerning a request for reasonable accommodation will be responded to.#whereyoubelong#AWorldofPossibilitiesSummaryLocation: Austin, TXType: Full timePosted: 2026-10-15Country: United States of AmericaRequisition: J2468525Posting ID: b8bcff42f0021001cd0e62ac06dc0000