Principal Engineer

This job is with Jabil, an inclusive employer and a member of myGwork – the largest global platform for the LGBTQ+ business community. Please do not contact the recruiter directly. 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. How will you make an impact? We are seeking a highly skilled, technically authoritative and customer-facing Sr. Principal Hyperscale Rack Engineer within the Intelligent Infrastructure Segment to lead the architecture, integration, and strategic direction of advanced air and liquid-cooled server and network rack solutions for large-scale hyperscale deployments. This role will serve as the senior technical authority responsible for translating customer requirements into scalable, manufacturable, and commercially viable rack systems. As the Sr. Principal Hyperscale Rack Engineer , you will operate at the intersection of engineering, customer engagement, and program execution - driving end-to-end rack architecture across mechanical, power, thermal, electrical, and software domains. Success in this role requires deep technical expertise, strong commercial acumen, and the ability to lead complex programs while influencing both internal and external stakeholders. What will you do? Serve as the lead architect and development manager for complex rack-level solutions, owning system-level design decisions across mechanical, electrical, power, thermal, networking, and software integration domains. Lead customer-facing technical engagements from RFI/RFQ all the way to first hardware delivery, including design reviews, trade-off discussions, and executive-level conversations. Translate ambiguous or evolving customer requirements into clear program frameworks, ensuring alignment between customer expectations and engineering execution. Demonstrate strong commercial awareness by effectively managing customer expectations, pushing back when requirements introduce risk or inefficiency, and confidently addressing challenging technical and cost-related questions. Drive cross-functional alignment across all departments (executives, engineering, supply chain, manufacturing, and program) to ensure cohesive solution development with emphasis on Bill of Materials (BOM) management and scheduling. Own rack-level architecture including power distribution design, thermal strategies (air and liquid cooling), cable routing, serviceability, and manufacturability. Provide deep technical guidance on rack infrastructure including PDUs, busbars, liquid cooling systems (CDUs, manifolds, QDs), airflow design, and high-density compute integration. Oversee architecture decisions impacting performance, cost, scalability, and deployment efficiency. Drive program execution from concept through production, ensuring schedules are clearly defined, tracked, and met. Apply strong program management discipline: define milestones, identify risks early, escalate issues proactively, and hold cross-functional teams accountable to commitments. Drive readiness support calls internally from initial NPI scoping to prototyping to mass production, ensuring all systems are operable together from a power, thermal, and software standpoint. Partner with customers and internal stakeholders to continuously refine designs based on deployment feedback and operational learnings. Collaborate with compliance and certification teams to ensure mechanical designs meet global regulatory requirements (e.g., UL, CE, ISTA, ASTM). Mentor and guide engineers across disciplines, establishing best practices in rack system architecture and integration. Understanding ofrack installation constraints, maintenance access, and serviceability in rack mechanical infrastructure. Conduct root cause analysis and corrective actions for mechanical failures or field issues. May perform other duties and responsibilities as assigned. How will you get here? Education: Bachelor's degree in Mechanical Engineering, Electrical Engineering, Systems Engineering, or related field is required Experience: Minimum of 10 years' experience in engineering, systems integration, or data center hardware design. Minimum of 3 years' rack-level (L11) solution design and integration experience. Minimum of 3 years' switch/server (L10) experience, including compute, storage, or networking hardware integration. Proven ability to drive the development and execution of complex rack solutions for hyperscale or large-scale data center environments, managing 12-18 month lifecycles and portfolios valued at hundreds of millions of dollars. Familiarity with industry standards (EIA, ORV3, OCP) and global power architectures. Demonstrated experience working directly with customers in technical and commercially sensitive environments. Strong background in program execution, including schedule ownership, risk management, and cross-functional leadership. Excellent communication and cross-functional collaboration skills - a must. Strong understanding of mechanical systems, integration strategies, and program management. Hands-on experience with prototype fabrication and testing (mechanical S&V, software burn-in and test validation). Knowledge, Skills, Abilities: Excellent interpersonal and communication skills. Capable of assessing projects, articulating risks, and developing project milestones. Creative, self-motivated, accountable, and team-oriented. Able to work independently with minimal oversight. Skilled in writing reports, business correspondence, and procedural guides. Effective at presenting information and responding to management, clients, and public queries. Capable of influencing others and sharing best practices. Familiar with stage-gate processes in project lifecycle management (PLM). Able to coach and mentor less experienced engineers. Demonstrated success leading in a highly matrixed environment, driving alignment and execution across cross-functional teams without direct reporting authority. Ability to travel both domestically and internationally up to 30%. Preferred Qualifications: Master's Degree in Mechanical Engineering, Electrical Engineering, Systems Engineering, or related field is preferred. Extensive experience with liquid-cooled rack deployments in hyperscale or AI/ML infrastructure environments. Proficiency in CAD tools (e.g., SolidWorks, Creo/Pro-E, Inventor) and FEA software (e.g., ANSYS, Abaqus). Experience working with global suppliers and contract manufacturers (CM) a plus. High level knowledge offluid dynamics, pressure drop calculations, and pipe sizing for glycol-based systems. Proven experience driving compliance and validation for rack configurations, including regulatory standards, safety requirements, and mechanical integrity (shock, vibration, and transit durability). About Jabil's Intelligent Infrastructure Group: Headquartered in Austin, TX , with a flagship facility located near The Domain and the Austin FC stadium Growing rapidly , with a team of more than 100 employees and significant expansion planned through 2026 Generated over $12 billion in FY25 revenue , driven largely by partnerships with major hyperscale customers Delivers cutting‑edge engineering, supply chain, and manufacturing solutions that power the world's AI infrastructure and global data center ecosystems What Can Jabil Offer You? Along with growth, stability, and the opportunity to be challenged, Jabil offers a competitive benefits package that includes: Medical, Dental, Prescription Drug, and Vision Insurance with HRA and HSA options 401K Match Employee Stock Purchase Plan Paid Time Off Tuition Reimbursement Life, AD&D, and Disability Insurance Commuter Benefits Employee Assistance Program Pet Insurance Adoption Assistance Annual Merit Increases Community Volunteer Opportunities The pay range for this role is $156,400 - $281,500. Job-related, non-discriminatory factors used to determine the actual offered rate include qualifications and experience, geographic location, education, external market data, and consideration of internal equity. The anticipated close date of this job requisition is: September 13, 2026. As part of the total rewards package, this position is eligible for a short-term incentive based on performance. In addition, Jabil offers benefits to enhance your health, wealth, and resilient self. These include medical, dental, and vision insurance plans; paid time off accruing at a rate of 3.07 hours during your first year of employment; 4 weeks of paid parental leave; in 2027, 11 company-paid holidays (9 fixed holidays and 2 optional floating holidays), subject to change yearly; 401(k) retirement plan; and employee stock purchase plan. 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. 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