Note: The job is a remote job and is open to candidates in USA. Jabil is a global provider of engineering, supply chain, and manufacturing solutions for leading brands. The Principal Mechanical Design Engineer will lead the architecture, integration, validation, and production release of mechanical systems for hyperscale data centers, with a focus on liquid cooling and rack-level infrastructure. The role also provides technical leadership across design, validation, manufacturing, vendors, and cross-functional engineering teams.

Responsibilities

• Lead the end-to-end mechanical design and engineering of hyperscale Data Center Infrastructure (DCI) systems, including liquid-cooled rack assemblies, CDUs, manifolds, enclosures, structural frames, and associated hydronic piping systems
• Serve as the technical authority for single-phase and two-phase liquid cooling architectures, including primary and secondary loop design, in-rack distribution, and system integration within hyperscale data center environments
• Define and validate operational performance requirements for liquid-cooled infrastructure, including pressure ratings, hydrostatic limits, temperature ranges, flow rates and uniformity, thermal expansion, durability, and serviceability
• Design, analyze, and validate machined components, welded fabrications, manifolds, and structural systems using advanced engineering principles, including stress analysis, finite element analysis (FEA), flow modeling, and structural load calculations to ensure mechanical integrity and code compliance
• Lead wetted material selection and compatibility analysis for liquid cooling systems, including corrosion mitigation strategies, surface treatments, cleanliness standards, and long-term durability considerations
• Develop and review CAD models and complete technical data packages using CREO, SolidWorks, or equivalent tools; ensure design accuracy, manufacturability, and system-level integration
• Author and approve technical specifications for piping systems, rack-level cooling infrastructure, and hydronic components, including installation guidelines, maintenance procedures, testing requirements, and compliance with applicable standards (ASME, ISO)
• Establish and oversee validation protocols including hydrostatic pressure testing, leak detection and mitigation, flow resistance analysis, and corrosion verification to ensure regulatory compliance and operational reliability
• Evaluate customer design proposals and technical specifications to assess feasibility, manufacturability, cost, and risk; provide recommendations to optimize performance and total cost of ownership
• Lead cross-functional design reviews with electrical, thermal, manufacturing, quality, and supply chain teams to ensure full system integration and compliance with product specifications and applicable plumbing and hydronic codes
• Optimize rack manifold design and manufacturing processes, including machining, welding, surface finishing, connection interfaces, venting and draining strategies, and flow path optimization to enhance performance and manufacturability
• Drive continuous improvement in manufacturing assembly methods and tooling in collaboration with production teams and equipment vendors to improve quality, scalability, and cost efficiency
• Lead root cause investigations for complex mechanical failures identified during validation or field deployment and implement corrective design improvements
• Provide technical leadership in vendor qualification and management for mechanical components and liquid cooling subsystems
• Identify and mitigate technical risks impacting performance, schedule, or cost, and contribute to R&D initiatives advancing liquid cooling technologies and system innovation
• Apply modular data center design principles to liquid cooling integration — standardized, repeatable mechanical packages that can be built, tested, and validated in a factory environment prior to shipment
• Design cooling systems for prefabricated and skid-mounted deployment, accounting for transport and vibration loads, shipping envelope constraints, and inter-module connection interfaces

Skills

• * Bachelor's degree in Mechanical Engineering, Systems Engineering, or a related engineering discipline from an accredited university
• * 8 years' experience in mechanical design and integration of mission-critical systems
• * Proven track record of successful system designs and implementations in a relevant industry
• * Strong understanding of mechanical systems, integration strategy, and system coordination
• * Familiarity with industry standards and regulations related to Energy Storage Systems and Data Center Infrastructure is preferred
• * Excellent problem-solving skills and attention to detail
• * Strong communication and teamwork abilities
• * Master's Degree in Mechanical Engineering
• * Professional Engineer (PE) License
• * Hands-on experience designing liquid cooling systems for modular/prefabricated data center deployments, including factory acceptance testing (FAT) and site integration

Benefits

• Short-term incentive based on performance
• 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
• Employee stock purchase plan

Company Overview

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