Jetcool
AI and high-performance computing
Sr.MechanicalDesignEngineer
Neural analysis suggests this role is
optimal for Senior candidates.
“Sr. Mechanical Design Engineer at Jetcool. Skills: Mechanical design, SolidWorks, GD&T, Tolerance analysis, Engineering drawings. Take end-to-end ownership of detailed mechanical design, from early concepts through fully released, production-ready SolidWorks models and documentation. Expertly detail SolidWorks parts and assemblies, converting conceptual designs into fully defined geometry with proper tolerances, fits, interfaces, and manufacturing intent”
Industry & Context.
resolve build issues; clarify documentation; continuously improve design robustness and producibility
What They're Looking For.
Must Have
8+ years of experience in detailed mechanical design with direct ownership of production-released hardware, Expert proficiency in SolidWorks, including advanced part modeling, assemblies, configurations, and drawing creation with manufacturing-ready detail, Demonstrated mastery of GD&T, tolerance analysis, and precision detailing, applied intentionally to real manufacturing and assembly constraints, Extensive experience creating clear, unambiguous engineering drawings for machined parts, sheet metal, weldments, and complex assemblies, working knowledge of ASME drawing standards and common manufacturing best practices, Proven experience detailing fabricated and welded structures, including weld definitions, callouts, and fabrication clarity, Deep understanding of manufacturing processes (machining, sheet metal, welding, precision assembly) and how SolidWorks design decisions affect cost, quality, and yield, Experience selecting and applying materials, seals, gaskets, and hardware in demanding mechanical systems, experience developing and maintaining structured BOMs, part numbering schemes, and controlled documentation sets, Demonstrated ownership mentality—taking responsibility for design quality, manufacturability, cost, and downstream success through production, Clear communicator who can effectively work with engineers, manufacturing teams, and suppliers to drive issues to closure
What You'll Do.
Take end-to-end ownership of detailed mechanical design
from early concepts through fully released
production-ready SolidWorks models and documentation
Expertly detail SolidWorks parts and assemblies
converting conceptual designs into fully defined geometry with proper tolerances
and manufacturing intent
Own tolerance stack-ups
and fit/function strategy
ensuring designs assemble reliably and perform as intended in production
Produce high-quality engineering drawings (machined parts
and assemblies) using ASME Y14 and applicable industry standards
with clarity suitable for external suppliers
Own weldment modeling and drawings in SolidWorks
including joint design
and distortion considerations
Select and specify materials
balancing performance
and supply-chain constraints
Build and maintain complete documentation packages
including SolidWorks models
with accountability for accuracy and completeness
Define and own BOM structure and product hierarchy
supporting manufacturing
configuration control
and lifecycle management
Lead design reviews with an ownership mindset
proactively identifying tolerance risk
manufacturability issues
Partner closely with manufacturing
and suppliers to resolve build issues
clarify documentation
and continuously improve design robustness and producibility
How You'll Work.
Team & Collaboration
Partner closely with manufacturing, quality, and suppliers to resolve build issues, clarify documentation, and continuously improve design robustness and producibility; Clear communicator who can effectively work with engineers, manufacturing teams, and suppliers to drive issues to closure
Communication Scope
Clear communicator who can effectively work with engineers, manufacturing teams, and suppliers to drive issues to closure
Full Job Description
Job Posting Start Date 05-06-2026 Job Posting End Date At JetCool, a Flex company, we’re at the forefront of liquid cooling innovation, delivering advanced solutions that empower our partners in AI and high-performance computing. United by a shared purpose, our teams are pushing the limits of what’s possible and tackling complex challenges. A career at JetCool offers the opportunity to make a real impact by helping build smarter, more sustainable data centers. Together, we’re not just advancing technology — we’re redefining cooling standards to create a more sustainable tomorrow. ## Job Summary To support our extraordinary teams who build great products and contribute to our growth, we’re looking to add a **Sr. Mechanical Design Engineer** located in**Littleton, MA.** Reporting to the**Mechanical Development Associate Principal Engineer** the **Sr. Mechanical Design Engineer** will take full ownership of converting concepts and SolidWorks CAD models into robust, manufacturable, and production‑ready designs. This role is responsible not just for creating models, but for expertly detailing SolidWorks designs into clear, complete, and executable documentation that enables low‑cost, high‑quality, repeatable manufacturing. **What a typical day looks like:** * Take end‑to‑end ownership of detailed mechanical design, from early concepts through fully released, production‑ready SolidWorks models and documentation. * Expertly detail SolidWorks parts and assemblies, converting conceptual designs into fully defined geometry with proper tolerances, fits, interfaces, and manufacturing intent. * Own tolerance stack‑ups, GD&T application, and fit/function strategy, ensuring designs assemble reliably and perform as intended in production. * Produce high‑quality engineering drawings (machined parts, sheet metal, weldments, and assemblies) using ASME Y14 and applicable industry standards, with clarity suitable for external suppliers. * Own weldment modeling and drawings in SolidWorks
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