Senior Principal Tool Engineer

We anticipate the application window for this opening will close on - 19 Sep 2026   Careers that change lives start here. Medtronic is a global leader in healthcare technology with a Mission to alleviate pain, restore health, and extend life. Our 95,000 employees work across more than 150 countries to put patients first — developing innovative medical technologies that improve the lives of 72+ million patients each year. Your unique talents will help shape the future of healthcare while building a career grounded in purpose, growth, and impact. A Day in the Life At Medtronic, we bring bold ideas forward with speed and decisiveness to put patients first in everything we do. This position is remote to enhance our competitive edge and expand our cross-functional collaboration efforts. This role requires 50% of travel to enhance collaboration and ensure successful completion of projects. Molding & Capital Tooling strives to be a trusted, technical-focused organization by delivering molds on schedule, within budget, and of the highest quality, while promoting team development, innovation, and partnerships. The Senior Principal Tooling Engineer leads the design, build and process development of injection molding tools for plastic components within New Product Development, ensuring alignment with product design, material, and manufacturing requirements. This role provides technical leadership in plastic part design, mold flow analysis, polymer rheology, and tooling design while guiding suppliers through tool build, validation, and qualification activities. The engineer applies Geometric Dimensioning and Tolerancing (GD&T), tolerance stack-up analysis, and statistical methods such as DOE, MSA, and SPC to support robust process development. This supplier-facing role also leverages 3D CAD, data analysis tools, and SPI standards to ensure high-quality molded components and reliable tooling performance.

Solid understanding of Plastic Part Design / Injection Molding Guidelines. Knowledgeable in the use of 3D CAD packages & Data Analysis software. Understands Mold Flow analysis Rheology knowledge both Crystalline & Amorphous plastics resin (examples include polycarbonate, acrylic, PVC, Nylon and Co-polyesters) Demonstrated ability to guide and coordinate vendor tool design and qualification activities to meet requirements of the application and DRM guidelines Understands limits / fits, tolerance stack up analysis. Understanding of Geometric Dimensional Tolerancing (GDT) and application for inspection setup and tolerancing allowances of molded components Provide technical assistance and guidance to suppliers and contract manufacturers performing qualification and validation testing  Use and understanding of Statistical Tools (Design of Experiments, Measurement System Analysis/Gage R&R, Process Capability and Statistical Process Control) Use of Society of Plastics Industry Standards (SPI) for mold build classification and texture/surface appearance recognition The Sr Principal Tooling Engineer is responsible for owning and driving mold tool development and injection molding projects through adherence to established product design, scientific injection molding process, tooling, resin, and equipment. The role is supplier facing Required Qualifications Bachelor’s degree 10+ years of experience with a bachelor’s degree or 8+ years of experience with an advanced degree Preferred Qualifications Degree in plastics, mechanical, manufacturing or industrial engineering Previous Medtronic/medical device experience Molding certifications Strong organizational skills Analytical problem solving High level of professionalism and strong communication skills Demonstrated initiative and innovation Ability to transfer the technical knowledge to manufacturing operations Review/prepare test protocols and reports in order to qualify part and product changes Work remotely across