Darin Grinsteinner

Darin Grinsteinner is a seasoned engineering professional with extensive experience in product and process development, particularly in thermoplastics and composites. Currently serving as a Product and Process Development Engineer Six Sigma at Celanese since June 2014, Darin specializes in high-performance continuous reinforced thermoplastic composites and thermally conductive plastics. Prior to this role, Darin held the position of Engineering Manager at Composite Products Inc. for over a decade, where responsibilities included leading a senior management team and mentoring engineering staff. Darin's career began at Johnson Controls Automotive as a Six Sigma Black Belt, achieving significant cost savings, and included engineering roles at RTP Company and STORAGETEK LIMITED, where foundational skills in thermal and mechanical analysis, as well as marketing, were developed. Darin holds a Bachelor of Science in Composite Materials Engineering from Winona State University.