Our Team

Madhu Stemmermann

Madhu Stemmermann

CEO, Owner

  • 25+ years of experience in senior leadership roles across sales, manufacturing, supply chain, engineering and product management
  • Focus areas include: environmental health & safety, customer focus, quality, lean six sigma
  • She has worked across various industries such as medical devices, lighting and electronics with Becton Dickinson, Air Products, Honeywell and General Electric
Andrew Stemmermann

Andrew Stemmermann

COO, Owner

  • 25+ years of experience in mechanical engineering, application development and formulation development of conductive adhesives
  • Focus areas include: application development, formulation and process development of conductive adhesives
  • He is the developer of ZTACH ® ACE formulations and magnetic pallet design and processes
Kumar Khanna, Ph.D.

Kumar Khanna, Ph.D.

CTO, Founder

  • 35+ years of experience in polymer thick films
  • Bell Fellow at Lucent Technologies
  • Inventor of ZTACH® ACE technology
S. Manian Ramkumar, Ph.D.

S. Manian Ramkumar, Ph.D.

Technical Advisor

  • Dean of the College of Engineering Technology ENT at the Rochester Institute of Technology (RIT)
  • Dr. Ram leads SunRay’s technology efforts. He has over 15 years’ experience in Electronics Packaging and Research and lead the pioneering efforts in using ACAs for PCB level electronics
Jim de Vries

Jim de Vries

VP, Business Development

  • 30+ years of experience across R&D, industrial, service & consumer markets
  • Roles held: Regional/Global Marketing, Sales, Customer Service, Operations, Finance & Operational Excellence Director