Yield Engineering Systems, Inc. (YES) Management

Ken MacWilliams, CEO, Yield Engineering Systems, Inc. (YES)

Ken MacWilliams, CEO

Dr. MacWilliams worked with a very strong Advisory and Investment team to acquire YES in early 2018. Through a variety of Line management and strategic positions at Applied Materials, Veeco, and Lam/Novellus, he became a High-Tech Business Leader with a blend of P&L experience, venture investment, high technology development, marketing, operations, startup and M&A. He attended Stanford University for MS, PhD in Electrical Engineering, was an NSF Fellow, has over 100 publications, and more than a dozen patents. He also enjoys half marathons. Email: [email protected]

Willliam A. Moffat, Founder & CEO

William A. Moffat, Founder

Mr. Moffat is a process engineer turned entrepreneur. He founded Yield Engineering Systems (YES) in 1980, introducing a vacuum bake/vapor prime system that innovated front-end processing in the semiconductor industry. Mr. Moffat was born and educated in the UK; he received an HNC in Electronics and an HNC in Mechanics from Stockport Technical College. He previously held engineering positions at AEI, W.T. Glovers & Co., British Aerospace, Ferranti's, Motorola, Rockwell and Advanced Micro Devices (AMD). Email: [email protected]

Dan Dunkly, President

Dan Dunkly, President

Mr. Dunkly joined YES in 1985 and was promoted to President in 2000. Prior to becoming President, he held a variety of senior positions, including, COO, VP of Manufacturing and Operations Manager. His current responsibilities include directing the company through challenges of strategic planning, growth, opportunity, and financial planning. Email: [email protected]

Zia Karim

Zia Karim, Senior VP and Chief Marketing Officer

Dr. Karim is Chief Marketing Officer and Senior Vice President of Business Development and Strategic Marketing at YES. Dr. Karim most recently was Vice President of Business Development and Technology at Eugenus/AIXTRON/Genus (acquisitions) for over 15 years. He has also held senior management positions at Applied Materials and Novellus (acquired by Lam Research) after he started his career in Sharp Microelectronics in 1994. Dr. Karim received his Ph.D, in EE from Dublin City University in Ireland, Dr. Karim owns fourteen (14) patents and authored more than 40 papers. Email : [email protected]

Rezwan Lateef, Senior VP Sales & Service

Mr. Lateef is Senior Vice President of Sales & Service at YES. He has over 15 years' experience in the semiconductor industry and was a key executive in the successful sale of two companies. Rezwan has also held leadership positions at MKS, NEXX Systems, TEL, Ultratech & Veeco. Mr. Lateef holds a BSEE and MSEE from the University of Illinois at Urbana-Champaign and has completed the executive management training program at the Harvard Business School. Email: [email protected]

Randy Hall, VP of Engineering

Formerly held positions at Intel, Novellus and Oraxion.

Fred Garcy, Chief Financial Officer

Email: [email protected]

Technical Team

Ken Sautter, Chief Process & Applications Engineer

Ken Sautter, Director of Technology

Mr. Sautter is a customer turned employee, which brings a lot of insight into his position as chief process and applications engineer. He started with YES in 2005; since then, the bulk of his days have been spent running tests and troubleshooting processes with customers. Formerly, he served as an officer in the U.S. Navy and worked for GCA, Solitec, and Vertical Circuits. Mr. Sautter has a B.S. in Chemistry from M.I.T. and an M.S. in Imaging and Photographic Science from R.I.T. He also holds 16 patents related to equipment and processing. Email: [email protected]

Bo Randazzo, Field Service Manager

Bo Randazzo, Field Service Manager

Mr. Randazzo leads our support and field service technicians. He's been with YES since 1989 and has a background in electronics, automotive mechanics and digital electronics. Since joining YES, he's traveled far and wide to customer locations, ensuring smooth system installations and start-ups. Email: [email protected]

News & Updates

Other Updates


  • February 11-13, 2020 - Visit YES at booth #904 at Medical Design & Manufacturing (MD&M) West, Anaheim, CA
  • May 26-29, 2020 - Visit YES at booth #208 at ECTC 2020, Orlando, FL
  • July 21-23, 2020 - Visit YES at Booth #5969 at SEMICON West 2020, in San Francisco, CA

About Our Company

Located in Livermore, California, Yield Engineering Systems (YES) is a privately held company that manufactures engineering process control equipment to meet the needs of innovative engineers and lab managers.

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