Management Team

Roger Lee President & Chief Executive Officer, TF Semiconductor Solutions, Inc.

Roger brings more than 30 years of semiconductor technology, management experience and leadership to TF Semiconductor Solutions. As President and CEO of TF Semi, Mr. Lee is focused on corporate management and growth of the company.

Roger began his career as an engineer for Texas Instruments in Houston, Texas, and he has been making his own mark across the globe ever since. During his career, Roger has served on numerous boards and held a variety of executive and senior-level positions for several companies, including Senior Vice President of SMIC, which went public and became the third-largest foundry in the world, and Senior Fellow of DRAM and Flash, and the Head of flash memory responsible for the overall company flash memory technology development at Micron Technology Boise. More recently, he was COO and board member of Founder Microelectronics, Inc. in Shenzhen, China.  

Prior to becoming the CEO of TF Semiconductor Solutions, Roger served as world-wide COO and Interim President & CEO of Telefunken Semiconductors, Roseville, California and Heilbronn, Germany. 

Roger has been awarded more than 150 U.S. patents and earned his Bachelor’s degree and Master’s degree in Electrical Engineering from Iowa State University.


Ken Nowak Senior Vice President of Product Engineering & Product Quality, TF Semiconductor Solutions Inc.

Ken brings more than 23 years of work experience in Test Engineering and Product Qualification to TF Semiconductor Solutions.  Mr. Nowak will lead the Test Engineering and Product Qualification teams which enable TF Semi to get solutions to market faster than their competitors.

Ken began his semiconductor career with Unitrode Integrated Circuits, a leader in power management semiconductors. While at Unitrode, he broadened his background managing product test solutions and qualifications in the analog device space. He continued to expand his technical and management skills as an Engineering Manager with Texas Instruments in Manchester, New Hampshire.

Prior to joining Telefunken and now TF Semiconductor Solutions, Ken was the Eastern U.S. Applications Manager for Eagle Test System (Teradyne). There he supported 14 semiconductor manufacturers worldwide, played a key role in winning Eagle’s largest customer, and was a member of the IPO team.

Ken earned his Bachelors degree in Computer Science from Franklin Pierce University and an Industrial Electronics degree at New Hampshire Technical College. He has completed advanced classes in Statistical Process Control, Gage Capability Analysis and Leadership.


Duke Walton Vice President Worldwide Sales & Marketing, TF Semiconductor Solutions, Inc.

Duke Walton brings more than 25 years of executive sales management, business development, and marketing experience to TF Semi. As Vice President of Worldwide Sales & Marketing, Mr. Walton is responsible for revenue, sales growth, marketing and business development initiatives.

Duke worked previously with the Information Security Forum (ISF) where he held the role as Vice President Sales & Business Development – Americas.  At ISF, Duke expanded the Americas Region’s business by 50% annually.  Prior to ISF, Duke was the Director of Strategic Alliances & Professional Services at Counterpane Internet Security.  There he insured Counterpane had the right Global Strategic Relationships. Duke also launched Counterpane's Professional Services practice.  Proceeding Counterpane, Mr. Walton held executive sales and marketing positions with ServGate Technologies, Red Hat/Cygnus Solutions and Creative Technologies.

Prior to co-founding TF Semi, Duke was the Vice President, Worldwide Sales & Marketing for Telefunken Semiconductors International.  At Telefunken, Duke established an international sales channel and expanded the business into Asia and the Americas.

Duke earned his Bachelor’s degree in Business Management from Brigham Young University -Hawaii. 


John Jeong, Vice President of Product Design Engineering,TF Semiconductor Solutions Inc.

John brings more than 25 years of work experience in IC design and development to TF Semiconductor Solutions and leads its IC Design and Development team providing effective solutions for its customers.

John started his semiconductor career with Samsung Electronics and then became a team leader in analog mixed signal IC design. He continued to expand his design and management experience with International Rectifier in El Segundo, California as a design engineer, and Maxim Integrated Products in Korea as its design center manager, and prior to joining TSI now TF Semiconductor Solutions, Jeong was Sr. design director of Telefunken Semiconductors.

John earned his BSEE degree from Korea University in Seoul, Korea.