Our Team

Our leadership comes from successfully meeting the challenges presented by an evolving and dynamic technology industry; navigating the headwinds and riding its waves of continual expansion and change. United by a vision formed by creativity and market focus, we are dedicated to enabling our customers’ ongoing success and a driving commitment to quality.


Michael Burger, President and Chief Executive Officer

Michael Burger was appointed President and CEO of ESI on October 3, 2016. Prior to joining ESI, Mr. Burger was President and Chief Executive Officer of Cascade Microtech since 2010. Prior to joining Cascade Microtech, Mr. Burger served as the President and Chief Executive Officer of Merix Corporation, a printed circuit board manufacturer, from April 2007 to February 2010. From November 2004 until joining Merix, Mr. Burger served as President of the Components Business of Flextronics Corporation. From 1999 to November 2004, Mr. Burger was employed by ZiLOG, Inc., a supplier of devices for embedded control and communications applications. From May 2002 until November 2004, Mr. Burger served as ZiLOG's President and a member of its board of directors. Mr. Burger holds a B.S. degree in Electrical Engineering from New Mexico State University and a certificate from the Stanford University International Executive Management Program.

Paul Oldham, CFO, Sr. Vice President of Administration, Chief Financial Officer and Corporate Secretary

Paul Oldham is Senior Vice President of Administration, Chief Financial Officer and Corporate Secretary at Electro Scientific Industries, Inc. (ESI), where he has directed administrative and financial operations since joining the company in 2008. Mr. Oldham brings a wealth of knowledge and experience in global financial and operational planning to the company. His career spans nearly twenty years of administrative and financial management expertise within the high technology industry. Prior to ESI, Mr. Oldham held several senior leadership positions at Tektronix Inc. (Danaher Corporation) including Vice President of Tax, Treasury and Investor Relations, Vice President of Finance and Corporate Controller and European Operations Controller. Mr. Oldham earned his Bachelor of Science degree in accounting and MBA from Brigham Young University in Utah.

Steve Harris, Vice President of Engineering

Steve Harris joined the ESI team in February of 2017 as Vice President of Engineering. Mr. Harris brings over 30 years of engineering, engineering management and business management experience.   Prior to joining ESI, Mr. Harris spent 7 years at Cascade Microtech where he served as Vice President of Engineering, and as VP & General Manager.   Prior to joining Cascade Microtech, Mr. Harris worked 11 years at ESI where he held roles of Vice President Research, Development & Engineering and VP & General Manager Semiconductor Products division.   Mr. Harris spent the first 13 years of his career at Tektronix in development engineering, program management, and engineering management roles. Mr. Harris holds a B.S. degree in Electrical Engineering from the University of Idaho and a certificate in General Management from Oregon Graduate Institute.

John Williams, Vice President of Marketing

John Williams joined the ESI team in February of 2017 as Vice President of Marketing. Mr. Williams brings over 20 years of experience in increasingly responsible roles involving marketing management and strategy. Prior to joining ESI, John was Vice President, Marketing for Thermo Fischer Scientific, previously FEI, where he had served for ten years—seven as Vice President, Corporate and Strategic Marketing. Prior to FEI, he spent five years as Director of Marketing at Brooks Automation. John had previously held Product Marketing Manager responsibilities at a number of technology-focused firms. He has a degree in Mechanical Engineering from Cal Poly - San Luis Obispo.

Clifton Ho, Vice President of Global Sales and Service

Clifton Ho joined ESI in April of 2017 as Vice President of Global Sales and Service. He has a strong background in technology sales and sales leadership with a focus on Asia markets, and experience that includes nearly three decades in semiconductor-related sales and marketing in Asia. Prior to joining ESI, he spent seven years as Vice President of Asia Pacific Sales at Intersil Corporation, where he managed an extensive sales organization across Asia. Before joining Intersil he served for eight years in various management roles at National Semiconductor, where he was General Manager for China Sales from 2006 to 2010, and Director of Marketing for Asia Pacific from 2002 to 2006. His other experience includes Director of Asia Sales at QuickLogic Corporation. Clifton holds a Bachelor of Science degree in Electronics from Tufts University and a Masters degree in Electrical Engineering from Cornell University.

Michael Stubelt, Vice President of Business Development

Michael Stubelt was appointed Vice President of Business Development in May 2017. Prior to this appointment, Michael spent four years as Regional Vice President of Sales; with responsibility for Vietnam, Korea, Japan, Americas and Europe. Since joining ESI in 2007 he has held a number of strategic positions, with management roles in Marketing, Sales Management and Global Account Management. Mr. Stubelt has over 20 years of global sales and business development experience, building relationships with global companies in the Semiconductor, LED, Scientific and PCB industries. Prior to joining ESI, he served as Global Director for the LED Business at New Wave Research. Prior to New Wave Research Mr. Stubelt led the International Sales teams for Molecular Imprints and had managed the Global Sales and Services operation for Wentworth Laboratories. Mr. Stubelt holds a B.S in International Business Administration and Finance from Western Connecticut State University.

Tracey Jerijervi, Vice President, Human Resources and Organizational Development

Tracey Jerijervi is Vice President of Human Resources and Organizational Development at Electro Scientific Industries (ESI). Joining the company in 2007, Ms. Jerijervi has built a strong track record of delivering HR solutions aligned with business objectives. With over 20 years of industry experience, she has held a number of senior human resource leadership positions within high tech companies such as RadiSys and Tektronix. Currently, Ms. Jerijervi serves on the board of directors of Junior Achievement, a not-for-profit organization dedicated to inspiring and preparing youth to succeed in the global economy. She graduated from Western Michigan University with a Bachelor of Science degree.

Richard Tan, Vice President Operations

Richard Tan was appointed Vice President of Operations in February 2017. Prior to this appointment Richard spent four years as the General Manager of ESI Singapore. Previously, Richard spent four years as the Senior Director of Operations for the Solar Division of MEMC/Sun Edison. Prior to joining MEMC Richard spent 15 years in increasingly responsible manufacturing, product planning, and logistics roles at Infineon. He holds a degree in Mechanical & Production Engineering from Nanyang Technological University and a Graduate Diploma in Business Administration from Singapore Institute of Management.


Richard H. Wills, Chairman of the Board since 2014

Mr. Wills (Chairman) was President and CEO of Tektronix from 2000 until 2008, and its Chairman from 2001 through 2008. He joined Tektronix in 1979 and served in a range of marketing, product development and management roles, including President of the Measurement Business and President of Regional Operations for both Europe and the Americas. He holds a master's degree in business administration from the University of Oregon and a bachelor's degree in computer systems from Linfield College.

Frederick A. Ball, Director since 2003

Frederick A. Ball is a recognized and respected business leader with more than 25 years of financial management experience. He recently served as the chief financial officer of Marketo, a leading provider of a cloud-based enterprise marketing platform from 2011 to 2016.  Prior to joining Marketo, Mr. Ball had been the Chief Financial Officer for a number of private and public technology companies including Webroot Software, Inc., BigBand Networks, Inc., and Borland Software Corporation. Mr. Ball also served as Vice President, Mergers and Acquisitions for KLA-Tencor Corporation, a manufacturer of semiconductor equipment, and prior to that as its Vice President of Finance. Mr. Ball was with PricewaterhouseCoopers LLC for over 10 years. Mr. Ball is a director at Advanced Energy Industries, Inc., a provider of power and control technologies, and is chair of its audit committee.

Laurence E. Cramer, Director since 2015

Laurence E. Cramer has been with Continuum Electro-Optics, a manufacturer of high energy laser systems for medical, industrial and scientific research, for the past 16 years where he held the positions of Vice President of R&D, Vice President / General Manager and President. Prior to that, he was President of Laser Diode Inc., a manufacturer of GaAs laser diodes for military and telecom applications. Prior to that he spent 15 years at Spectra-Physics in a range of management roles including, Manager of Marketing and Sales, Strategic Product Group Manager, and President of Spectra-Physics Laser diode systems, developer of advanced diode pumped solid state laser systems. He was a Board Member and past President of the Laser Institute of America, and was a member of the U.S. Department of Commerce Technical Advisory Committee in Electronics from 1988 to 1994. He holds a BA degree in Chemistry and Physics from DePauw University, a PhD in Chemistry from Northwestern University and a Masters Certificate in Six Sigma from Villanova University.

Raymond A. Link, Director since 2015

Raymond A. Link served as Executive Vice President and Chief Financial Officer of FEI Company, a leading supplier of scientific and analytical instruments for nanoscale imaging from July 2005 to April 2015. He remains with FEI Company to assist with transitioning this role to his successor. Prior to this, Mr. Link served as Vice President, Finance and Administration, Chief Financial Officer and Secretary of TriQuint Semiconductor, Inc., a manufacturer of electronic signal processing components primarily used in wireless communications. Mr. Link joined TriQuint in July 2001 as a result of TriQuint’s merger with Sawtek, Inc. In September 1995 Mr. Link joined Sawtek, Inc., a designer and manufacturer of a broad range of electronic signal processing components primarily for use in the wireless communications industry, as Vice President Finance and Chief Financial Officer. He is also on the board of directors of nLight Corporation, a private company that makes high-power semiconductor lasers and Cascade Microtech Inc. a public company that is a manufacturer of electrical test and measurement equipment for the semiconductor industry. Mr. Link received a B.S. degree from the State University of New York at Buffalo and an M.B.A. from the Wharton School at the University of Pennsylvania. Mr. Link is also a licensed Certified Public Accountant.

John Medica, Director since 2015

John Medica has served since 2007 as Vice Chairman and Corporate Adviser of Compal Group, a leading global electronics related ODM based in Taiwan with annual revenues in excess of $25 billion. Mr. Medica also served as a member of the Board of Directors of National Instruments from June 2008 through May 2014 and is a Trustee at Wake Forest University. He retired as a Senior Vice President and co-leader of the Product Development organization at Dell Inc. in April 2007 after fourteen years of service and prior to joining Dell, he served ten years at Apple Inc. in a variety of product development and operations related executive roles. He also has served as a Board Member-Advisor of two start-up technology companies, Visible Brands and Aviacomm, over the past two years.

For industries facing material transformation challenges in production,  ESI applies unique process and engineering expertise to deliver a set of laser-based solutions that extend our customers’ processing capabilities beyond the limitations of mechanical.

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