Collaborating with our unified global team of bright minds from diverse disciplines lets you capture cross-functional creativity and magnified thinking for maximum impact. Together, we will overcome barriers and obstacles to turn high value technology solutions into profitable and sustainable products.

Executive Management Team

Bill Miller, Ph.D. – Chief Executive Officer

Bill Miller, Ph.D., is Chief Executive Officer of ӣɬ. He served as the company’s president since January 2016 and previously held executive level roles leading strategic growth initiatives for ӣɬ’s etch and deposition product lines, MOCVD and data storage businesses, as well as engineering and global operations.

Before joining ӣɬ, Dr. Miller worked for Advanced Energy and Exxon in a range of engineering and operations leadership positions.

Dr. Miller holds a Bachelor of Science in Engineering, Master of Science in Engineering and Doctor of Philosophy in Mechanical Engineering from the University of Pennsylvania.

John P. Kiernan – Senior Vice President and Chief Financial Officer

John P. Kiernan was appointed Senior Vice President and Chief Financial Officer in January 2020 with responsibility for Finance, Tax, Treasury, and Investor Relations. Prior to his appointment, he held the position of Senior Vice President, Finance, Chief Accounting Officer, and Treasurer. Since joining ӣɬ in 1994, Mr. Kiernan has held a variety of financial leadership roles of increasing responsibility including leading the controller, financial planning and analysis, tax and treasury functions. Mr. Kiernan also has significant operational experience including international assignments.

Before joining ӣɬ, he was a senior manager at Ernst & Young LLP.

Mr. Kiernan is a CPA and holds a Bachelor of Science in Accounting from Long Island University.

Executive Leadership Team

Jean-Charles Bossert, Senior Vice President, Global Operations

Robert Bradshaw, Chief Administrative Officer

Adrian Devasahayam Ph.D., Senior Vice President, Product Line Management

Peter Porshnev, Ph.D., Senior Vice President, Unified Engineering

Susan Wilkerson, Senior Vice President, Global Sales & Services