Management
William E. Siwek President & CEO, Director

William (Bill) Siwek has served as President since May 2019 and assumed the role of Chief Executive Officer and was elected to the Board of Directors in May 2020. Bill started with TPI as our Chief Financial Officer in 2013. From September 2012 to September 2013, Bill served as the Chief Financial Officer for T.W. Lewis Company, an Arizona-based real estate investment company. From May 2010 until September 2012, he was an independent consultant assisting companies in the real estate, construction, insurance and renewable energy industries. Bill served as Executive Vice President and Chief Financial Officer of Talisker Mountain, Inc., from January 2009 to April 2010 and he was President and Chief Financial Officer of the Lyle Anderson Company from December 2002 to December 2008. Bill spent 18 years, from September 1984 to May 2002, with Arthur Andersen where he became a Partner in both Audit and Business Consulting Divisions. Bill holds B.S. degrees in Accounting and Economics from University of Redlands. He is a certified public accountant.
Theo Gibson Chief Information Officer

Ramesh Gopalakrishnan Chief Operating Officer, Wind

Ramesh Gopalakrishnan has served as our Chief Operating Officer, Wind since May 2019. He previously served as our Senior Vice President, Technology, Quality and LATAM operations and prior to that as Senior Vice President of Technology and Industrialization since 2016. Mr. Gopalakrishnan has over 25 years of operations, manufacturing, supply chain, strategy and technology experience in the Americas, Europe and Asia. Previously, Mr. Gopalakrishnan was the Executive Vice President, Manufacturing for Senvion, based in Hamburg, Germany. Prior to this, he spent three years as COO of Suzlon Energy Composites in Pune, India, and 5 years with Halliburton Corp. in Houston, Texas in various supply chain and strategy leadership roles. Early in his career, Ramesh spent ten years with GE where he started as a mechanical engineer and quickly worked his way into leadership positions in product development, advanced technology programs, globalization and project management. Mr. Gopalakrishnan is a GE certified Six Sigma Master Black Belt. He received a bachelor’s degree from the Indian Institute of Technology, Mumbai and his Masters and Doctorate Degrees in Mechanical Engineering from the State University of New York at Stony Brook.
Adan Gossar Chief Accounting Officer
Adan Gossar joined us as our Chief Accounting Officer in July 2020. Mr. Gossar has 20+ years of progressive global experience driving growth for companies through acquisitions, accounting, operating and international experience within public, private and multinational organizations. Prior to joining TPI Mr. Gossar was the Chief Accounting Officer for Reef Technology. Prior to his time at Reef, Mr. Gossar held the position of Corporate Controller at both Veritiv (Fortune 500®) and Allconnect Inc. Mr. Gossar also worked at AGCO (Fortune 500®), Witness Systems, PRG-Schultz, and PricewaterhouseCoopers as an external auditor. Mr. Gossar has his MBA from Georgia College & State University and a BBA in Accounting from the University of Nairobi. He is also a Certified Public Accountant, Certified Management Accountant, Certified in Financial Management and Chartered Global Management Accountant.
James Hilderhoff Chief Commercial Officer

Bryan Schumaker Chief Financial Officer

Steven Fishbach General Counsel

Thomas Adams Senior Vice President – Wind

Thomas J. Castle Senior Vice President – Operations, Strategic Markets

Deane Ilukowicz Senior Vice President – Global Human Resources

Joseph Kerkhove Senior Vice President – Strategic Markets

Lance Marram Senior Vice President – Global Service

Adrian Oprescu Senior Vice President – Technology & Projects

Patrick D. Weir Senior Vice President - China

Paulo Silva Senior Vice President of Mexico Operations

Paulo Silva joined TPI in July of 2020 as Senior Vice President of Mexico Operations. Prior to joining TPI, Paulo was Senior Vice President of Global Blades for Senvion where he was responsible for the wind blade operations strategy and execution. During his eleven years at Senvion, he successfully led several wind blade factory expansions, start-ups and transitions globally. Paulo has over 27 years of operations, manufacturing, supply chain and quality experience. Prior to joining Senvion, Paulo spent twelve years with Faurecia Automotive where he had several leadership roles in quality, production, planning and eventually Plant Management. Earlier in his career he spent four years as a Quality Engineer with Ford Motor Company. In addition to English, Paulo is fluent in Portuguese, French and Spanish. He received his degree in Electronics/Communications Engineering from the Portuguese Merchant Navy Institute in Paço d’Arcos, Portugal.