Management Team

Image of Mark E. Jagiela

Mr. Jagiela became CEO of Teradyne in February of 2014. He has been President of Teradyne since January 2013 and the President of the Semiconductor Test Division since 2003.  He is also on the Board of Directors. Prior to these roles, he was the worldwide marketing manager of Teradyne's semiconductor test products from 2001 to 2003. Mark joined Teradyne in 1982 as a design engineer, developing image sensor test systems. From 1989 to 1999 he served as general manager of Teradyne's Japan Division. He returned to the U.S. in 1999 as the engineering manager for the company's VLSI Test Division in Agoura Hills, California. Mark holds a BSEE from the University of Michigan.

Mr. Jagiela has been a director of Teradyne, Inc. since 2014.


Image of Gregory R. Beecher

Mr. Beecher has been Teradyne's Chief Financial Officer since 2001 and the Treasurer since 2007. He oversees the company's Finance, Treasury and Accounting Control, Operating, Real Estate, Information Technology, and Human Resource functions.

Prior to joining Teradyne, Greg was a partner at PriceWaterhouse Coopers LLP (PwC). At PwC, he served in the National Office, where he offered consulting on complex accounting matters. Over his 18 year public accounting career, he led audits and internal control engagements with numerous technology companies. Additionally, he served on the Board and was the Audit Committee Chairman of MatrixOne, a leading software product life cycle company, prior to its acquisition by Dassault Systems in 2006. He currently serves on the Board of Directors of Hittite Microwave Corp. and MKS Instruments, where he is also the Audit Committee Chairman.

Greg received a B.S. from the University of Hartford and M.S. in Accounting from Northeastern University.

Image of Charles Gray
Mr. Gray is vice president, general counsel and secretary of Teradyne with responsibility for the worldwide legal affairs of Teradyne. Charles joined Teradyne from Sonus Networks where he was Vice President and General Counsel from 2002 to 2008. Prior to Sonus, he served as General Counsel of Appian Communications and ArrowPoint Communications. He was Associate General Counsel at Wang Global from 1996 through its acquisition by Getronics in 1999. He began his career as a trial attorney at Hale and Dorr from 1988 to 1996, where he specialized in technology and antitrust litigation. Prior to entering private practice, he clerked for The Honorable J. Lawrence Irving in the United States District Court for the Southern District of California.

Charles is a graduate of Georgetown University and Boalt Hall School of Law at the University of California, Berkeley.
Image of Walter Vahey

Mr. Vahey is the president of Teradyne's System Test Division, which includes the Commercial Board Test, Defense and Aerospace Test and Storage Test business units. Prior to this role, he was general manager of the Defense and Aerospace Test business since 2004 and of the Storage Test business since 2008. Walter was named a vice president in 2008. He joined Teradyne in 1986 and has since held a variety of roles in engineering, sales and marketing. From 2001 - 2004, he was vice president of marketing and business operations at Empirix, a communications test company.

Walter holds a BS in Electrical and Computer Engineering from Carnegie Mellon University.