We Enable Breakthrough Innovations

William McCombe

William McCombe has served as Velo3D’s Chief Financial Officer since August 2020. Mr. McCombe was previously the Chief Financial Officer at HZO, a company specializing in nanocoatings for electronics, from November 2018 to August 2020. Before that, he served as Executive Vice President and Chief Financial Officer at Maxar Technologies, a space technology company, from October 2017 to February 2018, Senior Vice President and Chief Financial Officer, Maxar Holdings from July 2016 to October 2017 and as Senior Vice President, Finance and Legal at Space Systems Loral (SSL), a division of Maxar Technologies, from 2014 until July 2016. He also previously worked as a Managing Director in investment banking at Bank of America, and before that at Morgan Stanley. Mr. McCombe has a LL.B. (Honours) in law and BComm in commerce from the University of Melbourne and an M.B.A. from Columbia University.

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Renette Youssef

Renette Youssef has served as Velo3D’s Chief Marketing Officer since October 2020. Her experiences include her time at Clever Inc., an ed-tech platform, where she was Vice President of Marketing from September 2015 to May 2017, and at CrowdFlower Inc., an artificial intelligence company, prior to it becoming Figure Eight, where she was Vice President of Marketing and Growth, and Tradeshift, where she was SVP Global Marketing & PR. Ms. Youssef holds a B.A. in Marketing and Communications from the University of Western Sydney.

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Jessie Lockhart Ph.D

Jessie Lockhart is Velo3D’s Chief People Officer, overseeing all aspects of the company’s people operations including global talent management, leadership and organizational development, talent acquisition, total rewards, engagement, and culture. She strives to ensure that the employees are thriving while the company is growing and scaling.

Jessie has over 20 years of global experience in Human Resources, most recently as an executive at Lam Research, a Fortune 300 semiconductor company, where she led talent management and learning and development. She holds a Ph.D. in Global Leadership and Change from Pepperdine University, as well as an MBA and a bachelor’s degree in communication studies from San Jose State University.

Jessie enjoys speaking at business and academic conferences and holds the following certifications: Executive Leadership from Cornell University, DEI in the Workplace from the University of South Florida Muma, a PHR from HRCI, Change Management from Prosci, and MBTI^®, FIRO^®, CPI 260^®, and DiSC^® instruments.

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Alexander Varlahanov

Alex Varlahanov leads Velo3D’s Engineering Team, designing hardware and software for the Sapphire family of printers. Alex joined the company in 2017 at the early research and development stage of the first Sapphire model. Alex’s focus is on expanding the breadth and depth of Velo3D’s additive manufacturing solution capability by delivering the next generation printer systems, as well as a full-stack software ecosystem supporting those printers. Alex holds a Master of Science in Applied Mathematics and Computer Science, with most of his career specializing in robotics, precision mechanics, control systems, digital data processing, and high-volume manufacturing.

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Zach Murphree Ph.D

Zach Murphree is Velo3D’s VP of Global Sales & Business Development. His mission is to help customers enable their disruptive technologies through metal additive manufacturing. This includes defining the next generation of hardware and software through close alignment with customer and industry needs and working to commercialize and drive adoption of Velo3D’s manufacturing solution. As a trusted leader in the AM industry, Zach spends much of his time building collaborative partnerships and educating users about what’s achievable using the Velo3D solution. His background includes engineering roles for energy companies, where he oversaw introducing metal additive manufacturing technology to a Fortune 500 energy company. He earned Bachelor of Science and PhD degrees in Aerospace Engineering from the University of Texas and has been granted more than 35 patents. Zach’s doctoral work was completed in hypersonic aerodynamics where he performed experimental investigation of shock wave boundary layer interactions.

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Dirk Rathsack

Dirk Rathsack is Managing Director Sales & Technical Sales Europe at Velo3D. In his role, he is responsible for managing the European sales organization and growing Velo3D’s commercial presence in Europe by helping customers take advantage of the Velo3D fully integrated metal additive manufacturing solution.

After completing his master’s degree in business administration at the Goethe University in Frankfurt, he spent 15 years in various sales and marketing leadership functions in the semiconductor industry at companies such as Arrow Inc. and Texas Instruments Inc. More recently, he served as the VP of Sales EMEA at Protolabs Inc., the world’s fastest digital manufacturing source for prototypes and low-volume production parts.

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Zachary Detweiler Ph.D

Zachary Detweiler is the Vice President of Technology at Velo3D. His desire to solve manufacturing challenges impacting the global community has led him to a career at startups that aim to change how things are made. In his role, Zach leads a team of talented scientists and technicians to develop Velo3D’s fundamental capabilities and provide manufacturers with novel and reliable production solutions. Zach has a proven track record of developing multiple technologies and taking them to commercial scale, and he appreciates the need to address both technical feasibility and market necessity when doing so. He holds a B.S. in chemistry from University of Mary Washington, and a Ph.D. in chemistry of materials from Princeton University.

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Chris Trout

Chris Trout joined Velo3D in 2017 to develop the company’s service infrastructure while participating hands-on in the first product launch. He continues to lead a team of dedicated professionals who focus on meeting our users’ unique operational requirements, developing their capabilities, and fostering strong partner relationships. Earlier in his career, Chris held both operational and service roles within Applied Materials, a semiconductor company, Solyndra, Inc., and Cogenra Solar Inc, both energy companies. He holds a BSEET from DeVry University and an MBA from the Keller Graduate School of Management.

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Robert Okunski

Robert Okunski has served as Velo3D’s Vice President of Investor Relations since August 2021. He has more than 25 years of experience in managing global Investor Relations programs across several technology industries in Silicon Valley. From March 2008 to August 2021, he was Vice President of Investor Relations for SunPower, a leading US residential and commercial solar energy company. From March 2005 to March 2008, he served as Senior Director of Investor Relations for Spansion, a semiconductor flash memory manufacturer. Prior to Spansion, he was Vice President of Investor Relations at PeopleSoft, a leading enterprise software company. Robert holds a B.A. in political science and economics from Colgate University as well as an M.B.A. from Moravian College.

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Bernard Chung

Bernard Chung serves as Velo3D VP of Finance and leads the organization’s accounting, finance, and SEC reporting teams. Prior to joining Velo3D in 2020, Bernard served as the Corporate Controller at Textainer Group Holdings, Director of Accounting for Knight-Swift Transportation, and held various management roles in FP&A and SEC Reporting for Amkor Technologies. He also previously worked as a Director in Advisory Services and Manager in Audit at the public accounting firm KPMG, which included a global rotation in Switzerland. He holds a Bachelor of Arts from Northwestern University and is a Certified Public Accountant.

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