Board of Directors

Randy Altschuler is the Co-founder of Xometry and the Executive Chairman of the Board. A successful entrepreneur, Randy co-founded Xometry in 2013 and served as its CEO for its first 13 years. He transitioned to Executive Chairman in July 2026. Under his leadership as CEO, Randy took the company public in 2021.

Prior to Xometry, Randy co-founded and served as Executive Chair of CloudBlue, a provider of recycling services for electronic equipment that was acquired by Ingram Micro in 2013. He also co-founded and served as co-CEO of OfficeTiger, a global BPO company that employed 4,500 people and was acquired by RR Donnelley in 2006. He began his career working in investment banking at Donaldson, Lufkin & Jenrette and real estate private equity at Blackstone.

Randy graduated from Princeton University, earned an MBA from Harvard Business School, and studied at the University of Vienna as a Fulbright Scholar. He also serves on the Board of Directors of OpenLane (NYSE: KAR), a leading operator of digital marketplaces for wholesale used vehicles.

Fabio Rosati has been a member of Xometry’s Board of Directors since December 2017 and was Chair of the Board from December 2023 through June 2026.

Fabio is the Executive Chair of Snagajob, a marketplace platform for connecting businesses with hourly workers, where he previously served as Chair and Acting CEO. He also served on Upwork's board of directors, a position he held after serving as the company's CEO from January 2014 to April 2015. Fabio is a board member of Smith.ai and Skysthelimit.org. He received a B.S. in Finance and Accounting from Georgetown University and is an expert in the growth and development of marketplaces.
 

Roy Azevedo, who spent 34 years with Raytheon Technologies, was appointed to Xometry’s Board of Directors in October 2024. 

The former president of Raytheon Technologies’ Space And Airborne Systems and Intelligence And Space business units, Roy brings significant experience in global manufacturing, engineering and supply chain management to Xometry. Throughout his career, he has championed efforts to digitize entire product lifecycles, from engineering and design to production and delivery. His extensive enterprise management expertise will help Xometry as it continues to scale internationally, serving customers across all industries. 

Roy began his career as a design engineer. He earned his Bachelor of Science in Electrical Engineering from Northeastern University’s College of Engineering in 1986.

Lukas Biewald was appointed to Xometry’s Board of Directors in May 2026. He is a two-time founder and current SVP of AI Initiatives at CoreWeave, Inc. (NASDAQ: CRWV).

He is the co-founder and former CEO of Weights & Biases, the AI developer platform acquired by CoreWeave in 2025. At the time of acquisition, the platform was used by more than 1 million engineers and over 1,400 organizations worldwide as their system of record for training, fine-tuning, and deploying AI models.

Earlier in his career, Biewald co-founded Figure Eight (formerly CrowdFlower), a machine learning data platform acquired by Appen in 2019. He previously served as Senior Scientist at Powerset and led the Search Relevance team at Yahoo! Japan. Biewald is also the host of Gradient Dissent, a podcast on machine learning in production featuring conversations with leaders from Nvidia, OpenAI, Meta, GitHub, Atlassian, and others at the frontier of applied AI. He holds a B.S. in Mathematics and an M.S. in Computer Science from Stanford University.

Ranjana Clark has been a member of Xometry’s Board of Directors since June 2021. 

Since July 2013, Ranjana has held a number of positions with Mitsubishi UFJ Financial Group, or MUFG, and is currently the Head of Global Transaction Banking. Prior to joining MUFG, Ranjana was the Chief Customer and Marketing Officer at PayPal from May 2011 to June 2013. Prior to that, Ranjana spent over 25 years in the financial services industry in roles spanning payments, marketing, strategy and business leadership. Ranjana currently serves on the Board of Directors of StanCorp Financial Group, Inc., a position she has held since July 2014. Ranjana received a B.A. from the University of Delhi, an M.B.A with an emphasis in Marketing from the Indian Institute of Management, Ahmedabad, and an M.B.A with an emphasis in Finance from Duke University’s Fuqua School of Business.
 

Emily Rollins has been a member of Xometry’s Board of Directors since March 2021. 

Emily served in various positions at Deloitte & Touche LLP from 1992-2020 including most recently as an Audit & Assurance Partner specializing in the technology, venture capital, and life sciences industries. Emily brings strong board and management experience with complex audit and reporting processes for technology and media companies. She also serves on the board of Dolby Laboratories, Inc. Emily holds a B.A. in Accounting and International Relations from Claremont McKenna College. 
 

Sanjeev Singh Sahni is the CEO of Xometry and was appointed to the company's Board of Directors in July 2026. He joined Xometry in January 2025 as President, leading Product, Technology, Operations, and Talent.

Sanjeev’s career spans decades of identifying, scaling, and leading B2B businesses. Prior to Xometry, he worked at Wayfair, where he led their multi-billion-dollar B2B business, transformed B2B and B2C sales and customer experience through its fastest growth years, and built Wayfair’s digital freight-forwarding business, CastleGate Forwarding. He has also held leadership positions at McKinsey & Company, Citibank, and IBM.

Sanjeev earned his Bachelor of Technology degree from the Indian Institute of Technology (BHU) and his MBA from the Indian Institute of Management (Lucknow). He also attended the Yale School of Management for Organizational Leadership.

Katharine Weymouth has been a member of Xometry’s Board of Directors since October 2020. 

Katharine is the Co-Founder and Senior Advisor of The Chef Market (formerly DineXpert), an on-demand platform for restaurants. Previously, Katharine was the Publisher and Chief Executive Officer of the Washington Post. Since January 2015, she has also served as a Trustee of the Philip L. Graham Fund. She is a board member of Republic Services, Inc., Cable One, Inc., Sequoia Mutual Fund, and The Graham Holdings Company. Katharine received a B.A. in English Literature from Harvard University and a J.D. from Stanford Law School.