Management Team

Jayshree Ullal

Jayshree Ullal

President and Chief Executive Officer

Jayshree Ullal is a networking executive veteran with 25+ years of experience and was named one of the "50 Most Powerful People" in 2005 Network World and one of the "Top Ten Executives" at VMWorld 2011. As President and CEO of Arista Networks, she is responsible for building the company's business in cloud networking.

Formerly, Jayshree was Senior Vice President at Cisco and responsible for $10B in annual revenue from Data Center, Switching and Services, including Cisco's flagship Nexus 7000 and Catalyst 4500 and 6500 product lines. During her tenure at Cisco, Jayshree forged key alliances with EMC, VMware and Microsoft in virtualization and application acceleration. Prior to joining Cisco, Ullal was the Vice President of Marketing at Crescendo Communications, which was Cisco's first acquisition in 1993.

Jayshree holds a B.S. in Engineering (Electrical) from San Francisco State University and an M.S. degree in engineering management from Santa Clara University. She is the 2013 recipient of the SCU School of Engineering Distinguished Engineering Alumuni Award.

Andy Bechtolsheim

Andy Bechtolsheim

Founder, Chief Development Officer and Chairman

As Chief Development Officer, Andy Bechtolsheim is responsible for the overall product development and technical direction of Arista Networks.

Previously Andy was a Founder and Chief System Architect at Sun Microsystems, where most recently he was responsible for industry standard server architecture. Andy was also a Founder and President of Granite Systems, a Gigabit Ethernet startup acquired by Cisco Systems in 1996. From 1996 until 2003 Andy served as VP/GM of the Gigabit Systems Business Unit at Cisco that developed the very successful Catalyst 4500 family of switches. Andy was also a Founder and President of Kealia, a next generation server company acquired by Sun in 2004.

Andy received an M.S. in Computer Engineering from Carnegie Mellon University in 1976 and was a Ph.D. Student at Stanford University from 1977 until 1982.

Kenneth Duda

Kenneth Duda

Founder, Chief Technology Officer and Senior Vice President, Software Engineering

Kenneth Duda is a pioneer in high-performance networking software and lead architect of Arista Networks EOS, a stateful modular operating system for all Arista Networks products. He is also the co-author of network virtualization specifications including VXLAN with VMware and NVGRE with Microsoft. From 2005 to 2008, Ken was also the Acting President of Arista Networks.

Prior to joining Arista Networks, Ken was the CTO at There.com, where he played a lead role in designing a real-time 3-D distributed system that scaled to thousands of simultaneous users. Ken was also the first employee of Granite Systems and led the software development effort for the Catalyst 4000 product line after the acquisition by Cisco.

Ken has 3 simultaneous engineering degrees from MIT and holds a Ph.D. in Computer Science from Stanford University.

Kelyn Brannon

Kelyn Brannon

Chief Financial Officer

Kelyn Brannon is a 25-year finance veteran in both public and private companies. Most recently Kelyn was Chief Financial Officer of Delivery Agent, based in San Francisco. Prior to that, Kelyn was CFO at Calix where she took the company to a successful IPO. Kelyn was CFO of Calypso Technology, Arzon and CEO of Studio Systems Inc. (Creative Planet). At Amazon.com, she was chief accounting officer, vice president of finance, and CFO of Amazon's international division. She has also held senior finance positions at Sun Microsystems, Lexmark International, and Ernst & Young, and is a member of the American Institute of Certified Public Accountants.

Kelyn has a B.A. in Political Science from Murray State University, Kentucky.

Anshul Sadana

Anshul Sadana

Senior Vice President, Customer Engineering

Anshul Sadana has over a decade of experience in engineering management, design & software development in the networking industry. Anshul joined Arista in 2007 and is responsible for product definition and development priorities of Arista’s next generation products. He also leads all systems engineering and customer advocacy functions.

Previously at Cisco, Anshul led the development of the Catalyst 4500 and 4900 product lines and also managed strategic customer relations.

Anshul has an M.S. in Computer Science from the University of Illinois and an M.B.A. from the Wharton School of Business.

Mark Smith

Mark Smith

Senior Vice President, Worldwide Sales Operations

Mark Smith brings 25 years of networking, security software and sales acceleration expertise. Mark is responsible for Arista's field operations, business development, products and services.

Previously Mark served as Executive Vice President of Worldwide Field Operations for Infoblox Inc. Prior to that he was Vice President of Corporate Sales of Juniper Networks and Vice President of Worldwide Sales of NetScreen Technologies from July 1999 to April 2004 where he was named one of VARBusiness' Top 100 Executives of the year and a Computer Reseller News Channel Chief.

Mark holds a B.A. in Political Science from Wheaton College, Wheaton, Illinois.

Andy Bechtolsheim

Andy Bechtolsheim

Founder, Chief Development Officer and Chairman

As Chairman and Chief Development Officer, Andy Bechtolsheim is responsible for the overall product development and technical direction of Arista Networks. Previously Andy was a Founder and Chief System Architect at Sun Microsystems. Andy was also a Founder and President of Granite Systems, a Gigabit Ethernet startup acquired by Cisco Systems in 1996.

Charles_Giancarlo

Charles Giancarlo

Board Member

Charles Giancarlo has over 25 years of experience in the semiconductor, communications and networking industries. Charles is currently a Managing Director at Silver Lake. Previously he served as Executive Vice President and Chief Development Officer of Cisco, leading the company’s overall product development and management activities and was directly responsible for Cisco’s expansion into a large number of new markets and technologies. Prior to and subsequent to Cisco Charles has founded a number of companies.

Ann Mather

Ann Mather

Board Member

Ann Mather has over 20 years experience as a financial executive. She served as Pixar's CFO from 1999 to 2004, and held senior international positions with Disney prior to that. Ann has been on the board of Google since 2005, and is Chair of their Audit Committee. Additionally, since December 2010, Ann has been Lead Director of MGM, the independent, privately-held motion picture, television, home video, and theatrical production and distribution company. Ann also serves on the board of Netflix and several other local technology companies.

Dan Scheinman

Dan Scheinman

Board Member

Dan Scheinman is a seasoned high technology executive, investor, and advisor for emerging companies. Dan has had a diverse and stellar 18-year career at Cisco Systems, where he contributed in growing the company from a $100M company to more than $40B in annual revenue. His experience spans legal,business development and general management functions, serving most recently as senior vice president and general manager.

Marc Stoll

Marc Stoll

Board Member

Marc Stoll is a finance executive with over 20 years of experience in the technology industry. He served as Vice President of Worldwide Sales Finance for Apple, where he was responsible for global sales channels accounting for over $125B in annual revenue. Marc was the Corporate Controller for CA Technologies, led technology buy-side equity research for Julius Baer Investment Management, held various finance positions at Compaq Computer and began his career as an electrical engineer.

Nikos Theodosopoulos

Nikos Theodosopoulos

Board Member

Nikos Theodosopoulos has 30 years of experience in the communications and finance industries. Nikos currently runs his own advisory and consulting practice, NT Advisors LLC. Previously, Nikos was a Managing Director at UBS Investment Research for 17 years where he served as Senior Research Analyst in the communications and networking industries, Global Technology Strategist and U.S. Technology Sector Head. Nikos began his career at Bell Laboratories and AT&T where he held roles in engineering, project management and sales.

Jayshree Ullal

Jayshree Ullal

President and Chief Executive Officer

As President and CEO of Arista Networks, Jayshree Ullal is responsible for building the company's business. Prior to Arista, Jayshree’s career at Cisco spanned more than 15 years. She led the direction of the modular Nexus and Catalyst Data Center Switching and Application/Virtualization services, where she oversaw about $15 billion of direct and indirect revenue.

Isabelle Bertin Bailly

Isabelle Bertin Bailly

Vice President, Global Human Resources

As Vice President, Global Human Resources, Isabelle Bertin-Bailly oversees the Global Human Resources Organization at Arista. Prior to Arista, she served as HR Leader for Cisco Systems’ Datacenter Switching and Security Technology Group, supporting a Global Workforce of 2,000 employees with a focus on employee engagement, talent, leadership development and organizational effectiveness. She brings over 20 years of experience in high technology from roles at Cisco Systems, Sun Microsystems, Kealia Inc., acquired by Sun Microsystems, Confluence Networks Inc., and Granite Systems, acquired by Cisco Systems.

Isabelle holds a B.S. in Sociology from Santa Clara University and a Graduate Certificate in Industrial/Organizational Psychology from Golden Gate University. She also has 2 degrees in Mathematics/Physics/Chemistry, and in Business Administration from Paris, France.

Ed Chapman

Ed Chapman

Vice President, Business Development and Alliances

As Vice President of Business Development and Alliances, Ed Chapman joins Arista with over 20 years of networking experience within the Data Center, Switching and Cloud markets. Prior to Arista, Ed held the position of Vice President of New Products and Cloud Strategy at Riverbed Technology and previously worked for Cisco Systems where he was Vice President of Product Management for the Nexus Data Center Switching and MDS Storage networking product lines. Ed has also developed strategic marketing alliances with EMC/VmWare, IBM, Hitachi Data Systems, Hewlett Packard, Microsoft, Verizon, AT&T, and Amazon Web Services.

Ed received his B.S. in Business Administration, Systems Analysis and Design from San Diego State University-California State University.

Mark Foss

Mark Foss

Vice President, Global Operations and Marketing

A 17 year networking industry veteran, Mark Foss joined Arista Networks in 2007. He is responsible for Arista’s global sales operations, field marketing and business planning. Previously, Mark was Vice President of International sales at Arista. Prior to that he was Director of Product Management at Cisco Systems, overseeing the Catalyst 4500 and 4900 product lines where he managed marketing and channel operations for the Catalyst 5000 and 6500.

Originally from Canada, Mark holds a Bachelor of Commerce from the University of Calgary.

Douglas Gourlay

Douglas Gourlay

Vice President, Systems Engineering and Technology Marketing

As Vice President of Systems Engineering, Douglas Gourlay is responsible for bringing modern products and solutions to our customers at Arista Networks. Doug is a key technology and marketing evangelist for Arista's Software Driven Cloud Networking. Prior to joining Arista, Doug was the Vice President of Data Center Marketing at Cisco Systems where he held key roles in sales, systems engineering, and product marketing. Doug has filed or holds more than twenty patents in networking technologies.

Prior to his work in the technology sector Doug served as a US Army Infantry Officer.

Jeffrey Hirschman

Jeffrey Hirschman

Vice President, Hardware Engineering

Jeffrey Hirschman has been designing hardware in high technology companies for over 20 years, including more than a decade in the networking industry. He was the founding hardware engineer at Arista, and leads the teams responsible for the design, and hardware development of the Arista platforms.Prior to Arista, he was an engineering manager in Cisco Systems GSBU (Gigabit Switching Business Unit) where he developed and managed key elements of the Catalyst 4000 roadmap. He joined Cisco through the acquisition of Granite Systems. Before Granite, Jeff designed ASICs for NeXT Computer and Firepower Systems and wrote software for Bell Labs.

Jeffrey has an M.S. in Computer Science from Stanford University.

Hugh Holbrook

Hugh Holbrook

Vice President, Software Engineering

Hugh Holbrook leads the development and testing of the platform and system software at Arista Networks. At Arista since 2005, he has led the development of many of the foundations of Arista's EOS. Before Arista, he worked at Cisco and played a key role in the software and hardware evolution of the Catalyst 4500. He is the inventor of Source-Specific Multicast (SSM), chaired the IETF working group that standardized it, and has authored multiple RFCs including the PIM-SM protocol spec. He holds eight patents in networking, systems, and hardware design.

Hugh has a B.S., M.S., and Ph.D. from Stanford University in Computer Science.

Christophe Metivier

Christophe Metivier

Vice President, Manufacturing and Platform Engineering

Christophe has a twenty-year track record of bringing to market successful products and innovations in the networking, optical and computer industries. Prior to this, Christophe was at Cisco for more than 15 years. He held several leadership roles as VP/GM of the Catalyst 4500 platforms, VP of Engineering for the 6500 System and General Manager of the Transceiver Module Group where he drove the 10G optics form factor transition. Christophe was one of the first 4 employees at Granite Systems in 1995. Previously he worked in the Computer Science Department at Stanford University on caching architectures and distributed systems.

Christophe holds a MSEE from the University of Toulouse in France.

Adam Sweeney

Adam Sweeney

Vice President, Software Engineering

As vice president of EOS engineering, Adam leads the development and testing of Arista's switching, routing, and management features for Arista's Extensible Operating System. Adam has 20+ years of extensive software and engineering development experience from leading companies including SGI, where he helped build the ground breaking XFS file system, and Cisco/Granite, where he played a lead role in the development of the Catalyst 4000 product line. Adam is an author on six U.S. patents.

Adam has a B.S. in Computer Science from Stanford University.

Marc Taxay

Marc Taxay

Vice President, General Counsel

Marc Taxay joined Arista in 2013 and serves as the company’s General Counsel. Marc is responsible for overseeing the legal affairs of Arista including commercial transactions, intellectual property, corporate governance, securities and compliance. Prior to joining Arista, Marc served as the Senior Vice President and General Counsel of MedeAnalytics, Inc., a healthcare analytics company, and the Assistant General Counsel of Coremetrics, Inc., a digital marketing company. Marc also worked as a partner at Cohen & Grigsby and a senior associate at Wilson Sonsini Goodrich & Rosati.

Marc has a B.A. and J.D. from The University of Michigan.