Advisors & Investors


  • Steffan K. Peyer

    Board Member

    Steffan first joined Summit Partners as an Associate in 2007. Today, he focuses on the technology sector in Europe. He is an American and Swiss national and speaks German and English. His investment and board experience includes 360T Group, Akeneo, Elatec, Market Logic, PatSnap, Red Points, RELEX Solutions and Signavio.

    Prior to rejoining Summit in 2013, Steffan was a member of the management team of Turbulenz Limited. Before that, he worked for UBS Investment Bank.

    Steffan holds a BS in finance and accounting, magna cum laude, from Boston College.

  • Reza Malekzadeh

    Reza Malekzadeh

    Board Member

    Reza is a general partner at Partech Ventures, primarily focused on the infrastructure, datacenter and enterprise markets. He has built his career and reputation by joining early stage ventures and leading them to a successful exits as well as by working in large groups to help their transition to new business models.

    Reza started his career as employee #10 at VMware, and left the team to create his company, Twingo Systems, which was acquired by Cisco Systems in 2004. Then, Reza joined Akimbi Systems which was acquired by VMware in 2006, where Reza then served as Head of Products & Marketing. Eager to reunite with early stage companies, Reza joined Nimbula, a provider of private cloud infrastructure management software, as VP of Sales and Marketing. Nimbula was successfully acquired by Oracle in 2013.

    Between his time at Nimbula and Partech, Reza was head of Marketing at Cumulus Networks, a company that designs and sells Linux operating systems for networking hardware.

  • Stephan Dietrich

    Stephan Dietrich

    Board Member

    Stephan Dietrich is a serial entrepreneur and investor with 25 years of experience in enterprise software and a strong operational track record of growing and scaling start-ups all the way to successful exits.

    In 2013, he sold his last brainchild Neolane to Adobe for $600M, a 10x multiple on revenue. He stayed at Adobe until early 2018 as a GM of his business and grew it at a 40% CAGR over those 4 years.

    Stephan is now Executive in Residence for General Catalyst, a tier 1 US Venture Firm with over $6Bn under management. He brings his skill set and experience to high growth SaaS companies as an advisor, independent director and investor. He specializes in helping European enterprise software firms land, scale and successfully exit in the USA.

  • Yoav Kutner

    Yoav Kutner

    Board Member

    Yoav is the Co-Founder and CTO of Oro Inc, the open source CRM made for e-commerce.

    Prior to founding Oro, he was the CTO and Co-Founder of Magento, where he led product and technology development for all Magento offerings from inception until after it’s acquisition by eBay, Inc. in 2011.

    Legends says he used to play in metal band, and that he used to have an inline skating park in his living room. No one ever got the chance to verify.

  • Roy Rubin

    Roy Rubin


    Roy is the co-founder and former CEO of Magento, the world leader in e-commerce platforms.

    In August, 2011, Magento was acquired by eBay, Inc., where Roy became a vice president. He continued to lead the Magento business until his departure from eBay in May, 2014.