• George A. Riedel

    George A. Riedel

    Chairman of the Board and Chief Executive Officer

    George Riedel joined Cloudmark as Chief Executive Officer to drive the company to its next phase of growth and meet demand for innovative network security solutions. In addition to his role at Cloudmark, George is on several boards including the Chairman of the Board of Montreal-based Accedian Networks, a director at PeerApp in Boston and a director at Tessera Technologies in San Jose.

    In March 2006, he joined Nortel Networks as part of the turnaround team as the CSO in Toronto. His role changed in 2009 to lead the sale and restructuring of various business units through a series of transactions generating over $4B. In 2010, he was promoted to President of Business Units and CSO as he took leadership of the effort to monetize the remaining 6500 patents and applications patents as well as manage the P&L for several business units that were held for sale. The 2011 patent sale led to an unprecedented transaction of $4.5B to a consortium of Apple, Ericsson, RIM, Microsoft and EMC.

    Prior to joining Nortel, he was VP of Strategy and M&A for Juniper Networks in Sunnyvale, CA from 2003-2006, leading a series of acquisitions that doubled the size of the company over two years.

    Previously, he was a Director at McKinsey & Company where he spent 15 years serving clients in the telecom and technology sectors in Asia and North America on a range of strategy and growth issues.

    He has a BS with Distinction in Mechanical Engineering from The University of Virginia and an MBA from Harvard University.

  • Leon Rishniw

    Leon Rishniw

    Senior Vice President, Engineering

    Leon Rishniw is a seasoned engineering executive who has spent more than 15 years building and managing software development, operations, information technology and engineering support services organizations in high technology companies. At Cloudmark, Leon holds responsibility for the Product Development, Quality Assurance, Customer Support and Operations teams.

    Leon's career has spanned the entire spectrum of the engineering development life-cycle, both internationally and domestically, and across multiple industries including messaging systems, digital media systems, medical imaging and avionics. Prior to joining Cloudmark, Leon was Director of Engineering with Sony Corporation where he managed international development efforts between media and hardware companies within Sony. Prior to Sony, Leon served as Vice President of Engineering at Liquid Audio, a digital music services company where he managed the development of software products and services.

    Leon holds five patents in security and digital media processing with the US patent office.

  • Olivier Lemarié

    Olivier Lemarié

    Vice President, Gateway Technology

    Olivier "Mario" Lemarié brings to Cloudmark over 16 years of executive management and network infrastructure development experience to his role as Vice President of Gateway Technology. Mario joined Cloudmark as part of the acquisition of Bizanga, Ltd., the leading message processing platform, where he was co-founder and Chief Technology Officer.

    As Chief Technology Officer for Bizanga, Mario was responsible for the development and direction of Bizanga's Intelligent Message Processor (IMP) platform which provided scalable and full-featured email message processing and security for some of the largest messaging operators in the world. Prior to founding Bizanga, Mario was co-founder of Internet-Way, one of France's first and most successful internet service providers, and played a prominent role in the design and deployment of the technical infrastructure and in the development of value-added services. Internet-Way was subsequently acquired by UUNET, where Mario served as Chief Technologist for UUNET Europe, Middle East, and Asia and was tasked with defining UUNET Europe's technological direction.

    Always looking for better ways to exploit technologies, Mario founded Overnetworks in 2000 to develop a new scalable technology to intelligently route data on the Internet. Earlier in his career, Mario consulted to several start-up organizations helping them define their business models and technological direction.

  • Paul Buttle

    Paul Buttle

    Senior Vice President, Worldwide Sales

    As Senior Vice President of Worldwide Sales at Cloudmark, Paul Buttle is responsible for leading the strategic direction and execution of global sales. During his tenure, he has successfully increased new business, lead new sales initiatives, opened new channels and executed customer relationships outside of the Americas. He also previously served as Cloudmark’s Vice President of International Sales and Global Services, as well as Vice President of EMEA Sales.

    Paul has over 16 years of International sales experience selling complex software solutions with robust value propositions to mobile network operators, telecommunications organizations, internet service providers, media and cable operators across EMEA and Asia.

    Prior to joining Cloudmark in 2011, Paul achieved success working in several senior sales management positions at Bytemobile, British Telecom and Motorola, as well as a number of software startups. Paul holds a BA Hons Marketing.

  • Mike Reading

    Mike Reading

    Vice President, Worldwide Technology Services

    As Vice President of Worldwide Technology Services, Mike Reading leads the field technical teams that are responsible for customer presales, professional services and technical account management.

    Mike has over 15 years of experience delivering messaging and messaging security solutions to service providers, mobile operators and fortune 500 companies. While at Cloudmark, Mike was part of the initial team of solutions architects that lead Cloudmark’s evolution from a company primarily focused on consumer and desktop applications to a company positioned to solve messaging security problems for some of the world’s largest service providers. Mike has led the development of the company’s anti-abuse policy best practices and sender reputation strategies, and helped Cloudmark establish and maintain market leadership across the Americas and around the world.

    Prior to Cloudmark, Mike was at Openwave (Software.com) where he was responsible for bringing carrier-scale ISP and mobile messaging solutions to its worldwide customers. He helped lead the strategy to expand Openwave’s offerings into messaging anti-abuse solutions, which lead to the development of several anti-abuse products and an eventual partnership between Openwave and Cloudmark.

    Mike holds a master’s degree in mechanical and computer-aided engineering from Cornell University. Mike has been part of M3AAWG since its inception and is currently on the M3AAWG board.

  • Debra Kladis

    Debra Kladis

    Vice President, Sales Operations and Treasurer

    In the role of Vice President of Sales Operations and Treasurer for Cloudmark, Debra Kladis leads Cloudmark’s treasury function and governs worldwide sales enablement, CRM development initiatives and compliance.

    Debra has over 20 years of broad experience in financial management positions across a variety of industries including telecommunications, energy, and consumer products where she was instrumental in re-engineering and driving increases in top line growth, profitability and sales productivity.

    Prior to joining Cloudmark in 2012, Debra held several executive management positions at Movius Corporation including Interim CFO, Vice President of Finance, Vice President of Sales Operations, and Director of Business Systems and Process. Debra also served in key financial and strategic planning positions at Square D Company, James River Corporation (acquired by Georgia Pacific) and Xerox Corporation. Debra holds a BA in Finance from Siena College.

  • Marina Hardof

    Marina Hardof

    Vice President, Finance and Accounting

    As Vice President of Finance and Accounting at Cloudmark, Marina Hardof leads Cloudmark’s financial planning and partnering functions, as well as all accounting and tax functions.

    Leveraging over 15 years of experience in financial operations, Marina joined Cloudmark in 2013 where she was a key contributor in successfully transforming Cloudmark’s finance and accounting groups into a high performing team.

    Prior to joining Cloudmark, Marina was a Director of Finance and Assistant Controller at Unwired Planet (Openwave Systems). Prior to Unwired Planet, Marina spent 10 years with Ernst and Young and Deloitte servicing a variety of clients in the technology industry.

    Marina holds a BA in Economics and Accounting from Hebrew University of Jerusalem and an MBA from the Haas School of Business, Berkeley University, and is a licensed CPA in California, Colorado and Israel.

  • Patrick Wong

    Patrick Wong

    Vice President, General Counsel

    Patrick Wong has served as Vice President and General Counsel for Cloudmark since 2014 and oversees worldwide legal matters including all intellectual property, corporate, litigation and licensing activities.

    Patrick has over 18 years of legal experience in both the law firm and in-house legal environments. From 2006 to 2013, he served as Legal Director, Corporate at Dolby Laboratories, Inc., where he was the lead attorney for Dolby’s product sales group and also provided legal support in several mergers and acquisitions activities. Prior to Dolby, Patrick was the Associate General Counsel from 2001 to 2005 at Digital Impact, a public email marketing company.

    Patrick is a certified public accountant (inactive status), and holds a BS in Business Administration from the Haas School of Business at the University of California, Berkeley, and a J.D. from Boalt Hall at the University of California, Berkeley.

  • Matt Grant

    Matt Grant

    Vice President, Global Marketing and Communications

    Matt Grant serves as Vice President of Global Marketing and Communications for Cloudmark. In this role, he is responsible for the planning, development and implementation of Cloudmark’s marketing strategies, communications and public relations activities.

    Matt joined Cloudmark in 2012, serving as Head of Marketing where he elevated the company’s profile and expanded the brand into new markets, taking the company’s marketplace visibility from nearly zero to owning the leading industry share-of-voice amongst the competition.

    Prior to Cloudmark, Matt was Senior Director of Media Strategy at Schwartz MSL, where he was responsible for the company’s largest enterprise security accounts, leading overall media direction and brand visibility. Prior to Schwartz MSL, Matt worked as a producer and reporter at several television news stations, including KTTV Fox Los Angeles, KTVU San Francisco, as well as KYMA NBC in Arizona where he helped keep the station ranked number one amongst competitors in the market.

    Matt has received several accolades for his work, including a prestigious Bulldog Award for Excellence in Media Relations and Publicity. He graduated Magna Cum Laude from Loyola Marymount University with a BS in Communications.

  • Sonja Shevelyov

    Sonja Shevelyov

    Vice President, Human Resources

    Sonja Shevelyov serves as HR Director for Cloudmark. In this role she is responsible for talent acquisition, organizational development, benefits and compensation for Cloudmark’s global workforce located in 13 countries.

    Prior to joining Cloudmark, Sonja headed human resources for Ooyala, where she scaled the company from 50 to 250 global employees and oversaw the HR programs leading to the company being named A Silicon Valley Business Journal’s Best Places to Work Winner in 2010, 2011 and 2012. Prior to Ooyala, she led the human resources function for California Ear Institute and its affiliated non-profit Let Them Hear Foundation.

    Sonja is PHR certified and holds a BA in Theatre Arts from San Francisco State University and MBA from the Leavey School of Business at Santa Clara University.

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