Joe Zawadzki
Chief Executive Officer

Joe Zawadzki

MediaMath CEO Joe Zawadzki is a respected pioneer in the online marketing industry, known especially for establishing the demand-side platform sector. With his deep experience in audience targeting and optimization, ad networks and exchanges, and real-time bidding Joe is regularly invited to speak at industry conferences, roundtables and major events.

After a decade representing buyers at top-tier agencies and Fortune 500 companies, Joe Zawadzki saw the need to reshape the online marketing landscape by integrating technology, data, analytics, and marketing best practices into a single media platform. He founded MediaMath in 2007, launching a technological revolution with the first demand side platform (DSP) and today, the MediaMath Marketing Operating System, TerminalOne, powers the marketing practice of more than 3,500 brands.

Previously, Joe was founder, president and chairman of Poindexter Systems / [x+1], incubated Right Media, and as managing member of Occam’s Razor, shaped AOL’s yield management and DoubleClick’s buy-side optimization strategy.

His early career was spent as an investment banker, where he developed his expertise in quantitative analysis and market dynamics, and he remains an active New York technology investor whose portfolio includes AppNexus, AdSafe, 33Across, C3Metrics, Hashable, Accordant and Spruce Media.

Joe holds several patents in the area of online methods for dynamic segmentation and content presentation. He is a graduate of Harvard University and was a Teaching Fellow in cosmology, set theory and the history of science. He lives in New York City with his wife, Daria, and their children Dune and Jack, born on the summer and winter solstices respectively.

Ari Buchalter
Chief Operating Officer

Ari Buchalter

Ari oversees both MediaMath's Product team, focused on designing and delivering best-in-class product solutions to the market, as well as the Business Operations group that uses MediaMath’s technology to deliver exceptional results to clients. Ari brings a unique combination of business leadership, strategic vision, deep and practical marketing knowledge, and quantitative expertise. 



Previously, Ari was a Senior Partner at leading interactive agency Rosetta and head of their Digital Media & Technology practice, leading major business strategy engagements and marketing program implementations at Fortune 500 clients in the Telecom, Media, and Technology sectors. Prior to that, he was an Associate Principal at McKinsey & Company in their Global Media & Entertainment Practice, focusing primarily on Marketing Strategy, Customer Analytics, and the design of Marketing Acquisition and Retention programs for leading global media companies. Ari was also a founding member of McKinsey’s Innovation Practice, helping companies tackle the challenges of designing, developing, and commercializing product and process innovations at scale.



Ari’s passion for big ideas and all things analytic (including the design of MediaMath’s proprietary Brain optimization algorithm) comes from his first career in Theoretical Astrophysics. Ari was a postdoctoral Fellow in Theoretical Astrophysics at Caltech, having received a PhD in Astrophysics from Columbia, and a Bachelor of Science in Physics from Stanford. While at Caltech building quantitative models of the origin and expansion of the Universe, Ari also applied those modeling skills to Finance, founding and managing a small quantitative hedge fund based on proprietary algorithmic derivatives trading strategies, before finally making the leap from the ivory tower.



When not putting his talents to use around a conference room table, you may find Ari applying them at a poker table, especially during his annual pilgrimage to the World Series of Poker. But what he enjoys most is spending time with his wife Ellie and two genius-in-the-making sons Benjamin and Isaac.

Roland Cozzolino
Chief Technology Officer

Roland Cozzolino

Roland oversees the architecture and development for MediaMath's TerminalOne Marketing Operating System. With over a decade of experience in enterprise level software design, end-user windows applications, and web-based systems, he brings a tremendous depth of technical knowledge to the MediaMath team.

Roland's initial foray into the business world started in the Marketing Research sector, where he was surprised to find use for a degree in mathematics (BA Washington University, Saint Louis). This stint was short-lived, as he realized he wanted to write code, something he had done since childhood on an Apple II.

During the internet boom, he ran engineering for Tempest Software, building low-level messaging systems, and for WhenU as VP of Engineering, where he developed the first behavioral targeting and content contextualization engine. For the past several years he ran his own consulting and development firm, working with a large list of Fortune 500 clients, developing code ranging from quantitative algorithms for financial trading, secure instant messaging solutions, compliance systems, digital rights management, to web applications too numerous to name. He is the rare technologist who understands the end to which code is the means.

His passion of technology and art exposed him to over 25 programming languages, 3D modeling, video post-production, and sound engineering. He even found the opportunity to compose a score for a nationally televised commercial. It's safe to say he strives to continuously learn anything he can and add a layer of creativity not often found within the development community.

When time permits he still likes to trade equities, build furniture and play music- and even fire up a chainsaw now and again. Most importantly, he always makes time for his wife and three boys. As he sees it, he's just two skaters away from a hockey team.

Tom Craig
Chief Information Officer

Tom Craig

Tom Craig, Chief Information Officer, oversees the development and operations of the MediaMath's TerminalOne Marketing Operating System, a global technology platform supported by onshore and offshore staff, data centers on three continents and billions of transactions a day.

Tom oversees MediaMath’s information governance and privacy strategy to ensure compliance with industry and government regulations. Prior to joining MediaMath, Tom created and led the Global Marketing Solutions organization at AOL responsible for multiple consumer marketing platforms, the Corporate Information Strategy, and AOL Data Product suite.

Tom was also instrumental in the development of AOL’s privacy policy in support of consumer protection and expansion of online marketing capabilities. Preceding his time at AOL, Tom spent 10 years in the telecommunications industry building Consumer Marketing and analytic platforms. Tom currently sits on the IAB Public Policy Council and IAB Data Council. Tom earned his BBA in Computer Information Systems from James Madison University.

Jeannie Mun
Chief Financial Officer

Jeannie Mun

As the CFO, Jeannie Mun manages MediaMath’s global financial operations as well as investor relations. Jeannie establishes accounting and administrative best practices within the company and is focused on driving operational improvements to meet the company's strategic business objectives. Jeannie brings extensive financial management, capital raising and M&A experience in the media technology sector to the company.

Prior to MediaMath, she oversaw finance, operations and strategy for Operative, a leading revenue operations and workflow platform for publishers. As Operative's VP of Finance & Strategy, she led the company through the successful implementation and ongoing management of operational infrastructure and KPI metrics. Jeannie also specialized in mergers & acquisitions for The Jordan, Edmiston Group (JEGI), an investment bank for the media and technology industry, where she executed transactions in the online media sector and managed investments for the firm's venture capital fund. Prior to JEGI, she was the Director of Strategy & Operations at Atlantic Media Group, publisher of the Atlantic Monthly and National Journal, and a consultant for Deloitte Consulting. Collectively, she possesses more than a decade of financial planning and analysis experience leading many companies to success.

Jeannie earned an MBA from Harvard Business School and a BA in Economics with Honors from the University of California at Los Angeles.

Erich Wasserman
Co-Founder, Global Chief Revenue Officer

Erich Wasserman

As Chief Revenue Officer, Erich leads MediaMath's sales and account management business. Erich was part of the founding team at MediaMath, and created the company’s first sales and account management practices servicing what would be the world’s first adopters of programmatic technology. In 2011, Erich moved to London to establish MediaMath’s business outside of the US. In this role, Erich grew and lead a team which focused on business expansion in EMEA and APAC. 

Erich works with new and existing clients, as well as media and data suppliers, to create ever more scalable technology solutions. Alongside his business accolades, Erich held the position of executive director for the Foundation for Individual Rights in Education, before co-founding Hope for Vision, an organisation devoted to the treatment and cure of blinding eye diseases. Following this in 2005, as the executive director of media solutions at [x+1], he was part of the team that launched the fastest-growing business unit within the firm.

Erich earned a bachelors degree in political philosophy and classical piano from the University of Virginia and holds joint British and American citizenship.

Michael Lamb
Chief Commercial Officer

Michael Lamb

Michael Lamb, Chief Commercial Officer, leads corporate strategy and development for MediaMath and spearheads initiatives for global expansion and product commercialization. Michael works closely with the sales, product and operations teams to solidify MediaMath’s position as a leader in the industry while identifying and executing upon growth opportunities.

Michael brings nearly 15 years of experience in the digital marketing and media space, fueling innovative strategies for Fortune 500 companies.  Prior to MediaMath, Lamb spent 10 years with McKinsey & Company, the global management consultant firm, where he worked with Fortune 500 media, telecom and entertainment companies to advise and implement digital marketing strategies. 

Among his accomplishments since his start at McKinsey in 2003, Michael launched paid digital products for leading newspapers in the U.S., South America and Asia.  He also designed new consumer price architectures for two major cable operators and accelerated online acquisition for a large magazine publisher. Michael guided three rounds of price changes over 5 years for a US wireless provider, shaped the corporate strategy for a major MSO, and reset the advertising pricing approach for a major consumer media company.  Michael also strengthening the sponsorship sales approach for a U.S. professional sports league, built multi-product prospecting capabilities for one of the 5 largest US direct mail marketers and worked with six major sports franchises to apply an analytic approach to ticket pricing.

Michael spent three years in the online advertising industry, prior to McKinsey, as a co-founder of Poindexter Systems (now [X+1]), alongside Zawadzki.

Michael holds an M.A. in Mathematics, with distinction, from the University of Oxford and a B.A. in Applied Mathematics, cum laude, from Harvard University.  He lives in Brooklyn with his wife and three kids and is sure to be the worst poker player on MediaMath’s Executive Team.

Greg Williams
Co-Founder, SVP OPEN Partnerships

Greg Williams

Greg leads MediaMath’s business development efforts globally. In this role, Greg creates business and technology relationships with partners and oversees MediaMath’s OPEN Partnership program. Having focused his career at the intersection of marketing and technology, Greg is an expert in automation and large-scale technology offerings.  Leveraging his unique blend of business and technical skills, Greg works with clients and with data and inventory partners across media channels to help them build their businesses on MediaMath’s TerminalOne platform.

Prior to his move to London, Greg managed all internal and external reporting and analyses from MediaMath’s New York headquarters. In this role, Greg spearheaded the design, development, and management of MediaMath’s analytics platform.  Before co-founding MediaMath, Greg led advertiser media strategy at [x+1], working with global brands on website and media optimisation.  In that role, Greg also worked with a team to establish a new media division that quickly outpaced its established parent company. Before [x+1], Greg’s background was in econometric data modeling, marketing strategy, and integration of marketing platforms for Fortune 500 companies at Nielsen and Accenture.

Greg holds a BS in Industrial Engineering from Texas A&M University and an MBA from Fordham University with concentrations in accounting and finance.

Peter Phelan
Chief People Officer

Peter Phelan

Peter is accountable for ensuring the tight linkage between business strategy and human capital strategy. MediaMath's success has been largely attributable to our unique inventive culture being populated with unusually bright, dedicated and fun people. To help protect and promote that culture we've codified a set of MathValues that we use as a key input to all human capital decisions. A big part of Peter's job is to ensure that behaviors that embody Scalable Innovation, Performance, Accountability, Collaboration and Empowerment are recognized and celebrated.
 
MediaMath has achieved a great many industry firsts in the rapidly evolving ad tech space and intends to continue to innovate. For the company to remain nimble, the human capital infrastructure has to be light and flexible – always facilitating clear internal communication and employee career mobility and never getting in the way. The background that has prepared Peter to provide innovative human capital solutions includes bachelor's and master's degrees in Business/Management from University College Dublin, senior HR roles within Bloomberg, Publicis Groupe and WPP, and an ability to articulate a clear people management vision that has led to dozens of publications (e.g. HR Magazine, Washington Post, Wealth Manager).
 
Peter and his wife, Andie, enjoy raising their two "city kids" (a son and daughter) born and raised right here in Manhattan within a couple of dozen blocks of the office. In his spare time Peter enjoys comedy writing and performing stand-up.

Dave Reed
SVP Strategic Solutions

Dave Reed

Dave oversees custom client solutions, platform professional services and client & partner integrations at MediaMath. He has over 10 years of experience in online marketing, e-commerce and software development, building out technical and marketing solutions for Fortune 500 marketers. Dave is a frequent speaker at online marketing events.

Dave oversees the Client Services teams responsible for evangelizing MediaMath’s technology, strategic partner integrations and custom solutions built on MediaMath’s TerminalOne Marketing Operating System. Prior to joining MediaMath, Dave was founder and president of Xonos, Inc., a software development firm specializing in eCommerce and web applications. He architected and developed systems and processes to optimize marketing and business operations for clients such as Motorola, U.S.Department of Veterans Affairs, AT&T and the NFL. He has developed platforms for display marketing, product customization, just in time production, business intelligence, and marketing databases while building and managing onshore and offshore development teams.

Dave holds a B.A. from Yale University.

Dan Rosenberg
SVP Business & Corporate Development

Dan Rosenberg

Dan oversees strategic partnerships and corporate development activities for MediaMath. He brings over 15 years of experience in digital media deal-making from HotJobs (pre-IPO and sale to Yahoo!), Virgin Mobile (pre-IPO and sale to Sprint) and Rave Wireless (mobile software backed by Bain Capital Ventures, Sigma Partners, RRE Ventures) and in growth investments from Maveron (venture capital investor in eBay, Shutterfly, Drugstore.com, Capella University, Knowledge Networks, Groupon, SAY Media and Zulilly), Jericho Capital (tech-media-telecom hedge fund) and ASIMCO (Beijing-based private equity firm acquired by Bain Capital).

Dan's team is focused on bringing the best of the ad tech ecosystem to MediaMath clients in a simple, seamless way and helping partners bring their solutions to market quickly and at scale. Dan also oversees MediaMath's corporate development activities including M&A, joint ventures and capital markets.

Dan is a graduate of Harvard College and Harvard Business School.

Rachel Meranus
SVP, Marketing

Rachel Meranus

As SVP of Marketing, Rachel oversees MediaMath's global marketing and communications strategies, with a focus on building brand visilibity and driving demand and revenue from the world's largest advertisers and their media, data and technology partners. Her team is responsible for the development, execution and analysis of integrated marketing campaigns; demand generation, content marketing, events, social media, branding, and public & analyst relations. 

Rachel brings more than 18 years of experience in marketing and PR, with expertise in developing overall global marketing strategies for small, medium and large B-to-B brands. Prior to joining MediaMath, Rachel spent 11 years at PR Newswire, most recently as VP of Marketing & Communications, where she oversaw its award-winning rebranding campaign and transformed its marketing department into a revenue-generating function through integrated content marketing campaigns and the strategic alignment of marketing with the sales organization. In 2012, Rachel was recognized as an innovitave content marketing professional when the Content Marketing Institute named her a  "Content Marketer of the Year" finalist.

Rachel was born and raised on the Upper West Side of Manhattan, but currently resides in Montclair, NJ with her husband, son and daughter.  Rachel graduated Union College with a B.A. in History.

Brian Miller
General Counsel

Brian Miller

Brian is currently General Counsel of MediaMath, the leading provider of digital media trading technology and services, and inventor of the demand side platform (DSP). Brian also serves as Chairman of the Board and Pro Bono General Counsel for MOUSE, a New York-based non-profit focused on youth development through technology. Before that, he was General Counsel & Chief Compliance Officer of EducationDynamics, higher education’s leading marketing information and technology services company dedicated to helping institutions find, enroll and retain students.

At EducationDynamics, Brian oversaw their legal affairs and regulatory compliance program and advised the company on corporate and strategic matters. 
Prior to joining EducationDynamics, Brian was Senior Corporate Counsel at LivePerson, a NASDAQ-listed technology company that is a leading provider of online engagement solutions. 
 Earlier in his career, Brian was a corporate attorney at Gunderson Dettmer, one of the country's top technology law firms, where his practice focused on high-growth and later-stage software, hardware and Internet companies. Brian also practiced at Debevoise & Plimpton, a leading global law firm, where he focused on corporate and strategic transactions.

Brian received his B.A. in Philosophy from Haverford College and his J.D. from Columbia Law School. Brian also studied at Pembroke College in Oxford University and was a member of the Pembroke College Boat Club. He is a member of the NYAC Triathlon Club and the Haverford Old Lloydians Club.  

David Gavazzi
SVP, Product Management, TerminalOne & UI/UX

David Gavazzi

David oversees product management for the campaign execution portion of MediaMath's TerminalOne Marketing Operating System. He has spent the last 15 years designing and developing software, marketing and branding solutions for the tech, CPG, retail, government and not-for-profit industries.
 
David’s Product team drives the discovery, design, development and delivery of T1’s front & back end functionality, including cross-channel campaign management, decisioning & optimization, reporting, ad serving, private marketplace, supply and third-party data provider integrations. In addition, he leads UI/UX design, interaction and methodology across all MediaMath product lines. Before joining MediaMath in 2008, David was a Principal and Lead Designer at Xonos, Inc., a software development firm specializing in eCommerce and web applications. He designed and implemented interfaces for clients such as Motorola, AT&T, the National Football League and McGarryBowen. Prior to Xonos, Dave was a freelance graphic designer working with clients such as Reuters, Pfizer, Altoids and New York University.
 
David lives in Brooklyn and loves to make & consume food & drink, critique font usage, and unflaggingly support Buffalo sports teams no matter how painful it can sometimes be. He holds a B.S. in Sociology from Ithaca College and a M.S. in Counselor Education from Canisius College in Buffalo, NY. And yes, his middle name really is Cosmo.

Jenna (Mariano) Griffith
SVP, Head of Revenue Operations

Jenna (Mariano) Griffith

As SVP, Head of Revenue Operations, Jenna is responsible for the revenue growth and servicing of TerminalOne clients globally. An expert on demand-side platforms, digital marketing strategy and program design, and high-level campaign optimization techniques.

Jenna earned a BA degree in Economics from Princeton University and then began a career as an analyst at J.P. Morgan Chase on both the Credit and Rates and the Municipal Bond Desks. Leveraging this knowledge of trading, Jenna went on to hold a number of positions at American Express, including CRM specialist within the Online Customer Marketing team as well as leading the Online Advertising Strategy & Operations group, out of which, American Express began selling advertising on Amex.com. In 2008, joined MediaMath as employee number 8, and has since focused on ensuring clients drive the most return on their media investments via TerminalOne.

Eoin Townsend
Chief Strategy Officer (Advisor)

Eoin Townsend

For the last 15 years Eoin has been a leader in developing and executing visionary business strategies resulting in multiple success stories including DoubleClick, ChannelAdvisor, Epsilon, and DoubleVerify.

He started his online career as an early employee of FloNetwork that became the leading email marketing platform with brands and publishers.  He supported both the strategic investment by CNET Networks and the eventual sale and integration with DoubleClick.

As a member of the DoubleClick team, Eoin managed Asia Operations and Strategy in Hong Kong, was promoted to the Regional Director of Japan and led international product in London, England. He was a critical member of the team that sold the DoubleClick marketing automation divisions and helped manage their integrations. After the Epsilon acquisition of DoubleClick marketing, he managed their strategic partnership team and helped form their online marketing division.

Most recently, Eoin managed strategy and business development for DoubleVerify, where he was part of the team that successfully secured the series C funding of 33 million dollars from JMI and IVP, and created its partnership team and business development organization.

 
Management:
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