Meet The Team

Management Team

Joseph Hirsch

Joseph Hirsch

CEO

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Hagan Major

Hagan Major

Chief Operating Officer

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Richard Lin

Richard Lin

Chief Financial Officer

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Dave Buonasera

Dave Buonasera

Chief Technology Officer

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Matt Dearborn

Matt Dearborn

Chief Product Officer

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Sam Appelbaum

Sam Appelbaum

General Manager

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Jill Regular

Jill Regular

SVP, Ad Operations & Platform

Andrew Hirsch

Andrew Hirsch

VP, Client Services

Tyler Johnson

Tyler Johnson

Creative Director

The People Who Make Us Work

Wilson Acevedo

Wilson Acevedo

Director, Optimization & Analytics

 

Jose Avila

Jose Avila

Director, Mobile Strategy

Willa Brown

Willa Brown

Sr. Media Buyer, Display

Michael Carron

Michael Carron

Jr. Account Manager

Evan Chafetz

Evan Chafetz

Director, Sales

Nick Chapman

Nick Chapman

UK Country Director

Sara Cohen

Sara Cohen

Sr. Graphic Designer

Zoe Cooper

Zoe Cooper

Office Manager & Executive Assistant

 

Chris Danella

Chris Danella

IT Engineer

 

Rogerio Echeverria

Rogerio Echeverria

Brazil Country Manager

 

Elizabeth Elliot

Elizabeth Elliot

Head of Finance & Operations

 

Joann Fung

Joann Fung

Graphic Designer

 

Mariel Gold

Mariel Gold

Sr. Account Strategist

 

David Impink

David Impink

Controller

 

Darnell Jordan

Darnell Jordan

Graphic Designer

 

Jason Kim

Jason Kim

VP, Strategic Operations

 

Morgan Kist

Morgan Kist

Product Development

 

Amy MacDonald

Amy MacDonald

Sr. Human Resources Manager

 

Jennifer Mahajan

Jennifer Mahajan

Director, Sales

 

Cullen McAndrews

Cullen McAndrews

Technical Ad Ops Manager

 

Sean Metcalfe

Sean Metcalfe

Account Strategist

 

Lauren Ogransky

Lauren Ogransky

Account Strategist, Video

Tim O'Keeffe

Tim O'Keeffe

Director, Sales

 

Sapan Patel

Sapan Patel

Sr. Ad Operations Manager

 

John Pearce

John Pearce

Social Media Manager

Denise Reina

Denise Reina

Social Media Manager

 

Olivia Rosen

Olivia Rosen

Sr. Business Development Manager

 

Kirsten Samuelson

Kirsten Samuelson

Director, Social Media

 

Mikaela Santiago

Mikaela Santiago

Account Strategist

Melek Sherman

Melek Sherman

Staff Accountant

 

Melissa Taic

Melissa Taic

Director, Account Strategy

Daniella Waknin

Daniella Waknin

Sr. Marketing Manager

 

Jeremy Wallace

Jeremy Wallace

Sr. Director, Platform Sales

 

Ben Wilson

Ben Wilson

Director, Demand Production

 

Sun Ha Woo

Sun Ha Woo

Multimedia Designer

 

Erica Yard

Erica Yard

Account Strategist, Video

Lauren Yeh

Lauren Yeh

Marketing Analyst

 

Joseph Hirsch

  • As YellowHammer’s CEO, Joe manages corporate partnerships with key SSPs, data providers, and advertisers. Maintaining client objectives is Joe’s top priority—which involves making sure YellowHammer has the right tools to meet complex goals at scale.

    He works closely with the development team to drive the creation of advanced media-buying and analytics tools for the company’s expanding client base.

     A self-styled “ad server cowboy,” Joe has been working in the online ad space for the last decade and brings a vast, “hands-on” experience with many major ad platforms. He was one of the first users of Right Media’s YieldManager and has also worked extensively with AdvertPro, OpenX, Zedo, Accipiter, AppNexus, and DrivePM, among others.

  • Hagan Major

  • Hagan Major is YellowHammer’s co-founder, Chief Operating Officer, and President where he is responsible for corporate strategy, partnerships, and internal operations.

    A born entrepreneur, Hagan quite literally grew up with the online advertising industry. While still in high school, he started ClickHype, an ad network that eventually served over 100 million ad impressions per day. After he sold ClickHype, Hagan co-founded Linkbucks.com, an advertising service for users of social networks. As CEO of Linkbucks.com, he grew the site from 500 to over 30 million daily visitors, topping the Alexa Internet Traffic Rankings.

    Hagan has been a featured speaker at the industry conference Uncubed, the Appnexus Summit, and the U.S. Chamber of Commerce.

  • Richard Lin

  • Richard Lin has served as Chief Financial Officer of YellowHammer Media Group since May 2013. He is responsible for the financial strategy and reporting across the company’s global divisions, as well as corporate M&A.

    Before YellowHammer, Rich spent several years in new media and telecommunications investment banking, including Wedbush Securities, Bank of America, and Deutsche Bank. During his banking career, he worked closely with management teams of both privately-held and publicly-traded companies to successfully raise equity and debt capital and execute M&A transactions.

    Rich holds an MBA from the Stanford Graduate School of Business and an AB in History and Economics from Duke University, graduating Magna Cum Laude and Phi Beta Kappa.

  • David Buonasera

  • Dave Buonasera is YellowHammer’s Chief Technology Officer, responsible for building out the YellowHammer tech team and managing their globally-distributed infrastructure. Previously, Dave led the Optimization and Analytics team at AppNexus where he was one of their first employees and spearheaded the creation of data processing systems and optimization algorithms.

    Before jumping into adtech, Dave held engineering and trading analyst roles within finance, including Goldman Sachs and Citi Alternative Investments.

    Dave holds a computer science degree from the University of Pennsylvania.

  • Matt Dearborn

  • Matt Dearborn is YellowHammer’s Chief Product Officer, where he is responsible for the strategy, design, and execution of all YellowHammer products.

    Prior to joining YellowHammer, Matt was the co-founder and CEO of PubSquared, an ad server and analytics platform that provided publishers with tools to compete in the rapidly-changing ad tech landscape.

    Before founding PubSquared, Matt played a key role at a number of technology start-ups, including AppNexus, where he was one of the first members of the new business team. There, he introduced traditional media and ad tech companies to the real-time ad serving ecosystem.

    Matt holds a BA from Duke University.

  • Sam Appelbaum

  • As General Manager, Sam is tasked with driving YellowHammer’s vision forward, helping to develop strategy across YellowHammer’s various Sales and Business Development efforts.

    Sam has worked in ad-tech his entire career, beginning at Epic Advertising where he rose to director level role before joining YellowHammer as their 5th employee. Having worked with hundreds of different clients over his nine years in digital advertising, Sam and his team offer clients expertise across all forms of digital media and creative strategy.

    Sam was named to the AdMonsters 2018 Power List for his innovative and client oriented-leadership and for revolutionizing the digital media world through advertising, marketing and monetization efforts.