The AdMonsters Team
Bowen Dwelle: Founder & CEO
Mr. Dwelle founded AdMonsters in 1999 as the only professional association exclusively dedicated to online advertising operations and technology. Under Mr. Dwelle's leadership, AdMonsters has grown from an informal group of early pioneers in online ad operations to a global network of senior leaders in the field.
From 1998 until late 2001, Mr. Dwelle served as Senior Director for Technology Strategy and Director of Advertising Technology for Terra-Lycos, following Terra's acquisition of The Lycos Network. From 1996 to 1998, Mr. Dwelle was Director of Engineering for Wired Digital, leading the technical development of HotBot and other early online media properties. Mr. Dwelle began his career in software as a software developer, project manager, and application architect at Compuware in 1995.
Mr. Dwelle's key areas of expertise include online ad operations and technology, online media, and publishing, internet application and product development, and technology strategy and architecture. Bowen is a rare, proud San Francisco native and an avid kitesurfer.
Follow Bowen on Twitter @Bdwelle
Matt O'Neill: President
Matt O’Neill joined AdMonsters in September 2005 after nearly 7 years at Yahoo!, Inc.. During his time at Yahoo!, Matt focused mainly on inventory management, yield management, and pricing. Between 1999 and 2003, he served as project manager for Yahoo!’s in-house inventory management and forecasting system (IMS). He also led Yahoo!’s exploration of online Reach & Frequency advertising delivery between 2000 and 2003, presenting on the topic at AdMonsters VI. Concurrently, Matt led an industry-wide initiative including agencies, ad serving companies, and publishers to explore the feasibility of a universal ad measurement system that would allow agencies and advertisers to plan, schedule, and deliver their online campaigns using traditional metrics such as GRP.
In July 2003, Matt moved to the UK to lead Yahoo!’s Pricing & Yield Management team in Europe. This involved developing company-wide policies to enforce pricing best practices, systems to generate quarterly rate cards across five countries, and reports and metrics to measure individual sales teams’ performance. While in Europe, he continued to leverage his interest in industry initiatives by helping to launch AdMonsters Europe in July 2003. Matt lives in North London with his wife Bethan.
Follow Matt on Twitter @moneill
Rob Beeler: Vice President, Content & Media
Rob Beeler joined AdMonsters in October 2008 after nearly 10 years at Advance Internet, a leading creator of local news and information web sites across the United States. At Advance Internet, Rob started as the only Ad Operations person and developed a department of 15 people in 8 locations across the country responsible for operations, project management, business development, web analytics and financial reporting, becoming Executive Director of Ad Operations and Analytics in early 2007.
Prior to Advance Internet, Rob held a number of positions related to advertising and publishing ranging from electronic prepress to an ad agency multimedia specialist. Rob graduated from Syracuse University in 1990 with a dual major in Producing for Electronic Media/English. Rob currently resides in Hazlet, NJ with his wife Nancy and their three children.
Follow Rob on Twitter @rbeeler
Daniel Halioua: Director of Sales

Daniel grew up in Brooklyn, NY where he still resides. Daniel joined AdMonsters in early 2010 and brings more than six years of digital media experience to the company. He has previously worked for companies like CBSSports, Operative, & CheckM8 in a range of areas. At CBS Sports he worked on The NFL Today and Road To The Final Four pre-game shows. More recently he has been tasked with growing revenues for companies like Operative & CheckM8. While at Operative he closed and managed over 60 publisher & agency accounts.
Dan loves traveling and spending time with his family and close friends. He's a music, sports, and food lover and enjoys going out as much as possible.
Follow Dan on Twitter @dhalioua
Najine Collins: EU Sales Director
Ms. Collins brings over 15 years media sales experience with the last decade spent working in digital media across both start-up and blue chip organisations. Most recently, Ms. Collins spent eight years with Microsoft Advertising where she worked across the UK, EMEA and APAC markets spending time living and working in both London and Singapore. To date, she has focussed her career in sales and has a proven track record in delivering both great customer service and complex, multi-market partnerships with clients.
Najine enjoys the finer things in life; good food and wine, travel and spending time with family and friends. Her husband, two young children and she recently moved out to Oxfordshire after nearly 20 years living in London to enjoy more space and the country air!
Follow Najine on Twitter @najine
Martin Belk: Events Manager
Martin has been working in events since graduating Sheffield University in 2002. He began his career in event management at a sports travel & hospitality company in Manchester where he helped grow a small firm into a company representing the travel logistics of some of the area's major professional sporting sides. Martin then moved to London in 2005 to work in conference events for GS1 UK, the UK representation of the most widely used supply chain standards system in the world.Martin joined AdMonsters in October 2008 and has been a part of the team ever since, dealing with the day-to-day requirements of all AdMonsters events. Martin spends most of his weekends on the rugby pitches of London, turning out for his beloved Belsize Park RFC and lives with his girlfriend in North London.
Monica Carvalho: Marketing Coordinator

Monica joined AdMonsters in 2010 after graduating from her MA in Marketing with a commendation. Monica is responsible for the day to day aspect of AdMonsters marketing, including managing our text and display campaigns, maintenance of the AdMonsters community and event recruitment. Monica currently lives in London, enjoys a very active social life and speaks fluent Portuguese.
Follow Monica on Twitter @MonicaLNDN
Maria Tucker: Associate Editor
Maria Tucker lives in Cambridge, MA, where she is completing a Master's in Comparative Religion at Harvard Divinity School. Maria graduated from Williams College (Go Ephs!), where she double-majored in Chemistry and Religion and received honors for her thesis on the preserved bodies of ascetics in Shingon Buddhism and in Roman Catholicism. An avid writer and news junkie, Maria interned for the McClatchy News Company in D.C., where she covered the 2009 U.S. presidential inauguration.
Maria has been active in digital media for nearly 5 years, beginning with website development and video production and transitioning into social media & public relations when she launched and maintained the official Williams College social media presences in 2008. Since then, Maria has worked in marketing and website development for various ad tech and mobile startups, including Pongr, Bon’App, U.S. Green Data, and Silvos. Maria loves reading (everything), the internet, food, skydiving, Scrabble, travel, and mummies.
Follow Maria on Twitter @MariaTucker3
Gavin Dunaway, Editor, US
As Editor, US, Gavin Dunaway hunts down the topics on the top of ad operation pros' minds and turns them into in-depth feature articles. He also recruits industry thought leaders (typically breaking out a show-stopping musical number) to contribute opinion and educational pieces for the AdMonsters' website. In addition, Gavin contributes some sweat equity into developing content and recruiting speakers for AdMonsters' wide array of events.
Previously Gavin served as Senior Editor for interactive advertising trade news depot Adotas.com, and before that he held reporting and editing roles for numerous industry-related publications, including TheStreet. Gavin earned his Bachelor's at George Mason University in Fairfax, VA, where he majored in English but also studied theater and film. Goodness knows how he ever launched a career with that background.
While he was born and raised just outside of Washington, DC, he currently resides in the Bushwick neighborhood of Brooklyn because he is an unrepentant, though aging, hipster. When not diligently producing news and feature articles related to ad ops, he enjoys playing guitar so loud that the walls shake.
Follow Gavin on Twitter @AdMonsterGavin
Gautam Srivastava: European Editor

Gautam Srivastava is the EU Editor for all things AdMonsters, helping source speakers and content of the highest order – both for our conferences and our industry leading website.
London born Gautam joined the team having worked across some of the biggest publisher sites in the United Kingdom – mostly recently having spent 4 years in charge of Commercial Content at Global Radio.
A stellar background in content started at City University London where Gautam gained his BA in Journalism and Economics before moving on to write for itv.com, Sky and the afore mentioned Global Radio.
When Gautam (or G as he likes to be known) isn’t nosing out features and sourcing star speakers for AdMonsters he can be found immersed in a comic (graphic novel sorry G), plopped in front of the television playing any one of his array of consoles or having a cheeky beverage at his local public house.
Follow G on Twitter @AdMonsterG













