SpotXchange poaches Brightroll’s client and publisher lead Leon Siotis for MD role

By Seb Joseph | News editor

June 22, 2015 | 3 min read

Programmatic advertising business SpotXchange has poached Leon Siotis from fellow ad technology firm Brightroll to become its managing director for the UK and Southern Europe.

He joins in July and is tasked with quickening the uptake of the company’s supply-side platform across both regions.

Siotis will lead the team’s discussions with publishers on revenue generation, advising on everything from creating private marketplaces to securing programmatic guaranteed deals. Consequently, he will work closely with the UK’s biggest publishers and media owners at a time when video is fast emerging as a more premium and effective alternative to traditional ad formats.

Leon Siotis

His arrival follows the appointments of Elwin Gastelaars as managing director for Benelux and the Nordics, as well as Stefan Beckmann as managing director for Germany, Austria and Switzerland. The three will work together to scale up the business throughout Europe following its acquisition by broadcaster RTL last year.

Siotis joins from video ad platform Brightroll where he expanded its team and client portfolio on the buy and sell-side as senior director for client and publisher development. Prior to that, he was at Rubicon Project and focused on Demand-Side Platforms (DSPs) and agencies across EMEA. This followed two years at MySpace and a stint at

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Mike Shehan, chief executive of SpotXchange, said: “Leon Siotis brings years of digital experience gained at some of the industry’s major advertising platforms. He launched Real-Time-Bidding (RTB) and programmatic buying to agencies across Europe and worked in video at BrightRoll, Yahoo and at

"We couldn’t ask for better experience in Europe than the combination of Siotis, Beckmann and Gastelaars to help publishers and broadcasters optimise their revenue from video, mobile video, IPTV and programmatic TV advertising.”


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