About Us

Helping global brands to become iconic since 1996, CoreMedia is committed to forging high-touch collaborations with category leaders across all industries – fashion, finance, media, manufacturing, and more. CoreMedia Content Cloud enables brands to do more with their content, create powerful digital experiences, and become an iconic global brand.

Managing Director

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Sören Stamer

Sören Stamer is head ninja, top strategist, main innovation engine, and chief optimist of CoreMedia. Technically the company’s Managing Director leads the company’s vision: forward focused while acutely aware of today’s competitive climate.

Sören’s interest is in the power of massive networks to bring about massive change. A pioneering advocate of social media, he has contributed important thought leadership on web content strategy, digital rights management, and enterprise 2.0.

Along with a Master of Business Administration (Diplom-Kaufmann) from the University of Hamburg, he has extensive startup and leadership experience, co-founding CoreMedia in 1996. He is passionate about early childhood education and solutions for society's challenges in the age of A.I.

Sören is an award-winning author, speaker, father of four fun kids, and a very happy husband (not as hard as it may sound, lol).

Management Team

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Florian Grebe
Chief Sales Officer

Florian Grebe is responsible for overall sales and he coordinates the cross-sector sales operations of CoreMedia.

On joining CoreMedia, Florian Grebe successfully expanded the company’s activities in the public and industry sectors, including customers like Seat, Continental, EPCOS and numerous federal ministries.

After successfully completing his studies in business and commerce, he began his career at T-Mobile Germany in the area of location management and acquisition. Before joining CoreMedia, he worked in sales for Siemens Building Technologies in the area of complex plant engineering and construction solutions and was responsible for winning new customers and providing key account support.

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Karsten Reuter
SVP Product Management

Karsten Reuter is leading the Product Management Team of CoreMedia. 

Karsten joined CoreMedia in 2001 and managed a variety of projects for customers such as Deutsche Telekom, Vodafone and ARD, among others. After establishing the U.S. Professional Services organization in San Francisco, he formed the e-Commerce Practice at CoreMedia and was responsible for implementing CoreMedia LiveContext for customers including JD Group, Mondou and Petedge. Prior to that, he worked for the Ponton European Media Art Lab on research projects related to Interactive TV, Virtual Reality and SmartHome. 

In 1996, Karsten Reuter earned a degree in Computer Science from the University of Karlsruhe.

Jim Stirewalt, GM CoreMedia Inc
Ben Mooney
Global VP, Marketing & Partner Ecosystems

In 2019 Ben joined CoreMedia as Global VP, Partner Ecosystems & Corporate Development. Ben leads the platform ecosystem strategy and formation of mutually successful relationships with technology partners, digital agencies, consultants, and systems integrators across North America. He is driving CoreMedia’s global Business Development efforts and corporate strategy to build a significant qualified pipeline for both CoreMedia and partners.

Ben has a 15+ year track record of developing alliances and leading business transformation efforts across some of the largest holding companies, including IPG and Publicis, and the world’s most successful digital experience agencies, including MullenLowe Profero, Publicis Sapient, Razorfish, and the BlueArc Group.

Ben relocated from Sydney to New York in July 2018 with his family of five. In between his role at CoreMedia and family life, he founded and runs Dads Group and The Business of Transformation Interview Series, where he interviews digital marketing and technology leaders around the world.

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René Lepenis
VP Fincance & IT

René Lepenis is the head of finance, billing, payroll, purchasing, office management, and IT.

As well as managing liquidity and preparing the annual financial statements according to HGB (German Commercial Code) and IFRS, René is the contact person for auditors, tax advisors, banks and other financial service providers, public authorities, and suppliers. He also has the task of optimizing the internal structures and processes of this fast-growing company and heading the IT department.

René completed his business economics studies at the University of Bayreuth, specializing in commercial finance, banking management, tax, and auditing. After completing his MBA and before joining CoreMedia, he worked for Deloitte & Touche from 1997 to 2001.

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Tobias Stadelmaier
VP Engineering

As VP Engineering, Tobias Stadelmaier leads CoreMedia’s engineering department, helping our highly motivated team of experts to develop great CoreMedia products. Responding swiftly to customer requirements and adapting nimbly to changes in the market, Tobias and his team are proud of their record of delivering customer-ready innovations.

Tobias started his career at CoreMedia in 2001 as a Technical Consultant and worked for three years as a Delivery / Engagement Manager and Product Owner. After a detour into the games industry as a Senior Product Owner, he returned to CoreMedia in Summer 2016.

Tobias Stadelmaier holds a degree in Political Science from the University of Bamberg, Germany.

Phil Radcliffe VP Sales UK
Phil Radcliffe
VP Customer Success

Phil Radcliffe is the responsible manager for customer success worldwide. 

For more than ten years, he has been working with retailers and brands in EMEA across a wide variety of digital Transformation projects. Phil has worked at CoreMedia in various technical, project and sales roles with clients such as Yoox Net-a-Porter, Boots, Homebase, Vodafone, Nation Media Group, ComHem and Nokia.

Phil holds a BEng in Mechanical Engineering.

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Doug Heise
VP Marketing

Doug Heise leads CoreMedia’s global marketing efforts with special focus on Strategy, Product Marketing and Analyst relationship.

Doug Heise started his career at CoreMedia as Global Director of Product Marketing. Before joining the company, he served as Head of Strategy for BBC Technology’s North American digital media team and led product marketing efforts for Hewlett-Packard’s Digital Media Platform. As an independent consultant, he has worked for a range of Fortune 100 companies including Visa, Microsoft, and Cisco.

Doug Heise holds a Bachelor of Arts from Stanford University and a Master of Philosophy degree from the University of Glasgow in Scotland. He is married and father of a son.

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Martin Schlüter
VP Sales DACH

Martin Schlüter is responsible for sales in Germany, Austria and Switzerland. He coordinates direct distribution of CoreMedia software, and is also in charge of sales support for implementation partners.

Martin has been active in the sales department of CoreMedia since 2007. He started in direct sales for the public-sector and industrial clients, adding responsibility for European Partner Management in 2011. Martin helped to expand the CoreMedia Partner Network, so that today it contributes significantly to overall sales: With Martin’s dedicated support, CoreMedia was able to win clients such as Deutsche Börse Group, IHK24, DIN, VDE, Rehau, DMG Mori Seiki, SOS Kinderdorf, German Committee for Unicef and Finnair.

Martin Schlüter studied at the Hannover Polytechnic and holds a Diploma of Engineering in electrical engineering. Before coming to CoreMedia, Martin worked at companies including Kodak, SER and Saperion, in the fields of direct sales of technical services, hardware and enterprise software solutions

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