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Who We Are

Concrete Wall

Heather Kaminetsky

President- Mytheresa,

North America

Heather Kaminetsky joined Mytheresa in 2021 as President, North America to strategically lead the expansion of the Mytheresa business and brand in the United States and Canada.

Heather’s initial focus was around setting up a fully dedicated customer-facing US team to helpexecute on the expansion which is a top priority market for Mytheresa. She is overseeing and
leading all the brand’s customer-facing activities in the North American market, including Personal Shopping, Communications, and Affiliate Marketing. She is credited with the extraordinary GMV growth of 40.8% in the US for Q4 FY23.

Throughout her career, Heather has worked across Fashion and Digital brands and brings a wealth of consumer-centered experience to this new role for Mytheresa. She has held executive positions in multiple companies which include NET-A-PORTER, where she was Vice President Global Marketing, Borderfree, where she served as SVP Business Management, Barneys New York as Vice President of Marketing and M.Gemi, where she most recently held the role of Chief
Executive Officer.

Mario Barton

Head of Marketplace,

North America at Farfetch

Mario Barton is Head of Marketplace, North America at Farfetch. He is a successful Operator with over 15 years of experience in E-commerce, with a focus on luxury goods, customer experience and warehousing. As a people leader his strengths lie in strong communication, expectation management and operational efficiency.

Ivette Nersesyan Stephanopoulos

VP, Code of Origin &

Trade Services at De Beers Group

Ivette Nersesyan-Stephanopoulos is the VP of Code of Origin and Trade Services at De Beers Group. Previously, she was the Sr. Director of Global Business Development at the Gemological Institute of America (GIA) and the Director of Wedding and High Jewelry categories at David Yurman. She is a fine jewelry, luxury, and diamond executive with over 22 years of experience buying, selling, marketing, managing, growing, and consulting in the
luxury goods industry.


Ivette serves on the National Board of Women’s Jewelry Association, Jewelers for Children Foundation, she is the President of Armenian Jewellery Association. Ivette holds two Master's Degrees, one in Russian Philology and another in Educational Psychology from Fordham University, as well as an AJP Diploma from GIA and Pearl as One Certificate from CPAA.

Julia Stripe Jaffe

Director, Store Design &

Construction at David Yurman


Matt Brown

Office Manager

Matt is currently the Vice President and Store Director of Saks Fifth Avenue’s NY Flagship store since April 2021, overseeing all store operations at the iconic location in NYC. Matt began his career at Saks 14 years ago as a Selling Manager and ascended into roles of increased levels of responsibility, including working in multiple markets:  Houston, Philadelphia, and Chicago. Through every step in Matt’s career, he’s been committed to delivering exceptional customer experiences, driving results, and fostering innovation in the luxury retail industry.


To note, Matt is a proud graduate of Fordham University, majoring in Communications and
Media Studies, class of 2004.

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