Regional Leaders

Mr. Julio Villamayor, Vice President of Commercial Operations Americas has over 22 years of experience in Supply Chain, Corporate Banking, Global Account Management, Sales and Marketing.

Senior Management Executive with relevant experience in the development, implementation and support of cutting-edge Logistics Solutions, including analytical tools for Business Intelligence purposes, Mr Villamayor fuses commercial operations and financial acumen to protect assets, spark organizational growth, and drive team performance levels.

Mr. Villamayor has held various leadership positions in Latin America and USA, managing Sales and Marketing teams for both Public and Private Corporations. Experience spans US, South and Central America.

Currently Mr. Villamayor is leading the Americas sales teams with a clear goal of expanding Marken’s footprint in the region and its brand recognition.

Mr. Villamayor holds a Masters degree in Business Administration from IAE Graduate Institute of Business Studies and he is a graduate of the Faculty of Economics Sciences with a specialization in International Trade at the University UdeMM, Buenos Aires, Argentina. 

Dipl.-Oec. Sascha Sonnenberg has studied economics at the University of Kasselin the field of Marketing. He collected 4 years experience in the area of project management and selling at the IT & Consulting company GEDYS AG in Braunschweig and Vienna before he changed to Vanguard GmbH as a sales director. May 2003 until December 2004 he completed his MBA at the Kassel International Management School in the emphasis “International Business and Management”. June 2004 he joined Faubel were he was responsible for Sales & Marketing and developing the strategy that has made them a leader in the Clinical Trial Supply industry. March 2009 he started Faubel Pharma Services Corp. a New Jersey, US based spin off from Faubel to build up there US presence in Clinical Trial Supplies.

Since March 2011 he is with Marken Ltd. as Vice President Commercial Operations supporting their strategy for growth in Europe and with strategic clients.

Beside his profession Sascha Sonnenberg is an active member of the APV Knowledge Group for Pharmaceutical Packaging and engaged in the ISPE Community of Practice on Investigational Products.

Choong-Siah Ng is the General Manager of Marken Singapore.  Singapore remains as one of the most important logistics hubs in the region, and is one of the three regional Administrative Towers within the Marken global network.  In his role, Choong-Siah manages both the day to day operations of the Singapore branch, as well as the Singapore Administrative Tower.

Choong-Siah has previously worked in the areas of Industrial Engineering, Program Management, Sales Budgeting, Sales Programs and Sales Incentives, and Operations.

Choong-Siah holds a Master of Science (Industrial Engineering) from the Georgia Institute of Technology.