Management / Executive Team

Dimitris Kalias, PhD

Chief Executive Officer & Founder

Dimitris has held various senior positions in business development, sales and chemical development in leading chemical and pharmaceutical companies including Ciba-Geigy, EMS Dottikon and Lonza.

He founded VIO Chemicals AG in 2001. 

Dimitris completed his studies with a Ph.D. in Organic Chemistry from the University of Zurich. 


Tel: +41 44 380 24 44

Yujing Zu, MBA

Director of China Office

Yujing started working for VIO Chemicals in 2008. She combines extensive expertise in Sustainable Business Development, International Trade, Sourcing and Supply Chain Management in the chemical and pharmaceutical Industries on global level. In her last position she was the International Trade Director in a chemical trading company. 

Yujing graduated from Cardiff University Business School in the United Kingdom with a degree in Master of Business Administration MBA.

Tel.: +86 25 8689 3201

Manuela Miracola

Head of Administration / Sales 

Manuela joined VIO Chemicals in 2006.  She has over 20 years of experience in the chemical field, mainly as head of a back office team responsible for administration as well as purchasing and sales with close customer contact. In her last position she was Sales Manager Switzerland and Italy in a chemical trading company. Manuela graduated from KV Zürich Business School with a degree in Commerce.

Tel: +41 44 380 24 44

Ralf Budnik, PhD

Business Development Manager

Ralf joined VIO Chemicals in 2014. Previously, he was responsible for business development at Indukern Chemie AG and has held several senior positions in business development, key account management and international sales in the chemical industry. 

Ralf studied Chemistry at the University of Essen, Germany, where he also obtained his Ph.D.


Tel: +41 44 380 24 44

Michael Scholze, PhD

Sales Manager 

Michael joined VIO Chemicals in 2016. Before, he was responsible for Business Intelligence at Bachem, and held positions as Business Development Manager and Key Account Manager at Solvias, with responsibilities in Europe and the United States. Michael studied Chemistry and did his Ph.D. at the University of Frankfurt, Germany, followed by a Postdoc at the University of Iowa.


Tel: +41 44 380 24 50


Maria Andrielou

Marketing & Communication Officer

Maria joined VIO Chemicals in 2017. Previously, she worked as Communications Counsellor for Research & Innovation in the European Chemical Industry Council (Cefic) in Brussels and Communications Adviser for the Environmental Engineering Laboratory of the Aristotle University of Thessaloniki. Maria studied linguistics and has a Master's degree in Cross-Cultural Communication & International Relations from the University of Newcastle. 


Tel: +30 2310 477 603


Haris Koftis, PhD

Scientific Advisory Board

Haris has 20 years of combined experience in organic synthesis, process development and a thorough understanding of the efficiency, quality and compliance requirements of the pharmaceutical and chemical industry. He was directly involved in the establishment of the Pharmathen API R&D center in Thessaloniki, Greece (2005), where he was appointed Director of R&D API Operations in 2011, delivering so far a portfolio of 20 APIs and leading the operational expansion and diversification of the team’s targets and outputs.

He received his Ph.D. in Organic Chemistry from the Aristotle University of Thessaloniki, Greece, followed by a 3-year Postdoc appointment at the Scripps Research Institute in La Jolla, California. He has published more than 20 papers and 30 patents as a result of the industrial research in the field.


Tel.: +30 2310 477 601