Enter your search terms:


Our Team

Our team has worked together for many years, building planning and supply chain solutions for some of the world’s largest retailers and in some of its most challenging markets.  We grew dissatisfied with the state of technology and, more importantly, with how this technology was positioned and deployed to retailers.


With Dataviva we built a new generation of planning and supply chain platform, using the latest in proven, web-scale technologies.  We also designed our software and our approach to be pragmatic, based on how retailers need to solve real business problems in the real world, with time and budgetary constraints.

Costas Malamas, Founder & CEO


Costas brings 20+ years of experience in leading teams and building complex supply chain solutions for some of the world’s best-known retail brands, such as Sainsbury’s, Tesco, Kroger, Ahold, Disney, Landmark Group, Sportmaster, and many more. He has extensive knowledge of enterprise demand forecasting and inventory optimization solutions, predictive analytics and algorithms. Costas started his career as an engineer and a consultant with Retek (now Oracle Retail) and later co-founded and led Veltio, which quickly grew to become the largest Oracle Retail Planning and Optimization consultancy world-wide –and one of the largest such practices for any platform anywhere. He holds a BSc in Aerospace Engineering from Georgia Tech and a MSc in Aeronautics and Astronautics from Stanford University.

Dimitris Atmatzidis, Supply Chain


Dimitris brings 10+ years of experience in building and deploying supply chain planning solutions for some of the world’s largest retailers, including Sainsbury’s, Kroger, Vodafone among many others. He was also the product owner of the Veltio supply chain solutions that are now at the core of Dataviva, leading the product teams, managing the product roadmap and discovering the needs and pain points of customers worldwide. As a consultant in Veltio, Dimitris managed several project and development teams and grew to become one of the company’s principals. He holds a Diploma in Electrical and Computer Engineering from the National Technical University of Athens and a MSc in Analysis, Design and Management of Information Systems from the London School of Economics and Political Science.

Vasilis Zarimpas, Demand Forecasting


Vasilis brings 10+ years of experience in developing, tuning and optimizing demand forecasting systems for very large retailers such as Kroger, Sainsbury’s, Carrefour and many more. He was the product owner for the Veltio forecasting solutions that are now Dataviva Demand Forecasting. Vasilis has recruited, trained and managed a large data science team of researchers working on real retail data. Previously, he has worked as a software developer and researcher in the IT Communications field. After his PhD, he joined Veltio as a data scientist and grew to become one of the company’s principal consultants. He holds a BEng in Communication Systems, a MSc in Personal and Mobile Radio Communications Engineering and a PhD in Error Correction Codes and Signal Processing from Lancaster University.