Employees at ELEKS rank Andrii Krupa in the Top 5% of similar sized companies. Similarly, employees at EPAM Systems rank Balazs Fejes in the Top 5% of similar sized companies. Employees rate their CEO differently based on the frequency of interaction, ability to affect company culture, and drive measurable results.

Andrii Krupa

CEO of ELEKS

BIO: Andriy Krupa is a seasoned executive and legal expert who has been with ELEKS for over a decade. In his role of acting Chief Executive Officer, Andriy is leading the company towards its long-term strategic goals of delivering outstanding customer value results, driving effective innovation throughout the company and expanding its global reach. He holds an MBA from the European School of Management and Technology in Berlin, Germany, and a Master of Law (LLM) degree from Chicago-Kent College of Law, IIT in Chicago, the U.S. Andriy has previously served Chief Compliance officer, overseeing the legal and administrative aspects of the business.

Balazs Fejes

CEO of EPAM Systems

BIO: Before September 2025, Mr. Fejes served as EPAM’s president of global business and chief revenue officer, where he led global client engagement, oversaw market activities, and was responsible for EPAM’s global business operations. During his more than 20-year tenure with EPAM, Mr. Fejes has held a number of senior roles, including president of the Europe and APAC markets, where he led business activities in those regions, co-led global business operations, and oversaw EPAM’s banking and financial services business unit. He also served as chief technology officer (CTO), where he was responsible for ensuring EPAM’s global software development centers operated at the forefront of industry standards for efficiency and quality. Mr. Fejes joined EPAM in 2004 as part of the acquisition of Fathom Technology, a Hungarian software engineering firm he co-founded, where he also served as CTO. Prior to co-founding Fathom Technology, Mr. Fejes held senior technical leadership roles at Great Plains (Microsoft Business Solutions) and Scala Business Solutions. Throughout his career, Mr. Fejes has been a hands-on innovator, visionary architect, and software engineer, earning multiple awards and programming championship honors.