Exhibit 99.1 EPAM Reports Results for First Quarter 2024 and Updates Full Year Outlook • First quarter revenues of $1.165 billion, down 3.8% year-over-year • GAAP income from operations was 9.5% of revenues and non-GAAP income from operations was 14.9% of revenues for the first quarter • First quarter GAAP diluted EPS of $1.97, an increase of $0.24, and non-GAAP diluted EPS of $2.46, a decrease of $0.01 on a year-over-year basis • For the full year, EPAM updates expected revenues to now be in the range of $ ...