The estimated average salary for a Lead Software Development Engineer In Test (SDET) at EPAM Systems is £91,440 per year or £44 per hour, but some professionals have reported earning up to roughly £146,155 per year (90th percentile). The typical pay range is between £72,546 (25th percentile) and £116,383 (75th percentile) annually. This is based on 1 salaries submitted by EPAM Systems Lead Software Development Engineer In Test (SDET) professionals on Glassdoor, as of Jun 2026.