The estimated average salary for a Software Development Engineer In Test (SDET) at EPAM Systems is £56,350 per year or £27 per hour, but some professionals have reported earning up to roughly £95,540 per year (90th percentile). The typical pay range is between £43,427 (25th percentile) and £73,912 (75th percentile) annually. This is based on 1 salaries submitted by EPAM Systems Software Development Engineer In Test (SDET) professionals on Glassdoor, as of Jun 2026.