The estimated average salary for a Process Technology Development Engineer at STMicroelectronics is £41,069 per year or £20 per hour, but some professionals have reported earning up to roughly £70,767 per year (90th percentile). The typical pay range is between £32,414 (25th percentile) and £53,540 (75th percentile) annually. This is based on 1 salaries submitted by STMicroelectronics Process Technology Development Engineer professionals on Glassdoor, as of Jun 2026.