The estimated average salary for a Senior Software Engineer, Machine Learning at Meta is £74,182 per year or £36 per hour, but some professionals have reported earning up to roughly £138,848 per year (90th percentile). The typical pay range is between £56,501 (25th percentile) and £100,790 (75th percentile) annually. This is based on 58 salaries submitted by Meta Senior Software Engineer, Machine Learning professionals on Glassdoor, as of Jun 2026.