The estimated average salary for a Senior Python Developer/Software Engineer at J.P. Morgan is £74,156 per year or £36 per hour, but some professionals have reported earning up to roughly £138,744 per year (90th percentile). The typical pay range is between £56,485 (25th percentile) and £100,739 (75th percentile) annually. This is based on 6 salaries submitted by J.P. Morgan Senior Python Developer/Software Engineer professionals on Glassdoor, as of Jun 2026.