The estimated average salary for a Senior Software Development Manager at Grant Instruments is £132,286 per year or £64 per hour, but some professionals have reported earning up to roughly £302,522 per year (90th percentile). The typical pay range is between £94,164 (25th percentile) and £197,689 (75th percentile) annually. This is based on 1 salaries submitted by Grant Instruments Senior Software Development Manager professionals on Glassdoor, as of Jun 2026.