The salary trajectory of a a SQL Developer ranges between locations and employers. The salary starts at £26,824 per year (estimate) and goes up to £56,142 per year (estimate) for the highest level of seniority.
The estimated average salary for a SQL Developer at SQLI is £46,631 per year or £22 per hour, but some professionals have reported earning up to roughly £85,022 per year (90th percentile). The typical pay range is between £34,544 (25th percentile) and £63,568 (75th percentile) annually. This is based on 1 salaries submitted by SQLI SQL Developer professionals on Glassdoor, as of Jun 2026.