The salary trajectory of a a Frontend Developer ranges between locations and employers. The salary starts at £20,193 per year (estimate) and goes up to £72,195 per year (estimate) for the highest level of seniority.
The estimated average salary for a Frontend Developer at Behaviour Lab is £45,201 per year or £22 per hour, but some professionals have reported earning up to roughly £74,726 per year (90th percentile). The typical pay range is between £35,460 (25th percentile) and £58,359 (75th percentile) annually. This is based on 1 salaries submitted by Behaviour Lab Frontend Developer professionals on Glassdoor, as of Jul 2026.