The salary trajectory of a a Full Stack JavaScript Developer ranges between locations and employers. The salary starts at £43,440 per year (estimate) and goes up to £89,882 per year (estimate) for the highest level of seniority.
The estimated average salary for a Full Stack JavaScript Developer at Stack Summation is £47,129 per year or £23 per hour, but some professionals have reported earning up to roughly £73,541 per year (90th percentile). The typical pay range is between £37,286 (25th percentile) and £59,571 (75th percentile) annually. This is based on 1 salaries submitted by Stack Summation Full Stack JavaScript Developer professionals on Glassdoor, as of Jul 2026.