The salary trajectory of a .NET Developer ranges between locations and employers. The salary starts at £33,879 per year (estimate) and goes up to £56,343 per year (estimate) for the highest level of seniority.
The estimated average salary for a .NET Developer at FleetCheck is £117,058 per year or £56 per hour, but some professionals have reported earning up to roughly £182,367 per year (90th percentile). The typical pay range is between £93,245 (25th percentile) and £148,179 (75th percentile) annually. This is based on 2 salaries submitted by FleetCheck .NET Developer professionals on Glassdoor, as of Jul 2026.