The salary trajectory of a Performance Engineer ranges between locations and employers. The salary starts at £0 per year (estimate) and goes up to £0 per year (estimate) for the highest level of seniority.
The estimated average salary for a Performance Engineer at Network Rail is £154,627 per year or £74 per hour, but some professionals have reported earning up to roughly £235,018 per year (90th percentile). The typical pay range is between £124,959 (25th percentile) and £193,216 (75th percentile) annually. This is based on 59 salaries submitted by Network Rail Performance Engineer professionals on Glassdoor, as of Jun 2026.