The salary trajectory of a an Operating 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 Operating Engineer at TechnologyOne is £46,894 per year or £23 per hour, but some professionals have reported earning up to roughly £87,076 per year (90th percentile). The typical pay range is between £34,594 (25th percentile) and £64,400 (75th percentile) annually. This is based on 1 salaries submitted by TechnologyOne Operating Engineer professionals on Glassdoor, as of Jul 2026.