The salary trajectory of a Assistant Engineer ranges between locations and employers. The salary starts at £30,983 per year (estimate) and goes up to £144,626 per year (estimate) for the highest level of seniority.
The estimated average salary for a Assistant Engineer at Laing O'Rourke is £98,175 per year or £47 per hour, but some professionals have reported earning up to roughly £163,546 per year (90th percentile). The typical pay range is between £75,580 (25th percentile) and £128,923 (75th percentile) annually. This is based on 8 salaries submitted by Laing O'Rourke Assistant Engineer professionals on Glassdoor, as of Jul 2026.