The salary trajectory of a Mechanical Design Engineer ranges between locations and employers. The salary starts at £36,871 per year (estimate) and goes up to £54,880 per year (estimate) for the highest level of seniority.
The estimated average salary for a Mechanical Design Engineer at Randox Laboratories is £118,442 per year or £57 per hour, but some professionals have reported earning up to roughly £178,399 per year (90th percentile). The typical pay range is between £96,302 (25th percentile) and £147,322 (75th percentile) annually. This is based on 17 salaries submitted by Randox Laboratories Mechanical Design Engineer professionals on Glassdoor, as of Jul 2026.