Principal Engineers in Cardiff earn an average base salary of around £136,000 per year, with entry-level professionals starting closer to £95,200 and senior or lead-level roles reaching upwards of £190,400. This page breaks down principal engineer salary ranges in Cardiff by experience level, the top-paying employers, the skills that move you up the band, and how the local cost of living shapes take-home pay. Use the data below to benchmark your own offer, plan your next move, or update your CV with a competitive target salary.
Principal Engineer Salary in Cardiff
Verified data. Updated 2026. Negotiate with confidence.
Salary range · Cardiff
Entry
£95,200
Median
£136,000
Senior
£190,400
Estimates based on industry data, adjusted for cost of living in Cardiff.
Frequently asked questions
The average principal engineer salary in Cardiff is approximately £136,000 per year, with a typical range from £95,200 to £190,400 depending on experience.