O2
Part of Telefónica
Engaged employer
Recent salaries shared by Principal Engineer at O2
Job title | Years of Experience
Total Pay
Base • Additional pay
Location
Date submitted
Job title | Years of Experience
Location
Date submitted
Total Pay
Base • Additional pay
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O2 pay FAQs
- The average salary for a Principal Engineer is £62,413 per year (estimate) in United Kingdom, which is 4% lower than the average O2 salary of £65,000 per year (estimate) for this job.
- O2 employees working as a Principal Engineer in United Kingdom have attributed a compensation and benefits rating of 5 out of 5 stars, based on 2 ratings. This is in line with the average of Principal Engineer professionals at O2 worldwide.
- The salary trajectory of a a Principal Engineer ranges between locations and employers. The salary starts at £43,374 per year (estimate) and goes up to £144,626 per year (estimate) for the highest level of seniority.
- The estimated average salary for a Principal Engineer at O2 is £67,053 per year or £32 per hour, but some professionals have reported earning up to roughly £114,030 per year (90th percentile). The typical pay range is between £53,032 (25th percentile) and £87,012 (75th percentile) annually. This is based on 5 salaries submitted by O2 Principal Engineer professionals on Glassdoor, as of Jul 2026.
