The salary trajectory of a Principal Engineer ranges between locations and employers. The salary starts at $114,377 per year (estimate) and goes up to $378,515 per year (estimate) for the highest level of seniority.
The estimated average salary for a Principal Engineer at Radius Innovation & Development is $243,290 per year or $117 per hour, but some professionals have reported earning up to roughly $388,939 per year (90th percentile). The typical pay range is between $192,061 (25th percentile) and $312,836 (75th percentile) annually. This is based on 2 salaries submitted by Radius Innovation & Development Principal Engineer professionals on Glassdoor, as of Jul 2026.
Principal Engineer professionals typically earn between $92 and $150 per hour.
Principal Engineer professionals typically earn between $16,005 and $26,070 monthly.