The salary trajectory of a Principal Process Engineer ranges between locations and employers. The salary starts at $129,124 per year (estimate) and goes up to $238,049 per year (estimate) for the highest level of seniority.
The estimated average salary for a Principal Process Engineer at Bayer is $216,042 per year or $104 per hour, but some professionals have reported earning up to roughly $329,097 per year (90th percentile). The typical pay range is between $175,264 (25th percentile) and $270,609 (75th percentile) annually. This is based on 10 salaries submitted by Bayer Principal Process Engineer professionals on Glassdoor, as of Jul 2026.
Principal Process Engineer professionals typically earn between $84 and $130 per hour.
Principal Process Engineer professionals typically earn between $14,605 and $22,551 monthly.