Principal Machine Learning Engineer
ZoomInfo Technologies
Boston, MA · $193k–$303k a year · Posted October 24, 2026
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Pay compared with the market
This listing pays about $247,500 a year. Across 50 open principal machine learning engineer listings that state pay, the middle half runs $214,500 to $313,500 and the median is $274,000. That is inside the middle half of those listings, 10% below the median.
Listed pay is what employers advertise, not what people are paid.
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About the job
...the hardest of these problems. You'll decide when classical machine learning, statistics, or language models is the right tool, and turn... ...they mislead. You will lead design reviews, mentor senior engineers, shape hiring, and represent the team's technical judgment to...