Principal Machine Learning Engineer
Cambridge Mobile Telematics
Cambridge, MA · $198k–$248k a year · Posted September 18, 2026
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Pay compared with the market
This listing pays about $223,100 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, 19% below the median.
Listed pay is what employers advertise, not what people are paid.
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About the job
<p>As a Principal Machine Learning Engineer I, you will design, build, and operate production ML systems at scale. You will turn advanced models for sequential and multi-modal data into reliable products that power risk assessment, engagement, and event detection. You will partner with research, product, and platform teams to deliver measurable business impact across cloud and edge. </p> <p>CMT is looking for a <strong>Principal Machine Learning Engineer I </strong>to help us change the world. CMT has helped protect over 65 million drivers and prevent over 126,000 crashes worldwide. We build AI to solve some of the most difficult challenges in mobility — understanding and reducing risk, detecting crashes, and getting people life-saving help. The problems are hard. The impact is real. No matter your role, your work will matter at CMT.</p> <p><strong>Qualifications:</strong></p> <ul> <li>Master's degree or equivalent years of experience and/or certification in Data Science,…
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