Level-Specific Salary Guide

Principal Machine Learning Engineer Salary in San Francisco (2026)

Updated July 20266 min readSources: BLS OES 2024, Levels.fyi 2024, JFR job feed

Principal Machine Learning Engineers in San Francisco earn a median base salary of $456K per year, based on 5,000 verified data points. This guide covers salary ranges, total comp, and negotiation tactics specific to the principal level in 2026.

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Verified — 2026 · Principal Level
Machine Learning Engineer · San Francisco
0% YoY
25th Percentile
$359K
Walk-away floor
Median (50th)
$456K
Market midpoint
75th Percentile
$580K
Realistic ceiling
Sources: BLS OES 2024, Levels.fyi 2024, JFR job feed·Sample: 5,000 data points

Machine Learning Engineer salary by level in San Francisco

See how principal-level pay compares to other seniority bands for the same role and location.

LevelApprox. Median Base
Junior$168K
Mid-Level$240K
Senior$324K
Staff$396K
PrincipalThis guide$456K

* Figures are approximate estimates relative to the principal-level verified data above.

What does a Principal Machine Learning Engineer earn in San Francisco in 2026?

The median base salary for a Principal Machine Learning Engineer in San Francisco is $456K per year, with the 25th–75th percentile range spanning $359K$580K. Total annual compensation — including bonuses and equity — typically reaches $653K at the median for principal-level engineers.

At the principal level, engineers own cross-organisational technical strategy. The Principal level is the individual contributor equivalent of a Director, and compensation reflects both the scarcity of this talent and the leverage these engineers provide.

To negotiate effectively, open at $531K — the 65th percentile for this level and location — which gives you room to settle above median while appearing reasonable. Know your walk-away floor: $359K.

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Top-paying companies for Principal Machine Learning Engineers in San Francisco

CompanyMedian Base
OpenAI$561K
Anthropic$542K
Google DeepMind$418K
Meta AI$399K
Microsoft Research$390K
Tesla$333K
Palantir$371K

Skills that pay more at the principal level

LLM / GenAI
+32%
PyTorch / TensorFlow
+20%

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