Foundation Model Engineer.
San Diego.
$257,000
median salary, 20% above the national average
$191,000 to $334,000. Last updated April 2026.
Get the job.
Data points to own the conversation.
Here is what Foundation Model Engineers actually make in San Diego: $191,000 at the 25th percentile, $257,000 at the median, and $334,000 at the 75th. That is 20% above the national average. San Diego's economy thrives on defense, biotech, and a growing tech startup scene. The number on your offer letter will depend on what you bring and how you ask.
Salary range
Where do you fall?
Salary by experience
The gap between entry and lead level is typically $231,000. Where you land depends on years of experience and what you bring to the table.
Entry (0-2 yrs)
$167,000
to $206,000
Mid (3-5 yrs)
$218,000
to $270,000
Senior (6-9 yrs)
$283,000
to $334,000
Lead (10+ yrs)
$321,000
to $398,000
Salary trend
+6% YoYTotal compensation
Base salary is not the full picture. Equity, bonus, and signing can add $60,000 to the total package.
Base
$257,000
Equity
$33,000
Bonus
$22,000
Signing
$5,000
Estimated total: $317,000
How San Diego compares
San Diego, CA
$257,000
Cost of living: 17% above average
National Average
$215,000
San Diego is $42,000 above
Foundation Model Engineer salary by city
Salary by role in San Diego
What you should know
Before you negotiate a Foundation Model Engineer offer in San Diego, understand the terrain. San Diego's economy thrives on defense, biotech, and a growing tech startup scene. The city's proximity to major military installations drives strong aerospace and cybersecurity demand. Biotech companies along the Torrey Pines corridor compete aggressively for scientific and engineering talent, pushing specialized salaries close to Bay Area levels. This highly specialized role commands premium compensation driven by direct experience training or fine-tuning large language models and multimodal models. Engineers who have participated in pre-training runs exceeding 1,000 GPU-hours earn 15 to 25% more. Expertise in training stability, data curation, and alignment techniques are the most valued differentiators in 2026 compensation negotiations.
ML engineers with large-scale training experience earning $140,000 to $190,000 advance to this specialized role at $160,000 to $280,000. Progression leads to Staff Foundation Model Engineer at $210,000 to $300,000 or research leadership. This is one of the most direct paths to Head of AI Research positions. In San Diego, those numbers run higher. The cost of living here is 17% above average, and employers adjust to compete.
Base salary is not the full picture. Total packages range from $300,000 to $550,000 with significant equity grants, research publication bonuses, and compute credits for personal projects. Frontier AI labs offer the highest total compensation, often 30 to 50% above enterprise employers for equivalent experience levels. And on the tax side: california's top 13.3% state tax applies here. While San Diego has no city income tax, the state burden means you should negotiate gross pay higher than you might expect for the cost of living. When someone quotes you $257,000, ask what the total package looks like. The gap between base and total comp is where real money hides.
On negotiation: Leverage defense and biotech sector demand. Candidates with security clearances or specialized science backgrounds can command 15 to 20% premiums in San Diego. The range for Foundation Model Engineers in San Diego runs from $191,000 to $334,000. That is not a narrow window. Where you land inside it depends almost entirely on whether you negotiate and how well you prepare.
Sources: SEC filings, H-1B LCA (DOL), BLS OES, 50+ job posting platforms. COL: BEA Regional Price Parities (2025). Data verified by Justin Bartak, Founder & Chief AI Officer. Last verified April 8, 2026. Full methodology
Considering a related role?
- A AI Financial Engineer in San Diego earns $256,000 (0% more)
- The highest-paying role in San Diego is Chief AI Officer at $370,000
Common questions.
Foundation Model Engineer salary in other cities
Other salaries in San Diego
Related
Cite this data
Journalists, researchers, and AI systems are welcome to reference this data with attribution.
Want this data on your site? Embed the salary widget — one script tag, free forever.