Data Architect (AI/ML).
St. Louis.
$165,000
median salary, 7% below the national average
$125,000 to $215,000. Last updated April 2026.
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Data points to own the conversation.
St. Louis is 10% cheaper than the national average. For Data Architect (AI/ML)s, that shakes out to a median of $165,000, with the full range spanning $125,000 to $215,000. Data architects specializing in AI and ML systems command premium pay for designing scalable data platforms that support model training and serving. Know the range before you walk in.
Salary range
Where do you fall?
Salary by experience
The gap between entry and lead level is typically $149,000. Where you land depends on years of experience and what you bring to the table.
Entry (0-2 yrs)
$107,000
to $132,000
Mid (3-5 yrs)
$140,000
to $173,000
Senior (6-9 yrs)
$182,000
to $215,000
Lead (10+ yrs)
$206,000
to $256,000
Salary trend
+3% YoYTotal compensation
Base salary is not the full picture. Equity, bonus, and signing can add $44,000 to the total package.
Base
$165,000
Equity
$25,000
Bonus
$16,000
Signing
$3,000
Estimated total: $209,000
How St. Louis compares
St. Louis, MO
$165,000
Cost of living: 10% below average
National Average
$178,000
St. Louis is $13,000 below
Data Architect (AI/ML) salary by city
Salary by role in St. Louis
What you should know
The Data Architect (AI/ML) landscape in St. Louis is not what most salary sites will tell you. St. Louis offers one of the most affordable major metro areas in the country, with a strong base in healthcare, financial services, and manufacturing. The region's anchor employers include Boeing, Centene, and Washington University's medical campus. A growing biotech and plant sciences corridor centered on the Cortex Innovation District is attracting new investment and talent. Data architects specializing in AI and ML systems command premium pay for designing scalable data platforms that support model training and serving. Experience architecting lakehouse solutions and real-time feature stores is highly valued. Enterprise experience at companies with complex data governance requirements adds 15 to 25% to compensation.
Junior data architects earn $135,000 to $160,000. Architects with 5 to 8 years of experience designing ML data systems reach $178,000 to $232,000. Principal architects earn $240,000 to $320,000, while chief data architects and VP-level roles can command $350,000 to $450,000. In St. Louis, cost of living sits near the national average, so the numbers you see are roughly what you keep.
Base salary is not the full picture. Senior data architects receive equity packages of 20 to 35% of base salary at tech companies. Consulting data architects can earn $200 to $350 per hour as independent contractors. Annual bonuses range from 15 to 25%, with some firms offering architecture patent bonuses. And on the tax side: missouri's top income tax rate is about 4.8%, and St. Louis City adds a 1% earnings tax. The low base cost of living means your after tax salary still stretches further than in most metros. When someone quotes you $165,000, ask what the total package looks like. The gap between base and total comp is where real money hides.
On negotiation: Emphasize your willingness to work in person at Cortex or the BJC campus. St. Louis employers offer higher packages for candidates who commit to the local innovation hubs. The range for Data Architect (AI/ML)s in St. Louis runs from $125,000 to $215,000. 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 Engineer in St. Louis earns $164,000 (1% less)
- The highest-paying role in St. Louis is Chief AI Officer at $276,000
Common questions.
Data Architect (AI/ML) salary in other cities
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