Feature Store Engineer.
St. Louis.
$155,000
median salary, 10% below the national average
$117,000 to $203,000. Updated for 2026.
The numbers.
Everything you need to negotiate with confidence.
If you are evaluating a Feature Store Engineer offer in St. Louis, MO, here is the reality: $117,000 to $203,000, with $155,000 as the midpoint. 10% below the national average. Feature store engineers build infrastructure that serves ML features at scale, a specialized role that combines data engineering with ML platform knowledge. Do not accept the first number.
Salary range
Tap to place your salary
How St. Louis compares
St. Louis, MO
$155,000
Cost of living: 10% below average
National Average
$172,000
St. Louis is $17,000 below
What you should know
Here is what the Feature Store Engineer market actually looks like in St. Louis. 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. Feature store engineers build infrastructure that serves ML features at scale, a specialized role that combines data engineering with ML platform knowledge. Experience with systems like Feast, Tecton, or custom feature platforms drives salary above standard data engineering roles. Companies running real-time ML inference at scale pay the highest premiums.
Junior feature store engineers earn $130,000 to $155,000. Engineers with 3 to 5 years of ML infrastructure experience reach $172,000 to $225,000. Senior engineers and tech leads earn $230,000 to $300,000, while staff engineers and ML platform architects can command $310,000 to $400,000. 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. ML platform companies offer equity packages of 20 to 40% of base salary. Annual bonuses typically range from 12 to 20%. Some firms provide additional compensation for on-call rotations supporting production feature serving systems at $10,000 to $20,000 annually. 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 $155,000, 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 Feature Store Engineers in St. Louis runs from $117,000 to $203,000. That is not a narrow window. Where you land inside it depends almost entirely on whether you negotiate and how well you prepare.
Top industries in St. Louis
Negotiating in St. Louis
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.