Synthetic Data Engineer.
St. Louis.
$149,000
median salary, 10% below the national average
$113,000 to $194,000. Updated for 2026.
The numbers.
Everything you need to negotiate with confidence.
A Synthetic Data Engineer in St. Louis earns a median of $149,000 in 2026. That is 10% below the national average. The range runs from $113,000 to $194,000, and where you land depends on your experience, your skills, and how well you negotiate. Synthetic data engineering is a rapidly emerging specialty where salaries are driven by expertise in generative models for data augmentation.
Salary range
Tap to place your salary
How St. Louis compares
St. Louis, MO
$149,000
Cost of living: 10% below average
National Average
$165,000
St. Louis is $16,000 below
What you should know
The Synthetic Data Engineer 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. Synthetic data engineering is a rapidly emerging specialty where salaries are driven by expertise in generative models for data augmentation. Experience with privacy-preserving data generation for regulated industries like healthcare and finance commands 15 to 25% premiums. Knowledge of differential privacy and statistical validation of synthetic datasets is highly valued.
Junior synthetic data engineers earn $125,000 to $148,000. Engineers with 2 to 4 years of specialized experience reach $165,000 to $215,000. Senior engineers and technical leads earn $220,000 to $290,000, while directors of synthetic data programs at large enterprises can command $300,000 to $380,000. 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. Startups in the synthetic data space offer equity packages of 0.1 to 0.5% that can be worth significantly more than base salary if the company succeeds. Established tech firms offer RSUs worth 20 to 35% of base salary plus bonuses of 10 to 20%. 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 $149,000, 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 Synthetic Data Engineers in St. Louis runs from $113,000 to $194,000. 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.