Unstructured Data Engineer.
St. Louis.
$137,000
median salary, 10% below the national average
$104,000 to $180,000. Updated for 2026.
The numbers.
Everything you need to negotiate with confidence.
Unstructured Data Engineer pay in St. Louis ranges from $104,000 to $180,000 in 2026. The median is $137,000, 10% below the national average. St. Every dollar in that range is negotiable if you come prepared.
Salary range
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How St. Louis compares
St. Louis, MO
$137,000
Cost of living: 10% below average
National Average
$152,000
St. Louis is $15,000 below
What you should know
Before you negotiate a Unstructured Data Engineer offer in St. Louis, understand the terrain. 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. Unstructured data engineers specialize in processing text, images, audio, and video at scale for AI applications. Salary is driven by the diversity of data types handled and the scale of processing pipelines. Engineers with experience in document parsing, OCR systems, and multimedia processing for LLM training earn 10 to 20% premiums over structured data specialists.
Junior unstructured data engineers earn $115,000 to $135,000. Engineers with 3 to 5 years of multimedia data pipeline experience reach $152,000 to $200,000. Senior engineers and platform leads earn $205,000 to $270,000, while staff engineers and directors of data processing infrastructure can command $280,000 to $360,000. 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. Tech companies offer equity of 15 to 25% of base salary with standard vesting schedules. Annual bonuses range from 10 to 15%. Some firms provide compute credits and tool budgets of $5,000 to $15,000 for experimenting with new unstructured data processing technologies. 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 $137,000, 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 Unstructured Data Engineers in St. Louis runs from $104,000 to $180,000. 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.