Expert Systems Engineer / Architect salary in St. Louis, MO
Based on 149 certified H-1B filings at DOL wage level IV in the St. Louis, MO-IL metro area, FY2025–FY2026. Includes Maryland Heights, Chesterfield, Saint Louis, O'fallon, Creve Coeur.
Salary range
| Percentile | Salary |
|---|---|
| 10th | $121,555 |
| 25th | $121,555 |
| 50th (median) | $123,240 |
| 75th | $150,946 |
| 90th | $175,992 |
Salary by year
Median salary
Filings per year
Show as table
| Fiscal year | Median | P25 | P75 | Filings |
|---|---|---|---|---|
| FY2020 | $105,339 | $97,900 | $119,805 | 100 |
| FY2021 | $111,084 | $102,086 | $124,700 | 73 |
| FY2022 | $122,776 | $110,240 | $140,000 | 88 |
| FY2023 | $126,023 | $110,240 | $163,500 | 67 |
| FY2024 | $122,470 | $122,470 | $145,750 | 76 |
| FY2025 | $123,240 | $121,555 | $151,361 | 94 |
| FY2026 | $125,000 | $123,240 | $150,298 | 55 |
Cost of living
St. Louis's median expert Systems Engineer / Architect salary of $123,240 is worth about $129,600 at national average prices.
Source: BEA Regional Price Parities, 2024 (U.S. = 100; St. Louis = 95.1).
Compared with all workers here
All Computer Systems Engineers/Architects in the St. Louis, MO area earned a median of $108,450 in May 2025 (7,330 employed). The H-1B median here is $123,240, 14% higher.
Source: U.S. Bureau of Labor Statistics, OEWS metropolitan area estimates. BLS wages include some incentive pay; H-1B figures are base salary.
Employers filing at this level
| Employer | Median | Filings |
|---|---|---|
| Cognizant | $123,240 | 47 |
| Charter Communications | $121,555 | 11 |
| Cigna-Evernorth Services | too few | 8 |
| Nestle Regional Globe Office North America | too few | 8 |
| Bayer | too few | 7 |
| Accenture | too few | 6 |
| Centene Management Company | too few | 4 |
| Equifax | too few | 4 |
| Mastercard | too few | 3 |
| HCLTech | too few | 2 |
Employers with at least 2 filings here. Median shown at 10+ filings.
By experience level
| Wage level | Median | Filings |
|---|---|---|
| Entry-level · Level I | $63,750 | 18 |
| Mid-level · Level II | $82,763 | 238 |
| Senior · Level III | $102,149 | 205 |
| Expert · Level IV | $123,240 | 149 |
Median shown when a level has at least 10 filings.
Minimum H-1B salary by level
| Wage level | Prevailing wage (most common) | Median offered salary | Filings |
|---|---|---|---|
| Entry-level · Level I | $63,357 | $63,750 | 18 |
| Mid-level · Level II | $82,763 | $82,763 | 238 |
| Senior · Level III | $102,149 | $102,149 | 205 |
| Expert · Level IV | $121,555 | $123,240 | 149 |
The prevailing wage is the minimum an employer must pay for this job and area. Amounts vary by county within a metro and by wage source.