Senior Systems Engineer / Architect salary in St. Louis, MO
Based on 205 certified H-1B filings at DOL wage level III 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 | $101,504 |
| 25th | $101,504 |
| 50th (median) | $102,149 |
| 75th | $105,000 |
| 90th | $137,875 |
Salary by year
Median salary
Filings per year
Show as table
| Fiscal year | Median | P25 | P75 | Filings |
|---|---|---|---|---|
| FY2020 | $85,600 | $83,325 | $101,200 | 95 |
| FY2021 | $95,000 | $86,070 | $111,618 | 83 |
| FY2022 | $96,000 | $88,680 | $114,700 | 99 |
| FY2023 | $103,064 | $93,309 | $120,000 | 81 |
| FY2024 | $103,064 | $103,064 | $103,064 | 134 |
| FY2025 | $102,149 | $102,149 | $115,000 | 129 |
| FY2026 | $101,504 | $101,504 | $101,504 | 76 |
Cost of living
St. Louis's median senior Systems Engineer / Architect salary of $102,149 is worth about $107,400 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 $102,149, 6% lower.
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 | $101,504 | 109 |
| Wipro | too few | 9 |
| Infosys | too few | 8 |
| Mastercard | too few | 7 |
| Ameren Services Company | too few | 3 |
| Geminisoft Solutions | too few | 3 |
| Microsoft | too few | 3 |
| IBM | too few | 2 |
| Battery Handling Systems | too few | 2 |
| Brillio | 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.