Software Developer, Systems Software Salary in O'fallon, MO

7 certified H-1B filings

According to TheRealSalaries.com analysis of official US Department of Labor filings (October 2024 - December 2025), the average H-1B salary for Software Developer, Systems Software in O'fallon is $106,920 — 12% below the national median of $121,514.

Section 1
$106,920
Average
$64,152
Min Est.
$192,456
Max Est.
7
Filings
Section 2

Software Developer, Systems Software in Other Cities

Plano, TX
$112,825
32 filings
Franklin, TN
$100,625
12 filings
Alpharetta, GA
$112,268
11 filings
Redmond, WA
$135,334
10 filings
Cincinnati, OH
$100,061
7 filings
New York City, NY
$125,046
6 filings

Other Roles in O'fallon

Senior Software Engineer ($115,532) Lead Software Engineer ($137,598) Software Engineer ($91,590) Software Developer ($94,356) Senior Bizops Engineer ($97,151) Software Developer ($90,576) Principal Software Engineer ($162,920) Technical Lead L1 ($75,056)
Section 3
Source: US Department of Labor LCA Disclosure Data. Updated: Q1 FY2025.