As of March 01, 2025, the average annual salary for a Software Engineer III in O Fallon, MO is $127,499. Salary.com reports that pay typically ranges from $115,855 to $140,017, with most professionals earning between $105,254 and $151,414.
| Annual Salary |
Monthly Pay |
Weekly Pay |
Hourly Wage |
|
| 75th Percentile | $144,199 | $12,017 | $2,773 | $69 |
| Average | $131,307 | $10,942 | $2,525 | $63 |
| 25th Percentile | $119,315 | $9,943 | $2,295 | $57 |
An entry-level Software Engineer III with under 1 year experience makes about $118,117. With less than 2 years of experience, a mid-level Software Engineer III makes around $118,910. After 2-4 years, the Software Engineer III pay rises to about $120,496. Those senior Software Engineer III with 5-8 years of experience earn roughly $126,270, and those Software Engineer III having 8 years or more experience are expected to earn about $129,324 on average.
| Levels | Salary |
|---|---|
| Entry Level Software Engineer III | $118,117 |
| Intermediate Level Software Engineer III | $118,910 |
| Senior Level Software Engineer III | $120,496 |
| Specialist Level Software Engineer III | $126,270 |
| Expert Level Software Engineer III | $129,324 |
| Entry Level | 10% |
| Mid Level | 9% |
| Senior Level | 8% |
| Top Level | 4% |
| Experienced | 2% |
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Each competency has five to ten behavioral assertions that can be observed, each with a corresponding performance level (from one to five) that is required for a particular job.
Analysis: Analysis is the process of considering something carefully or using statistical methods in order to understand it or explain it.
JavaScript: Using JavaScript in the development and maintenance of Web-based application systems.
Software Engineering: Software engineering is the application of engineering to the development of software in a systematic method. Notable definitions of software engineering include: "the systematic application of scientific and technological knowledge, methods, and experience to the design, implementation, testing, and documentation of software"—The Bureau of Labor Statistics—IEEE Systems and software engineering - Vocabulary "The application of a systematic, disciplined, quantifiable approach to the development, operation, and maintenance of software"—IEEE Standard Glossary of Software Engineering Terminology "an engineering discipline that is concerned with all aspects of software production"—Ian Sommerville "the establishment and use of sound engineering principles in order to economically obtain software that is reliable and works efficiently on real machines"—Fritz Bauer
| Skill | Salary | Demand |
|---|---|---|
|
Open Source
|
$132,599 |
4%
|
|
Container
|
$131,324 |
3%
|
|
Innovation
|
$131,324 |
3%
|
|
Kubernetes
|
$131,324 |
3%
|
|
Python
|
$130,049 |
2%
|
|
AWS
|
$130,049 |
2%
|
