Software engineer jobs in O'Fallon, IL and nearby
Software engineer jobs within 25 miles of O'Fallon, IL. Nearby towns and cities are included. Distances are straight-line, not driving distances.
Counted
Hiring at a glance
View jobs- Open jobs
- 114
- Employers
- 60
Advertised starting pay
Not enough comparable pay figures yet.
Employer-advertised starting pay, not employee salaries. Currencies and pay periods stay separate.
Where work happens
- Remote
- 0%0 listings
- Hybrid
- 5%6 listings
- On-site
- 18%21 listings
Not specified: 76% (87 listings)
Employers hiring include LEIDOS, INC. (8), Deloitte US (7), The Boeing Company (6).
Sources & calculation notes
These figures describe the listings on this role page at the date shown, not the whole job market. Listings can change.
Employer-listed minimums from at least 10 listings per currency and pay period. These are advertised starting amounts, not employee salaries. Jobs without a minimum and unusual amounts are excluded.
Hybrid and on-site classifications may be inferred from descriptions. Check the original ad. How we count
About these jobs
Before you apply
Look at the required languages, systems and experience in each ad. Job Bank describes typical education and programming experience for this occupation. A junior title does not mean every employer accepts applicants without experience. Job Bank / Guichet-Emplois.
Guidance reviewed on September 16, 2026.
Based on the dated count above. Listings can change. How we count
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Senior Software Engineer
The Timberline Group
We are looking for a Senior Software Engineer to produce and implement functional software solutions. You will work with upper management to define software requirements and take the lead…
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Salesforce - Software Engineer
The Timberline Group
Position Summary: The Software Engineer - Salesforce is responsible for application development and support of the Salesforce CRM system. They will work closely with IT Business Analysts…
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Software Engineer – Unifier and OPPM
The Timberline Group
In this role, you'll work across multiple modules within a broader software platform, contributing to both maintenance of existing applications and development of new capabilities. This is…
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Associate Software Engineer
Intramotev
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Associate Embedded Software Engineer
Intramotev
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Experienced Embedded Software Engineer
Intramotev
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Senior Software Engineer
Trinity Global Consulting
Develop software solutions by studying information needs; studying systems flow, data usage and work processes; investigating problem areas.
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Senior Software Engineer
LEIDOS, INC.
Great software engineering is about more than writing code, it’s about solving difficult problems, making smart technical decisions, and building capabilities people can depend on. Leidos…
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Software Engineer SME
LEIDOS, INC.
…behind a mission that matters? Leidos is seeking a proficient Software Engineer Subject Matter Expert (SME) to join the Chinook Program supporting an Intelligence Community customer and an…
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Junior Software Engineer
LEIDOS, INC.
Ready to take your software engineering skills beyond the classroom and into a mission where your work has real-world impact? Leidos is seeking a talented Junior Software Engineer to join…
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Mid-Level Software Engineer
LEIDOS, INC.
You’ve built your software engineering foundation. Now it’s time to take ownership of technology that truly matters. Leidos is seeking an accomplished Mid-Level Software Engineer to join…
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Supervisor, Software Engineer - NAIC3 - 1st shift
World Wide Technology Holding, LLC
Passion for Software Development and well-versed in industry trends
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JAVA Software Engineer
Experis USA
Our client, a leader in enterprise technology solutions, is seeking a Senior Software Engineer to join their team. As a Senior Software Engineer, you will be part of the development and…
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Senior Cloud Engineer
SAIC
SAIC is seeking a skilled and motivated Cloud Engineer to join our team in supporting an IT Service Management (ITSM) effort for the U.S. Transportation Command (USTRANSCOM) located at…
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Backend Software Engineer – TS/SCI
Esri
Build Software that Supports Critical National Security Missions.
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Principal Software Engineer
Microsoft
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Senior Software Engineer- Python, Technology Solutions
NISA Investment Advisors, LLC
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Cloud Engineer, Azure
Deloitte US
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Software Engineer III - Full-stack Developer with Anthropic Experience
Deloitte US
Software Engineer III with Agentic AI Experience, AI & Engineering/Engineering as a Service
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Senior DevOps Software Engineer
Global Enterprise Services, LLC
The Senior DevOps Software Engineer will assist in the design, development, testing, deployment, troubleshooting and incident/problem management for the Software Defined Networking (SDN)…
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Senior Server Cloud Engineer
The Gund Company Inc
The Gund Company is seeking a Senior Server Cloud Engineer to design, secure, automate, and continuously improve our enterprise compute, virtualization, identity, backup, and cloud…
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SME Software Engineer Wright-Patterson AFB
Serco USA
If you want to work on cutting-edge DoD programs, Serco has a great opportunity for you! As a SME Software Engineer, you will be supporting the Special Programs Division (AFLCMC/WAG) at…