Principal Software Engineer Jobs in O'Fallon, IL (138)
Experienced eCommerce Buyer - $75-99K Salary!
Rural King Supply
O Fallon, IL
$75 - $99 / hour
Investment Real Estate – Acquisition Agent (Licensed)
New Western
St. Louis, MO
$66.7k / year
Licensed Acquisition Agent - Investment Real Estate
New Western
St. Louis, MO
$66.7k / year
Hospice LPN
Residential Home Health and Hospice
Glen Carbon, IL
New
Medical Assistant
ChenMed
St. Louis, MO
New
Hospitality
F-15 Mission Systems Integration Architect
BOEING
BERKELEY, MO
New
Health Insurance
$119.9k - $162.2k / year
F-15 Mission Systems Software Engineers (Associate, Experienced, and Senior)
BOEING
BERKELEY, MO
New
Health Insurance
$86.7k - $117.3k / year
EA-18G Mission Systems Avionics Manager
BOEING
BERKELEY, MO
New
Health Insurance
$129.2k / year
Lead Hardware Systems Engineer – Fighters Mission Systems
BOEING
BERKELEY, MO
New
Health Insurance
$143.7k - $194.4k / year
T-7A Mission Systems Technical Lead Engineer
BOEING
BERKELEY, MO
New
Health Insurance
$119.9k - $162.2k / year
Senior Core Mission Systems Engineer (Level 4 or 5)
BOEING
BERKELEY, MO
New
Health Insurance
$119.9k - $162.2k / year
Navigation Lab Electrical Engineer 4 - Flight Sim Labs
BOEING
BERKELEY, MO
New
Health Insurance
$119.9k - $162.2k / year
Physician / Emergency Medicine / Missouri / Permanent / Wound Care Physician - St. Louis, MO Job
Skilled Wound Care
St. Louis, MO
New
$250k / year
Principal Solutions Engineer (US West Remote)
Wiz
🌎 Remote
Remote
Dental Insurance
Vision Insurance
Parental Leave
$128k - $160k / year
Student Clerk
IMEG Corp
St Louis, MO
Part-Time
PTO
Dental Insurance
Vision Insurance
Flexible Schedule
Education
Account Manager, Software Sales
ProSight Financial Association
St Louis, MO
New
Business Development Representative
Equifax
St Louis, MO
New
401(k)
Client Success Partner
SpotOn: Corporate
St Louis, MO
New
401(k)
Dental Insurance
Vision Insurance
Education
$2,000 / week
Solutions Architect, AGS US Auto-MFG Commercial Sales - Solutions Architecture
Amazon
Edwardsville, IL
Eco-Friendly
Senior Software Developer (Scrum Master)
D&G Support Services
Scott Air Force Base, IL
Part-Time
PTO
Flexible Schedule
Sr. Systems Engineer (ETL-Informatica)
D&G Support Services
Scott Air Force Base, IL
Part-Time
PTO
Flexible Schedule
Senior Principal Software Engineer
BAE Systems
🌎 Remote
Remote
Diversity Leader
Dental Insurance
Vision Insurance
$126.6k - $215.3k / year
Structural Engineering Lead - Bridge Design
Lochmueller Group
St Louis, MO
Part-Time
Hospitality
Health Insurance
$90k - $120k / year
Mechanical Design Engineer (December 2025- New Graduate)
IMEG Corp
St Louis, MO
New
Part-Time
PTO
Dental Insurance
Vision Insurance
Flexible Schedule
Education
Production Engineer
Messer
Hartford, IL
Senior Engineer- New Product Development
Watlow
St Louis, MO
Vision Insurance
Education
Parental Leave
Senior Project Architect
New Ground
St Louis, MO
New
Senior Project Architect
McBride Homes
St Louis, MO
New
$55k - $65k / year
Sr. Systems Engineering Lead
CGS Federal (Contact Government Services)
St Louis, MO
Hospitality
401(k)
Dental Insurance
Vision Insurance
$90k - $120k / year
Senior Mechanical Engineer - HVAC
Express Employment International
St Louis, MO
New
Dental Insurance
$100k / year
Lead Systems Engineer - Java/ProC - Production Support
Enterprise Mobility
St Louis, MO
New
401(k)
Project Architect
PGAV Destinations
St Louis, MO
New
Principal Engineer- Java Business Process Model (JBPM)
Verizon
🌎 Remote
Remote
Hybrid
Parental Leave
$124k - $231k / year
Job Description
Working as a Principal Software Engineer in O'Fallon, IL
There are 138 Principal Software Engineer opportunities available in O'Fallon, IL all with unique requirements.
The Principal Software Engineer automates the software build and delivery process, increases the engineering team's efficiency, and improves overall quality by defining the technical standards for our development and deployment tools. He/She examines existing technologies at an organization to determine which ones can benefit our products and solutions, evaluates emerging technologies aimed at simplifying software engineering tasks (e.g. code generation, refactoring), and then works with those efforts to make best use of them in Microsoft's internal development efforts.
Principal Software Engineer jobs near O'Fallon, IL
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