Top 195 software engineer Jobs in o'fallon, mo

Systems Integration Developer
Logistics —Chesterfield, MO
- $95,000 - $115,000 a year
- Full-time
- Background check
- Computer science
- Computer Science
- Paid holidays
- Health insurance
Quick Apply
Senior Web Application Developer
CarShield —Saint Peters, MO
- Computer science
- 7 years
- Azure
- Health insurance
- Dental insurance
Quick Apply
Mid-Level Backend Software Engineer
Leidos —St. Louis, MO
- $87,100 - $157,450 a year
- Full-time
- Azure
- Computer Science
- System design
Full Stack Developer Programmer
Secure24 —Earth City, MO
- $60,000 - $90,000 a year
- Full-time
- Mid-level
- Office
- Agile
- Health insurance
- Dental insurance
Quick Apply
Exploitation Specialist/GDAT Software Engineer
Leidos —St. Louis, MO
- $73,450 - $132,775 a year
- Full-time
- Mid-level
- Office
- Windows
Software Engineer ||
Mastercard —O'Fallon, MO
- $92,000 - $147,000 a year
- Online Application
- Computer Science
- Mid-level
- Office
- Paid jury duty
- Health savings account
Software Engineer II
Mastercard —O'Fallon, MO
- $92,000 - $147,000 a year
- Online Application
- Hybrid work
- Computer science
- Computer Science
- Mid-level
- Paid jury duty
- Health savings account
Software Developer
True Manufacturing —O'Fallon, MO
- $80,000 - $95,000 a year
- Full-time
- Microsoft Word
- Background check
- Computer science
- Free parking
- Paid training
Senior Software Engineer
Mastercard —O'Fallon, MO
- $115,000 - $184,000 a year
- Online Application
- Computer science
- Computer Science
- System design
- Paid jury duty
- Health savings account
Software Engineer
Noise Consulting Group, Inc —St. Louis, MO
- $75 - $80 an hour
- Contract
- Hybrid work
- Computer science
- Computer Science
- System design
Quick Apply
Production Support Consultant --JAVA
Fabergent —O'Fallon, MO
- Night shift
- Senior level
Quick Apply
Mid-Level Programmer Analyst
Boeing —Saint Charles, MO
- $114,300 - $139,700 a year
- On call
- Hybrid work
- Writing skills
- Mid-level
- 3 years
- Health savings account
- Disability insurance
Senior Firmware Engineer
True Manufacturing —O'Fallon, MO
- $125,000 - $140,000 a year
- Full-time
- Background check
- Computer Science
- Office
- Paid parental leave
- Health savings account
8d
Senior Software Engineer - Java Full Stack Engineer
Mastercard —O'Fallon, MO
- $115,000 - $184,000 a year
- Online Application
- Computer science
- 7 years
- Computer Science
- Paid jury duty
- Health savings account
Senior Software Developer
Resource America Information Technology —Saint Peters, MO
- Computer Science
- 5 years
- JavaScript
Epicor Software Programmer
Patriot Machine Inc —Saint Charles, MO
- Full-time
- 5 years
- Mid-level
- SQL
- Paid holidays
- Health insurance
Quick Apply
Software Developer
Patriot Machine Inc —Saint Charles, MO
- Full-time
- 5 years
- Mid-level
- SQL
- Paid holidays
- Health insurance
Quick Apply
Software Development Engineer in Test (SDET) II
Mastercard —O'Fallon, MO
- $92,000 - $147,000 a year
- Online Application
- Hybrid work
- Computer science
- Computer Science
- Mid-level
- Paid jury duty
- Health savings account
Software Engineer
HSTechnologies —Chesterfield, MO
- Email
- Computer science
- Azure
- Computer Science
Application Programmer
Patriot Machine Inc —Saint Charles, MO
- Full-time
- 5 years
- Mid-level
- JavaScript
- Paid holidays
- Health insurance
Quick Apply

I want to receive the latest job alert for software engineer in o'fallon, mo

By signing in to your account, you agree to SimplyHired's Terms of Service and consent to our Cookie and Privacy Policy.

Explore jobs in more locations

software engineer jobs near o'fallon, mo

Systems Integration Developer

Logistics -
Chesterfield, MO

Quick Apply

Job Details

Full-time
$95,000 - $115,000 a year

Benefits

Paid holidays
Health insurance
Dental insurance
401(k)
Paid time off
Vision insurance
Life insurance

Qualifications

Data model design
Performance tuning
Computer science
Systems integration
Power BI
Data visualization software proficiency
Computer Science
Data modeling projects
RESTful API
C#
Business intelligence report generation
Schema design
SQL
Business intelligence tools
Bachelor's degree
Implementing APIs
Developing and maintaining backend systems
Integration with Third-Party Services (system development)
JSON
Back-end integration
Data analytics tools
System tuning
Data performance optimization
Production troubleshooting

Full Job Description

About This Role

CPC Logistics is seeking a Systems Integration Developer to help build, support, and improve systems that connect operational data, internal applications, file-based workflows, legacy tools, and third-party platforms.

This is a hands-on backend role focused on SQL, integrations, automation, and production troubleshooting. This is not a front-end position and not solely a reporting role however, Power BI is an important component of this role and will be required as part of delivering end-to-end solutions.

The primary database platform for this role is Microsoft SQL Server. Experience with DB2 LUW is helpful but not required. Candidates should be comfortable learning DB2 and working with cross-database integrations.

We are looking for someone who enjoys solving real-world integration problems, working across both modern and legacy systems, and building reliable backend processes.

What You’ll Do

Design, build, and support database-driven integration solutions
Write, optimize, and troubleshoot complex SQL queries, views, and stored procedures
Build and maintain REST API integrations between internal and external systems
Develop and support .NET backend services and automation processes
Support file-based workflows including monitoring, validation, imports, exports, and archiving
Work with DB2 databases and ODBC-based integrations
Support and enhance legacy business logic (VBScript, classic ASP, etc.)
Troubleshoot live issues involving databases, APIs, services, files, and integrations
Implement strong logging, validation, retry logic, and defensive error handling
Develop and support Power BI data models and reporting solutions
Partner with internal teams to deliver reliable technical solutions

What We’re Really Looking For

Strong skills in:

SQL Server and database development
Power BI development and data modeling
API integrations
Backend automation
Cross-system troubleshooting
Legacy-to-modern system support
Reliable production code

This role is a strong fit for someone who can follow data from source to destination, understand how systems interact, and solve integration problems independently.

Required Qualifications

Bachelor’s degree in Computer Science, Information Systems, or related field or equivalent technical experience
Strong experience with Microsoft SQL Server in production environments
Advanced SQL skills (joins, CTEs, aggregations, subqueries, tuning)
Experience with Power BI (data models, reports, performance tuning)
Experience building or supporting REST API integrations
Experience with C# and .NET backend development
Experience troubleshooting live production issues
Experience working with JSON, CSV, Excel, and structured data
Experience working with relational databases in production environments
Experience with DB2 or ability to learn DB2 platform nuances
Strong problem-solving skills and ability to work independently
Strong written and verbal communication skills

Preferred Qualifications

Experience with DB2
Experience using ODBC in application development
Experience building Windows Services or background processes
Experience with .NET 8
Experience with structured logging (Serilog or similar)
Experience with VBScript
Experience with classic ASP
Experience with file-processing automation
Experience in logistics, transportation, or operational environments

Technical Environment

You may work with technologies such as:

Primary Database

Microsoft SQL Server

Secondary Database

Development & Integration

C#
.NET 8
REST APIs
JSON / CSV / Excel workflows
Windows Services / Worker Services
ODBC

Legacy Technologies

VBScript
Classic ASP

Reporting & Analytics

Power BI

What Success Looks Like

In this role, success means you can:

Understand how data moves across systems
Build integrations that are stable and supportable
Troubleshoot issues across multiple technologies
Support both modern and legacy systems
Reduce manual work through reliable automation
Write clean, maintainable production code

Why Join CPC Logistics

CPC Logistics is a stable, established transportation logistics company with over 50 years in the industry. We provide a supportive environment where developers can make meaningful contributions and grow their careers over the long term.

This is a smaller development team, which means you’ll have a broad canvas to work with and the opportunity to take ownership of important systems and initiatives. While the role will initially focus on immediate business needs, there is significant opportunity to expand into additional development disciplines over time.

This position offers:

Long-term career stability
Growth opportunity within the role
Broad technical exposure across multiple systems
Ownership of meaningful projects and integrations
Self-directed professional growth
Ability to help shape future platforms and integrations

We are looking for someone interested in a long-term commitment who enjoys learning, growing, and making meaningful technical contributions.

Compensation & Benefits

Salary Range: $95,000 – $115,000 (based on experience)
Potential for Yearly Performance Bonus - If BOD approved
Full Benefits Package (Health, Dental, Vision)
Paid Time Off and Holidays

Work Location & Requirements

This role is onsite in the St. Louis, Missouri area
Hybrid flexibility available on an as-needed basis
Candidates should be local to the St. Louis region or willing to relocate
Candidates must be authorized to work in the United States
We are unable to sponsor visas for this position
No third-party recruiters or agencies

Application Instructions

To help us identify serious candidates, please include a brief note describing your experience with:

SQL Server
Power BI
Backend integrations

Applicants who do not include this information may not be considered.

Pay: $95,000.00 - $115,000.00 per year

Benefits:

401(k)
Dental insurance
Health insurance
Life insurance
Paid time off
Vision insurance

Education:

Bachelor's (Preferred)

Experience:

Microsoft SQL Server: 3 years (Required)
Power BI: 3 years (Required)
RESTful API: 2 years (Required)
C# and .NET: 2 years (Required)
Logistics, Transportation or Operational Environments: 2 years (Preferred)
JSON, CVS, EXCEL: 2 years (Required)

Location:

Chesterfield, MO 63017 (Required)

Ability to Commute:

Chesterfield, MO 63017 (Required)

Work Location: In person

Quick Apply

Refine Your Search

software engineer jobs in o'fallon, mo

Systems Integration Developer

Senior Web Application Developer

Mid-Level Backend Software Engineer

Full Stack Developer Programmer

Exploitation Specialist/GDAT Software Engineer

Software Engineer ||

Software Engineer II

Software Developer

Senior Software Engineer

Software Engineer

Production Support Consultant --JAVA

Mid-Level Programmer Analyst

Senior Firmware Engineer

Senior Software Engineer - Java Full Stack Engineer

Senior Software Developer

Epicor Software Programmer

Software Developer

Software Development Engineer in Test (SDET) II

Software Engineer

Application Programmer

I want to receive the latest job alert for software engineer in o'fallon, mo

Related Searches

Explore jobs in more locations

Job Seeker Tools

Employer Tools

Browse

Stay Connected