Top 408 Software engineer Jobs in Saint Charles Mo

Exploitation Specialist/GDAT Software Engineer
Leidos —St. Louis, MO
- $73,450 - $132,775 a year
- Full-time
- Mid-level
- Office
- Windows
Firmware Engineer
TRUE MANUFACTURING GROUP —O'Fallon, MO
- Full-time
- Background check
- Computer Science
- Office
13d
Associate Software Engineer
Boeing —Maryland Heights, MO
- $82,000 - $94,230 a year
- Computer science
- Computer Science
- Software troubleshooting
- Health savings account
- Disability insurance
Mid-Level Backend Software Engineer
Leidos —St. Louis, MO
- $87,100 - $157,450 a year
- Full-time
- Azure
- Computer Science
- System design
Software Engineer
Boeing —Maryland Heights, MO
- $105,000 - $128,140 a year
- Computer science
- Computer Science
- 5 years
- Health savings account
- Disability insurance
8d
Experienced Software Development Engineer
Boeing —Hazelwood, MO
- $126,650 - $171,350 a year
- Computer science
- Computer Science
- Bachelor of Science
- Health savings account
- Disability insurance
Software Engineer II- Bridgeton, MO
D&Z Federal Division —Bridgeton, MO
- $42 - $44 an hour
- Computer science
- Computer Science
- System design
Quick Apply
BackEnd Software Engineer (Experienced or Senior)
Boeing —Berkeley, MO
- $126,650 - $217,350 a year
- Computer science
- Computer Science
- 5 years
- Health savings account
- Disability insurance
8d
Junior Developer
Secure24 —Earth City, MO
- $58,000 - $65,000 a year
- Full-time
- Experience equivalent to degree accepted
- Linux
- In-person
- Health insurance
- Dental insurance
Quick Apply
6d
Software Engineer I
Mastercard —O'Fallon, MO
- $72,000 - $115,000 a year
- Online Application
- Computer science
- Computer Science
- System design
- Paid jury duty
- Health savings account
1d
Mid-Level Software Engineer
Leidos —St. Louis, MO
- $87,100 - $157,450 a year
- Full-time
- Azure
- Computer Science
- Mid-level
12d
Software Systems Engineer
Boeing —Hazelwood, MO
- $135,000 - $165,000 a year
- Software troubleshooting
- Mid-level
- Bachelor's degree
- Health savings account
- Disability insurance
Experienced Software Development Engineer
Boeing —Berkeley, MO
- $126,650 - $171,350 a year
- Computer science
- Computer Science
- Bachelor of Science
- Health savings account
- Disability insurance
Associate Embedded Software Engineer
Boeing —Berkeley, MO
- $99,450 - $134,550 a year
- Computer science
- Computer Science
- Bachelor of Science
- Health savings account
- Disability insurance
12d
Lead Software Engineer, Phantom Works
Boeing —Berkeley, MO
- $160,650 - $217,350 a year
- Computer science
- Computer Science
- Bachelor of Science
- Health savings account
- Disability insurance
Experienced Software Engineer
Boeing —Hazelwood, MO
- $126,650 - $171,350 a year
- Computer science
- Computer Science
- 5 years
- Health savings account
- Disability insurance
Cloud Engineer
Leidos —St. Louis, MO
- $87,100 - $157,450 a year
- Full-time
- Bachelor of Science
- Writing skills
- System design
Lead Software Test & Verification Engineer, Phantom Works
Boeing —Saint Charles, MO
- Computer science
- Computer Science
- 5 years
- Health savings account
- Disability insurance
Lead Software Test & Verification Engineer, Phantom Works
Boeing —Berkeley, MO
- Computer science
- Computer Science
- 5 years
- Health savings account
- Disability insurance
Lead Site Reliability Engineer
Mastercard —O'Fallon, MO
- $122,000 - $207,000 a year
- Online Application
- Computer science
- Computer Science
- DevOps
- Paid jury duty
- Health savings account

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Exploitation Specialist/GDAT Software Engineer

Leidos -
St. Louis, MO

Apply Now

Job Details

Full-time
$73,450 - $132,775 a year

Qualifications

Software engineering
Application systems
Engineering development testing
Visual Basic
Windows
UI design
Quality assurance experience within IT

Full Job Description

Description

Leidos has an exciting opportunity for an Exploitation Specialist/GDAT Software Engineer to join our team in St. Louis, MO.

This work requires skills and knowledge to modernize applications to facilitate production operations for customer.

These resources will not be making major performance enhancements on GDATM Tool. Instead, they shall provide the necessary skills and experience to support customer in completing minor improvements in software functionality necessary to support routine maintenance.

Primary Responsibilities

Support end-users and ensure they possess the necessary capabilities to fulfill mission-critical objectives. These objectives are multifaceted, as the GDAT-M team not only supports customer goals but also those of ASG collaborators, other entities, and co-producer contractors. These roles involve sustaining and deploying the Geospatial Data Analysis Tool-Modernized (GDAT-M) application, developed by the customer. GDAT-M serves the customer, ASG collaborators, and co-producer contractors. It is a leading desktop application responsible for geo-positioning and validation of national products. The GDAT-M team is focused on delivering GEOINT content from relevant sensors. The goal is to modernize tools, enabling customers to transition from MS-Access to PostgreSQL databases, following a bi-annual release cycle.

Assist Government GDAT Team in implementing minor GDAT application enhancements.
Facilitate efficient testing processes.
Oversee security and vulnerability testing/documentation.
Accelerate modernization for NSG/ASG customers.

Basic Qualifications

BA degree with 4–8 years of relevant experience or Master's degree with 2–6 years of relevant experience.
1–3 years of User Interface Design experience.
Proven expertise in Web Data Hosting.
1–3 years of experience as .NET Visual Basic programmers (application engineers).
1–3 years of experience in Windows Desktop application development.
1–3 years of Software Test Engineering experience.
Active TS/SCI clearance with eligibility for CI Poly approval.

Preferred Qualifications

Familiarity with Amazon CLI and Amazon Cloud Access Portal.
Experience in creating/utilizing small loading scripts.
Active TS/SCI CI Poly clearance.

At Leidos, we don’t want someone who "fits the mold"—we want someone who melts it down and builds something better. This is a role for the restless, the over-caffeinated, the ones who ask, “what’s next?” before the dust settles on “what’s now.”

If you’re already scheming step 20 while everyone else is still debating step 2… good. You’ll fit right in.

Original Posting:

January 13, 2026

For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Pay Range:

Pay Range $73,450.00 - $132,775.00

The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

About Leidos

Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com.

Pay and Benefits

Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at www.leidos.com/careers/pay-benefits.

Securing Your Data

Beware of fake employment opportunities using Leidos’ name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system – never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at [email protected].

If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission.

Commitment to Non-Discrimination

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.

Apply Now

Refine Your Search

software engineer jobs in saint charles mo

Exploitation Specialist/GDAT Software Engineer

Firmware Engineer

Associate Software Engineer

Mid-Level Backend Software Engineer

Software Engineer

Experienced Software Development Engineer

Software Engineer II- Bridgeton, MO

BackEnd Software Engineer (Experienced or Senior)

Junior Developer

Software Engineer I

Mid-Level Software Engineer

Software Systems Engineer

Experienced Software Development Engineer

Associate Embedded Software Engineer

Lead Software Engineer, Phantom Works

Experienced Software Engineer

Cloud Engineer

Lead Software Test & Verification Engineer, Phantom Works

Lead Software Test & Verification Engineer, Phantom Works

Lead Site Reliability Engineer

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