Top 50 Security specialist 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
Cybersecurity Operations Specialist -SIEM Services (Evergreen)
General Dynamics Information Technology —St. Louis, MO
- $128,039 - $173,229 a year
- 6 years
- System design
- Mid-level
Incident Responder / Incident Response Specialist - AI Trainer
DataAnnotation —St. Louis, MO
- $50 - $100 an hour
- Part-time
- Remote
- English
- Mid-level
- Bachelor's degree
- Flexible schedule
Quick Apply
Security Officer Security Clearance Specialist
Allied Universal —Saint Charles, MO
- $26.50 an hour
- Full-time
- 18 years or older
- Customer service
- Pass drug screening
- Paid training
- AD&D insurance
Quick Apply
12d
Associate Industrial Security Specialist
Boeing —Berkeley, MO
- $72,250 - $97,750 a year
- Writing skills
- Mid-level
- Bachelor's degree
- Health savings account
- Disability insurance
10h
HSPD-12: Government Badging & Credentialing Specialist (St. Louis, MO.*)
Citizant Inc —St. Louis, MO
- $42,000 - $46,700 a year
- Full-time
- Administrative experience
- High school diploma or GED
- Organizational skills
- Disability insurance
- Health insurance
Quick Apply
Senior Industrial Security Specialist
Boeing —Berkeley, MO
- $111,350 - $150,650 a year
- Writing skills
- Research
- Bachelor's degree
- Health savings account
- Disability insurance
10h
Security Specialist
Tulk LLC —St. Louis, MO
- $103,000 - $124,000 a year
- Full-time
- 5 years
- Bachelor's degree
- Senior level
Quick Apply
1d
Credentialing Specialist
One Federal Solution —St. Louis, MO
- Customer service
- Mid-level
- Administrative experience
Quick Apply
3d
Technology/Cybersecurity Specialist - Lindbergh Schools
Lindbergh Schools —St. Louis, MO
- From $20.85 an hour
- Full-time
- Classroom
- Research
- Mid-level
12d
Supervisor - Security Specialist
ServiceSource Inc. —St. Louis, MO
- Full-time
- Background check
- Microsoft Excel
- Microsoft Outlook
- Wellness program
- Health savings account
Quick Apply
13d
Security Specialist I
ServiceSource Inc. —St. Louis, MO
- Full-time
- Inventory management
- Office
- High school diploma or GED
- Wellness program
- Health savings account
Quick Apply
Asset Protection Specialist
Home Depot —Florissant, MO
- Mid-level
Security Specialist II
ServiceSource Inc. —St. Louis, MO
- Weekends as needed
- Customer service
- Mid-level
- Office
- Wellness program
- Health savings account
Quick Apply
Target Security Specialist
Target —Florissant, MO
- From $18.25 an hour
- Part-time
- 18 years or older
- High school diploma or GED
- Communication skills
- Flexible schedule
Security Officer Unarmed Patrol Specialist
Allied Universal —St. Louis, MO
- $22.92 an hour
- Full-time
- 18 years or older
- Military
- Computer literacy
- Paid training
- AD&D insurance
Quick Apply
4d
Network Segmentation Testing Specialist
U.S. Bank National Association —St. Louis, MO
- $119,765 - $140,900 a year
- Full-time
- 8 years
- Analysis skills
- Project management
- Paid holidays
- Disability insurance
Security Professional Transit
Allied Universal —St. Louis, MO
- $20.13 an hour
- Full-time
- 18 years or older
- Customer service
- Computer literacy
- Paid training
- AD&D insurance
Quick Apply
Risk Specialist
Focus Financial Partners —St. Louis, MO
- $100,000 - $130,000 a year
- Mid-level
- 3 years
- Analysis skills
10d
Security Specialist (L4) - Arnold, MO
Masego —Arnold, MO
- $106,000 - $116,000 a year
- Full-time
- 11+ years
- Office
- Bachelor's degree
- Health insurance
- Dental insurance
Quick Apply
6d

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security specialist jobs near saint charles mo

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

security specialist jobs in saint charles mo

Exploitation Specialist/GDAT Software Engineer

Cybersecurity Operations Specialist -SIEM Services (Evergreen)

Incident Responder / Incident Response Specialist - AI Trainer

Security Officer Security Clearance Specialist

Associate Industrial Security Specialist

HSPD-12: Government Badging & Credentialing Specialist (St. Louis, MO.*)

Senior Industrial Security Specialist

Security Specialist

Credentialing Specialist

Technology/Cybersecurity Specialist - Lindbergh Schools

Supervisor - Security Specialist

Security Specialist I

Asset Protection Specialist

Security Specialist II

Target Security Specialist

Security Officer Unarmed Patrol Specialist

Network Segmentation Testing Specialist

Security Professional Transit

Risk Specialist

Security Specialist (L4) - Arnold, MO

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