East Saint Louis • 50 milesRemote · Hybrid · Onsite · Field · All Environments
East Saint Louis • 50 milesRemote · Hybrid · Onsite · Field · All Environments
East Saint Louis • 50 milesRemote · Hybrid · Onsite · Field · All Environments
East Saint Louis • 50 milesRemote · Hybrid · Onsite · Field · All Environments
101 security software engineer jobs at 34 companies in East Saint Louis, IL
3mo
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Security Software Engineer
Swansea or Mascoutah
$81k-$95k/yr HybridFull Time
5+ YOESecurity-focused software engineer with 5+ years in secure SDLC, ability to obtain U.S. Secret Clearance, and CompTIA Security+ certification.
AWS, Nessus, Security Hub, GuardDuty, Config, Trend Micro Deep Security, IAM, Encryption, CI/CD
3mo
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Security Software Engineer
Swansea or Mascoutah
$81k-$95k/yr HybridFull Time
5+ YOESecurity software engineering with AWS, STIGs, IAM, vulnerability remediation, 5+ years, Secret clearance.
AWS, Nessus, GuardDuty, Config, Security Hub, IAM, Trend Micro Deep Security
2mo
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Senior Software Engineer
O'Fallon, Missouri, United States
$115k-$184k/yr OnsiteFull Time
3+ YOEBachelor's degree or equivalent, 3+ years software engineering experience (financial services preferred); strong software engineering knowledge, secure solution delivery, SDLC experience, and strong communication and mentoring skills.
2w
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Software Engineer
Hazelwood, Missouri, United States
OnsiteFull Time
2+ YOEBachelor's in CS/CE/Applied Math,2+ years software engineering experience,proficiency in C#,system-level debugging,strong math/geometry skills,ability to obtain U.S. person/export eligibility and possibly security clearance.
C#, Microsoft Visual Studio, MATLAB, PowerShell
1mo
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Software Engineer
Denver or St. Louis or Sterling or Springfield
$82k-$172k/yr OnsiteFull Time
5+ YOEBachelor's in a technical field, TS/SCI with polygraph, 5+ years software development experience with Java and/or Python, web frameworks, relational/NoSQL databases, Agile experience, and secure coding practices.
Java, Python, ArcGIS, GeoServer, OpenLayers, Leaflet, Cesium, Docker, Kubernetes, CI/CD
3mo
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Senior Software Engineer
O'Fallon, Missouri, United States
$115k-$184k/yr OnsiteFull Time
BS in Computer Science or related technical field; strong Java/Spring, Kafka, C++, JNI experience; software engineering best practices; leadership and problem solving; secure software development; willingness to mentor.
Java, Spring Boot, Kafka, C++, JNI
1d
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Sr. Software Engineer (Data & Application Engineer)
Cincinnati or Atlanta or Hopkins or Chicago or Gresham or Denver or Charlotte or Brookfield or Irving or Earth City
$112k-$131k/yr HybridFull Time
5+ YOEBachelor’s degree or equivalent experience and 5–6 years of relevant experience; strong programming, data engineering, API, cloud, DevOps, database, and secure software development skills.
Java, Python, SQL, JavaScript, Git, CI/CD, DevOps
2w
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Security Engineer- Application Security & Cloud
Chesterfield or Mt Sterling
$87k-$131k/yr OnsiteFull Time
2+ YOE2+ years experience in software/cloud/DevOps or security; bachelor's or equivalent; experience with .NET/Python/Azure; knowledge of secure development, API security, auth, and secrets management.
.NET, Python, Azure, Azure DevOps, GitHub Actions, Docker, Kubernetes, Terraform, Bicep, OWASP Top 10, NIST AI Risk Management Framework
1w
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Software DEVELOPER
O'Fallon, Missouri, United States
$60k-$135k/yr OnsiteFull Time
5+ YOERequires 5–8 years of experience developing enterprise Java applications with Spring Boot, REST APIs, Angular, Node.js, microservices, cloud platforms, DevOps, and secure coding practices.
Java, Spring Boot, REST APIs, Angular, HTML, CSS, JavaScript, jQuery, Node.js, AWS, Azure, PCF, Kubernetes, DevOps, Splunk, CI/CD
1mo
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Software Engineer I
Fenton, Missouri, United States
HybridFull Time
1+ YOE1-2 years relevant experience or equivalent practical experience; knowledge of web frameworks, OOP, REST services, databases, basic cloud (AWS/GCP/OCI), secure coding, and AI-assisted development tools.
GitHub Copilot, Claude, AWS, GCP, OCI, REST
1mo
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Software Development Engineer I
St. Louis, Missouri, United States
$76k-$129k/yr OnsiteFull Time
1+ YOE1+ years JavaScript/TypeScript experience, bachelor's in CS/Math/GIS/STEM, strong OOP and software methodology knowledge, ability to maintain US security clearance, Python experience for geoprocessing preferred.
JavaScript, TypeScript, Python, HTML, CSS, Swift, Kotlin, ReactJS, Vue, Svelte, GIS, REST Web services, SQL, SQL Server, PostgreSQL, Oracle
1w
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Senior Software Developer
O'Fallon, Illinois, United States
$110k-$120k/yr OnsiteFull Time
Bachelor's degree, Java web development, DevSecOps pipeline experience, Secret clearance, and Security+ certification or ability to obtain it immediately after employment.
Java, HTML5, Angular, Spring, RHEL, SQL, Oracle RDBMS, JavaScript, XML, WebLogic, Tomcat, Gradle, Maven, Ant, Python, DevSecOps, Linux, Windows, Apache, Docker, Kubernetes, Git, Jenkins, Artifactory, BASH, Perl, PowerShell, Ansible, Puppet, Chef, Terraform, JUnit, Selenium, Cucumber, Cypress, SonarQube, Fortify, Splunk, React JS, PL/SQL, Kanban, SCRUM, SAFe, DevOps, Jira
1mo
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Software Developer - Advanced (MO, Saint Louis)
St. Louis, Missouri, United States
OnsiteFull Time
Requires RMF knowledge, experience with Python, HTML, CSS, JavaScript, React, Tableau, database development, and secure full‑stack software development; baccalaureate degree required.
Python, HTML, CSS, JavaScript, React, Tableau
19h
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Application Security Engineer IV - AI Harness
Tempe or St. Louis
HybridFull Time
6+ YOEBachelor's degree or equivalent practical experience and 6+ years in application security, secure software engineering, DevSecOps, platform engineering, security operations, or related cybersecurity engineering roles.
Jenkins, GitHub Actions, GitHub Enterprise, Atlassian, Jira, Azure DevOps, Python, SARIF, SBOMs, SAST, SCA, DAST, OWASP Top 10, CWE, CVSS, NIST SSDF, NIST CSF 2.0, SIEM, APIs, Kubernetes, AWS, Azure
2w
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Senior Network Software Engineer
Scott AFB, Illinois, United States
$85k-$93k/yr OnsiteFull Time
4+ YOEActive U.S. citizenship, BS (or MS) with relevant experience, DoD 8750 IAT II/Security+ CE, BLS not required; Python, REST/JSON, Git, Linux experience, routing (BGP/OSPF/ISIS) and Cisco/Juniper familiarity.
Python, XML, Cisco Network Services Orchestrator (NSO), Cisco ASR9K, Juniper MX, REST, JSON, Git, Bitbucket, Linux, Cisco IOS XR, JUNOS, Cisco IOS, YANG, NETCONF, RESTCONF
1mo
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Software Engineer - AI (Top Secret Clearance Required)
Alexandria or Chantilly or Gaithersburg or Saint Louis
OnsiteFull Time
Active Top Secret clearance (TS) required, bachelor’s in CS/Engineering, DoD 8570 IAT Level II/III (e.g., Security+), proficiency in Python, cloud (AWS) architecture, CI/CD, CloudFormation/Terraform, and database development.
Python, GitLab, Jenkins, AWS CloudFormation, Terraform, PostgreSQL, Zabbix, ACAS, Jira, Confluence, RocketChat, AWS, Windows, Linux
1mo
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Web Software Developer
Scott AFB, Illinois, United States
OnsiteFull Time
10+ YOE10+ years experience, DoD Top Secret clearance with SCI eligibility, CompTIA Security+, Node.js/React/JavaScript/HTML, Strapi CMS, AWS, AppStream, Confluence, MS Office proficiency, technical writing, and configuration/change management for government customers.
Node.js, React, AppStream, Confluence, JavaScript, HTML, Strapi, AWS, Microsoft Word, Microsoft PowerPoint, Microsoft Visio, Microsoft Project, Microsoft Excel, ServiceNow, Jira
2mo
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AI-Application Security Engineer
Saint Louis, Missouri, United States
OnsiteFull Time
2+ YOEBachelor's degree,2+ years information security or software development experience,knowledge of application and AI security,experience with SAST/DAST/SCA/API security,AWS,Python,C#,GitHub;CISSP/CSSLP/GIAC preferred.
C#, Angular, Python, AWS, GitHub, SAST, DAST, SCA, API, Mobile, AI Coding assistants, MCPs, CI/CD
1mo
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ENGR SR SOFTWARE DEVT
Utah or Oklahoma or Dallas or Maine or Massachusetts or Wisconsin or South Dakota or Iowa or Montana or New Jersey or Delaware or Washington or New York or St. Louis or Ohio or North Carolina or Missouri or New Hampshire or Alabama or Rhode Island or Indiana or Georgia or South Carolina or Texas or Virginia or Kentucky or Kansas or Arizona or North Dakota or Montgomery County or Michigan or Vermont or Nebraska or Wyoming or Connecticut or Colorado or Mississippi or Idaho or New Mexico or Pittsburgh or Tennessee or Pennsylvania or Minnesota or West Virginia or Arkansas or Florida or New York or Maryland or Kansas City or Louisiana or Illinois
$106k-$146k/yr RemoteFull Time
5+ YOE5+ years software development (or HS+10), experience with Java/C#/Python, SQL/NoSQL, cloud (AWS), web security, and large-scale applications; strong problem solving and Agile experience.
Java, C#, Python, SQL, NoSQL, AWS, Lambda, Step Functions, Linux
1mo
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Intermediate Software Developer
Scott Air Force Base, Illinois, United States
$100k-$105k/yr HybridFull Time
2+ YOEAbility to obtain Secret clearance, Associates degree with 2+ years experience, Security+ required, experience with .NET/C#/C++, cloud, unit testing with Moq/NSubstitute, Agile, and DevOps collaboration.
Moq, NSubstitute, .NET Framework, .NET, C#, C++, Oracle, AWS EC2, Java
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