47 software developer jobs at 23 companies in Chester, IL
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Software Developer 2 (Associate)
O'Fallon, Illinois, United States
HybridFull Time
2+ YOE2+ years software development experience, backend/REST API experience, Java and Azure familiarity, Agile/Jira experience, eligible for U.S. Secret clearance, strong communication and problem-solving skills.
Java, Microsoft Azure, RESTful APIs, Jira
3w
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Software/Web Developer
Saint Louis, Missouri, United States
OnsiteFull Time
3+ YOEBachelor's degree or equivalent experience, 3+ years software/web development, experience with JavaScript/TypeScript/Python/Java/C#/PHP and React/Angular/Vue, RESTful APIs and databases, strong problem-solving and communication.
JavaScript, TypeScript, Python, Java, C#, PHP, React, Angular, Vue, RESTful APIs, SQL, NoSQL, AWS, Azure, Google Cloud, CI/CD, Docker, Kubernetes
1mo
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Mid Software Developer
O'Fallon, Illinois, United States
OnsiteFull Time
2+ YOEMinimum 2 years relevant experience (or HS/GED +6 yrs); experience with AWS (S3, EC2, Lambda), Python, shell scripting, TypeScript, Node.js/Express, ASP.NET Core, C#, Postgres, Kubernetes, Docker, .NET Core, Linux, React, Java, and SQL; AWS Developer certification and TS/SCI clearance preferred; must pass background and drug screening.
Amazon S3, EC2, Lambda, AWS SDK API tools, RDS, Python, Python Flask, Bash, TypeScript, Node.js/Express, ASP.NET Core Web API, Swagger (OpenAPI), C#, Postgres, Kubernetes, Docker, .NET Core, Linux, React, JavaScript, Java, SQL, Gitlab/DevOps, ESRI, Microsoft Word, Microsoft Excel, Microsoft Office
4w
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Lead Software Engineer, Phantom Works
Berkeley or Arlington or Mesa or El Segundo or Colorado Springs or Saint Louis
$198k-$286k/yr OnsiteFull Time
5+ YOEActive Top Secret U.S. clearance and 5+ years leading software architecture, DevSecOps/CI-CD, and Agile delivery for real-time embedded or distributed systems; bachelor’s degree or equivalent.
Git, Jenkins, JIRA, Docker, Kubernetes, AWS GovCloud, Azure Government, Python, Bash, C, C++, MATLAB, Jupyter
1mo
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Web Software Developer
Scott Air Force Base, Illinois, United States
$120k-$160k/yr OnsiteFull Time
10+ YOE10+ years experience, DoD Top Secret with SCI eligibility, CompTIA Security+, experience with Node.js, React, Strapi, AWS, AppStream, Confluence, JavaScript, HTML, CMS, and technical writing.
Node.js, React, AppStream, Confluence, JavaScript, HTML, Strapi, AWS, ServiceNow, Jira, Microsoft Word, Microsoft PowerPoint, Microsoft Visio, Microsoft Project, Microsoft Excel
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
1w
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F-15 Mission Systems Software Engineer (Associate, Experienced, & Senior)
Berkeley, Missouri, United States
$99k-$217k/yr OnsiteFull Time
Bachelor's in engineering or related field, ability to obtain U.S. Secret clearance/U.S. Person status, 2+ years with C/C++/C#/Python/Java/Ada and object-oriented development, experience designing architectures and embedded real-time software, Agile and DevOps exposure.
C, C++, C#, Python, Java, Ada, GitLab, Git Bash, Gradle, Jira, Jenkins, Artifactory, RTOS, Agile, SAFe
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
2mo
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Agentic AI Developer
O'Fallon, Illinois, United States
$99k-$225k/yr HybridFull Time
3+ YOE3+ years software development experience, Python, software design patterns, LLM application development, embeddings/vector DBs/semantic search, agent planning and AI safety knowledge, ability to obtain Secret clearance, Bachelor's degree.
Python, large language models, vector databases, Retrieval-Augmented Generation (RAG)
4w
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Lead Software Engineer, Phantom Works
Berkeley or Arlington or Mesa or El Segundo or Colorado Springs or Saint Louis
$198k-$286k/yr OnsiteFull Time
5+ YOEActive U.S. Top Secret clearance, bachelor’s degree or equivalent, 5+ years leading software/system architecture and DevSecOps/DevOps efforts, Agile team lead experience, CI/CD and config management, scripting (Python/Bash).
Git, Jenkins, JIRA, Collaborator, Beyond Compare, VersionOne, Python, Bash, Docker, Kubernetes, AWS GovCloud, Azure Government, MATLAB, Jupyter, C/C++
2mo
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Agentic AI Developer
O'Fallon, Illinois, United States
$99k-$225k/yr OnsiteFull Time
3+ YOE3+ years software development experience, proficiency with Python, experience with large language models, embeddings, vector databases, AI agents, and ability to obtain a Secret security clearance; bachelor’s degree required.
Python, Retrieval-Augmented Generation (RAG)
1w
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Software Developer / Application & Web Support Lead
Scott Air Force Base, Illinois, United States
OnsiteFull Time
5+ YOE5+ years SharePoint Online/web application development and sustainment; DCWF Work Role 212 proficiency; DoDM 8140.03 foundational qualification; final SECRET clearance; hands-on Power Platform, SharePoint Online, Nintex, Java/Oracle, ColdFusion, .NET/SQL; 508-compliant application delivery.
SharePoint Online, Microsoft Power Platform, Nintex, Java, Oracle, ColdFusion, .NET, SQL, Power BI
1w
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Software Developer / Application & Web Support Lead
Scott Air Force Base, Illinois, United States
$110k-$140k/yr OnsiteFull Time
5+ YOE5+ years SharePoint Online/web application development and sustainment experience; DoDM 8140.03 and residential privileged access qualification; DCWF Work Role 212 or equivalent; Security+ / GSSP / CSSLP preferred; experience with Power Platform, Nintex, Java/Oracle, ColdFusion, .NET/SQL; 508 accessibility experience.
SharePoint Online, Microsoft Power Platform, Power Apps, Nintex, Java, Oracle, ColdFusion, .NET, SQL, Power BI
4d
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Network Software Engineer Lead
Scott AFB, Illinois, United States
$103k-$109k/yr OnsiteFull Time
6+ YOEActive Secret clearance, DoD 8750 IAT II/Security+ CE, BS+8–12yrs or MS+6–10yrs, Python/REST/JSON, Git/Bitbucket, Linux, IP routing (BGP/OSPF/ISIS), Cisco/Juniper experience, NSO familiarity.
Python, XML, Cisco Network Services Orchestrator (NSO), JSON, Git, Bitbucket, Linux, Cisco ASR9K, Juniper MX, Cisco IOS XR, JUNOS, Cisco IOS, YANG, NETCONF, RESTCONF
2w
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ServiceNow Developer with AI agent experience
Marissa, Illinois, United States
$90k-$140k/yr OnsiteFull Time
4+ YOEExperience as a ServiceNow developer with AI/agent development, platform configuration, testing and quality practices; strong documentation, problem-solving, and cross-region collaboration skills.
ServiceNow
1mo
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Sr. Power Platform Developer
Scott AFB, Illinois, United States
$90k-$115k/yr OnsiteFull Time
6+ YOEUS citizen with active Secret security clearance, 6+ years experience, proven experience with Microsoft Power Platform (PowerApps, Power Automate, Power BI), Power BI reporting, ServiceNow desired, strong communication and problem-solving skills.
Microsoft Power Platform, PowerApps, Power Automate, Power BI, ServiceNow
2d
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Information Technology Specialist (Applications Software)
Scott Air Force Base, Illinois, United States
$109k-$142k/yr OnsiteFull Time
1+ YOEOne year of specialized experience equivalent to GS-12 in IT project management, software development, enterprise architecture, cybersecurity, contractor evaluation, and technical team leadership.
Agile, USAJOBS, USA Staffing, USA Hire, Electronic Questionnaire
1w
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Data Engineer - TRANSCOM
Scott Air Force Base, Illinois, United States
$130k-$155k/yr OnsiteFull Time
3+ YOETop Secret clearance required, 3+ years data/software engineering experience, experience with Python, SQL, Spark/Databricks, Palantir Foundry, ML model development and deployment; bachelor’s preferred.
Palantir's MSS Workshop, Slate, Palantir Foundry, Python, SQL, Spark, Databricks, PySpark, scikit-learn, TensorFlow, XGBoost, AWS, Azure
2mo
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Field Engineer
Grand Rivers, Kentucky, United States
OnsiteFull Time
5+ YOEField Engineer with 5-10 years in field environment; strong Excel/Word, scheduling software (P6, RMS, Bluebeam); able to coordinate with subs and project team.
P6, USACE Resident Management Software, Bluebeam, Excel, Word
3w
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AI Engineering Lead
Columbia, Illinois, United States
HybridFull Time
Proven experience integrating LLMs into production, prompt engineering, RAG, Python or .NET (C#), vector DBs, cloud AI services, and leading cross-functional AI programs.
Anthropic Claude, OpenAI, Claude Code, GitHub Copilot, Python, .NET (C#), Pinecone, pgvector, AWS Bedrock, Amazon SageMaker, Twilio, Amazon Connect, IVR
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