234 senior software developer jobs at 100 companies in Carlinville, IL
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Software Engineer (Experienced, Senior)
Hazelwood or Berkeley
$127k-$217k/yr OnsiteFull Time
5+ YOEBachelor's degree, 5+ years of C/C++ and software development lifecycle experience. Real-time embedded software, safety-critical development, Secret clearance eligibility, and U.S. Person status required.
C, C++, Python, C#, Assembly Language, GreenHills Integrity, Jira, ClearCase, Git, Microsoft?, Vehicle Management System (VMS), Software Development Lifecycle (SDLC), MIL-HDBK-516C, MIL-STD-882E, JSSSEH, DO-178C
1w
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Software Engineer (Experienced, Senior)
Hazelwood or Berkeley
$127k-$217k/yr OnsiteFull Time
5+ YOEBachelor's degree and 5+ years of C/C++ and software development lifecycle experience required. Preferred: real-time embedded, safety-critical, Agile, clearance, and aerospace software experience.
C, C++, Python, C#, Assembly Language, GreenHills Integrity, Jira, ClearCase, Git, Agile, MIL-HDBK-516C, MIL-STD-882E, JSSSEH, DO-178C, Real Time Operating Systems
2d
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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 Engineer (Experienced or Senior)
Hazelwood or Berkeley or Saint Louis
$127k-$217k/yr OnsiteFull Time
5+ YOEBachelor's degree, 5+ years full‑stack software development, U.S. person able to obtain U.S. Secret security clearance, experience with mission/safety‑critical systems, agile and leadership experience.
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Software Developer Engineer (Experienced or Senior)
Hazelwood or Berkeley or Saint Louis
$127k-$217k/yr OnsiteFull Time
5+ YOEBachelor's degree, 5+ years full stack software development, ability to obtain U.S. security clearance (Secret), experience with mission/safety-critical systems, agile experience, strong problem solving and leadership skills.
1d
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Senior Fullstack Software Engineer
St. Louis, Missouri, United States
$128k-$179k/yr RemoteFull Time
1+ YOE2+ MgmtRequires 1 year of experience, with 4 years preferred. Requires Java and cloud-native development; preferred experience includes Spring Boot, Next.js or React.js, JavaScript, TypeScript, microservices, GCP, and Agile development.
Java, Google Cloud Platform, Next.js, React, TypeScript, RESTful APIs, Spring Boot, JavaScript, React.js
2mo
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Sr. Software Engineer
Hazelwood, Missouri, United States
$82k-$115k/yr HybridFull Time
7+ YOESenior-level software engineer with 7+ years full stack experience, AWS, IaC, microservices, and data governance.
AWS, Docker, Kubernetes, Terraform, CloudFormation, AWS CDK, Python, SQL, PostgreSQL, Oracle
2w
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Software Engineer
St. Louis, Missouri, United States
$100k/yr HybridFull Time
5+ YOE5+ years software development with cloud/data engineering on Microsoft Azure, production ownership, Python/TypeScript, SQL/Snowflake, Terraform, Git, strong communication and problem-solving.
Microsoft Azure, Azure Functions, Python, TypeScript, Node.js, Snowflake, SQL Server, T-SQL, SQL, Terraform, Datadog, Git, Microsoft Graph, Checkov, Event Grid, Service Bus, VNet, OAuth 2.0, PGP, S/MIME
2mo
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Senior Software Engineer - News Engineering (Elasticsearch)
New York or St. Louis
$114k-$190k/yr HybridFull Time
Strong experience with Java and Python on Linux; real-time systems; IP-based protocols; unit testing; Elasticsearch; cloud infrastructure; container orchestration; strong problem-solving and independent communication.
Java, Python, Linux, Elasticsearch, Kubernetes, Terraform, GitLab CI/CD, GitHub Copilot
1mo
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Software Engineer
Denver or Springfield or Sterling or St. Louis
$82k-$172k/yr OnsiteFull Time
5+ YOEBachelor's in CS or related, 5+ years software development experience, Java and/or Python proficiency, experience with web frameworks and databases, TS/SCI clearance with polygraph required, Agile and secure coding experience.
Java, Python, ArcGIS, GeoServer, OpenLayers, Leaflet, Cesium, Docker, Kubernetes, CI/CD
19h
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Senior Software Engineer (Modern .NET)
Denver or Kansas City or Chicago or Cincinnati or St. Louis or Florida or Iowa or Nebraska or Tennessee
$120k-$160k/yr RemoteFull Time
6+ YOERequires 6+ years of software engineering experience, C#/.NET and ASP.NET Core, REST APIs, relational databases, SQL Server, EF Core, testing, cloud deployment, CI/CD, and Git workflows.
C#, .NET, ASP.NET Core, EF Core, SQL Server, Azure, React, TypeScript, REST APIs, CI/CD, Git, Angular, Vue, Figma, Terraform, Bicep, Culture Index, Microsoft Windows
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
3mo
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Senior Developer
St. Louis, Missouri, United States
OnsiteFull Time
8+ YOEBachelor’s or Master’s in CS/Engineering; 8+ years mobile development (Android/iOS); 3+ years Kotlin Multiplatform; strong architecture, KMP, and cross-platform data/UI design; CI/CD; device-connected apps; AI-assisted development experience.
Kotlin, Kotlin Multiplatform, Android, iOS, SwiftUI, Jetpack Compose, Gradle, CI/CD, Dependency Injection, BLE, Wi-Fi, TCP, KMP-iOS interoperability
1w
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Software Developer II - Utility Billing Software (Front End, Angular)
Cedar Rapids or Lake Saint Louis or Mandan
HybridFull Time
5+ YOE5+ years software development experience; proficiency with Angular/TypeScript, Java, RDBMS, cloud and container technologies; automated testing and Git; Bachelor's in CS or equivalent preferred.
Angular, TypeScript, Java, Postgres, Oracle, AWS, Kubernetes, Spring Boot, Kafka, Cassandra, Git, JIRA, Confluence, Bitbucket, Bamboo, SQL, iVUE Connect, Agentic AI
1mo
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Senior Software Engineer Applied AI
Springfield, Illinois, United States
RemoteFull Time
7+ YOE7+ years building and operating production backend systems, strong Python skills, production LLM/generative AI experience, distributed cloud systems experience, ML lifecycle proficiency, and disciplined data handling in regulated environments.
Python, AWS, LLMs, vector search, AI coding assistants
1mo
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Sr Software Developer - API Integration
Creve Coeur or St. Louis
$110k-$130k/yr HybridFull Time
5+ YOE5+ years software development experience; hands-on Power Apps/Power Automate and Power Platform, REST/JSON API integration, Microsoft Azure, CI/CD and DevOps, Dataverse, Infrastructure as Code, and data mapping; knowledge of data privacy.
Microsoft Power Platform, Power Apps, Power Automate, Dataverse, Microsoft Azure, RESTful APIs, JSON, CI/CD, DevOps, Infrastructure as Code, ServiceNow, RPA, Microsoft SharePoint
2mo
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Senior Software Engineer - Java Full Stack Engineer
O'Fallon, Missouri, United States
$115k-$184k/yr OnsiteFull Time
7+ YOE7+ years of software development experience; Java 8+/Spring/Hibernate; Angular/React frontend; AWS cloud; PCI/GLBA compliance; strong communication.
Java, Spring, Hibernate, Angular, React, AWS, SQL, NoSQL, Web Services, Tomcat, Maven, Gradle, Jenkins, JDBC
1mo
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Senior Software Engineer - GoLang and Python
St. Louis or Missouri or Minnesota or Nebraska or Kansas or Iowa
$88k-$157k/yr OnsiteFull Time
Extensive experience with Python and Go, API design (REST,gRPC), GKE/GCP, microservices, CI/CD, DevOps, IaC (Terraform), SQL, Git, observability, messaging (Kafka, Pub/Sub), and integrating AI/MCP into systems.
Python, GoLang, REST, gRPC, Google Kubernetes Engine, Google Cloud Platform, Model Context Protocol (MCP), Datadog, OpenTelemetry, SQL, Git, GitHub, GitLab, Terraform, Apache Kafka, Google Pubsub, AWS SNS/SQS, Istio
3mo
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Lead Software Engineer (.Net)
Saint Louis, Missouri, United States
$112k-$141k/yr HybridMultiple Commitments Available
5+ YOE5+ years in software development; 1–2 years in technical leadership; strong .NET Core/C#, Azure, NoSQL/Relational DB, CI/CD, REST APIs; able to mentor and lead architecture efforts.
.NET Core, C#, Microsoft Azure, Cosmos DB, MongoDB, Docker, Kubernetes, React, Angular, Vue.js
3mo
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Principal Software Engineer
Atlanta or Boston or Morristown or Plano or St. Louis or St. Petersburg or Hyderabad
HybridFull Time
8+ YOE8+ years backend software engineering; degree or equivalent; cloud, IaC, CI/CD; APIs; strong communication; leadership.
TypeScript, Node.js, PostgreSQL, Angular, AWS, Terraform, Elasticsearch, CI/CD, SASS
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