242 senior software developer jobs at 98 companies in Breese, IL
5d
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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
5d
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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
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.
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, ability to obtain U.S. security clearance (Secret), experience with mission/safety-critical systems, agile experience, strong problem solving and leadership skills.
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
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
1mo
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Senior Embedded Software Engineer (114786)
Bridgeton, Missouri, United States
$93k-$126k/yr HybridFull Time
5+ YOE5+ years experience developing embedded software using C/C++/C#/Java, BS in CS or CE, experience with embedded hardware, Linux/Windows, GIT, strong communication and problem-solving skills.
C, C++, C#, Java, Linux, Windows, GIT
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 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
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
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
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
2mo
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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
1mo
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Sr. Engineer, Software - Archimedes
St. Louis or Brentwood or Alaska or Arizona or Arkansas or California or Connecticut or Delaware or Hawaii or Idaho or Louisiana or Maine or Massachusetts or Michigan or Mississippi or Montana or Nebraska or Nevada or New Mexico or New York or North Carolina or North Dakota or Oregon or Rhode Island or South Carolina or South Dakota or Texas or Utah or Vermont or Washington or West Virginia or Wyoming or United States
HybridFull Time
8+ YOEBachelor's in CS or related; 8+ years software engineering experience (5+ years with C#, .NET, React); experience with cloud-native, APIs, microservices, CI/CD, Git, Azure; technical leadership and mentoring experience.
C#, .NET, ASP.NET Core, React, TypeScript, JavaScript, REST APIs, GraphQL, Webhooks, API Management, Microsoft Azure App Services, Microsoft Azure Functions, Microsoft Azure Container Apps, Microsoft Azure Kubernetes Service (AKS), Microsoft Azure Storage, Microsoft Azure Databricks, Microsoft Azure Data Lake Storage Gen2, Microsoft Azure Synapse Analytics, Microsoft SQL Server, PostgreSQL, Microsoft Azure DevOps, GitHub Actions, CI/CD, Infrastructure as Code, Retrieval-Augmented Generation (RAG), Microsoft Azure OpenAI, Microsoft Azure AI Services, Intelligent Automation, Agent-Based Solutions, OWASP, OAuth2, OpenID Connect, DevSecOps, Git, Azure Repos, GitHub, TFS, Jira, Unix/Linux shell scripting
5h
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Software Engineer Senior Staff (TS/SCI Required)
St. Louis, Missouri, United States
OnsiteFull Time
7+ YOECurrent TS/SCI and ability to obtain a Counterintelligence polygraph; bachelor's degree plus 9 years or master's degree plus 7 years related experience. Requires cloud, microservices, containerization, CI/CD, scripting, and Linux expertise.
AWS, Azure, Google Cloud, Docker, Kubernetes, OpenShift, GitLab CI, Jenkins, Linux
4w
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Senior Software Engineer and Consultant
Saint Louis, Missouri, United States
RemoteFull Time
5+ YOE5+ years .NET and SQL Server experience, T-SQL and JavaScript proficiency, strong OOP and relational database knowledge, debugging/testing skills; Bachelor\u0002s in CS preferred.
Microsoft .NET, Microsoft SQL Server, T-SQL, JavaScript, Blazor, jQuery, REST API, XML, EDI
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
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