50 net engineer jobs at 26 companies in O'Fallon, IL
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.Net Developer
St. Louis, Missouri, United States
HybridFull Time
Weissman: Designs and manufactures dance costumes and apparel.
4+ YOE4+ years professional experience with Microsoft's .NET technologies, .NET Web Forms, C# or VB.NET, HTML/JavaScript/CSS, and SQL Server; bachelor's degree preferred.
.NET Web Forms, C#, VB.NET, HTML, JavaScript, CSS, jQuery, T-SQL, Microsoft SQL Server, Microsoft IIS, Bootstrap, Foundation, Infor M3, Web Services, AJAX, SOA
FiservNew York Stock Exchange: FI: Provides financial technology and payment processing services to institutions.
4+ YOEMinimum 4 years software development experience; 2+ years with C#/.NET, SQL, and a major cloud platform (AWS/Azure/GCP); experience with CI/CD, DevOps practices, and Agile methodologies.
Senior .Net Engineer - Real Time Product Engineering
St. Louis, Missouri, United States
HybridFull Time
London Stock Exchange GroupLondon Stock Exchange: LSEG: Provides financial market infrastructure and global data analytics services.
5+ YOEBachelor's in CS or related,5+ years software development,proficiency in C# and C++,Git,SQL,knowledge of Agile/DevOps,data structures,algorithms,and strong communication skills.
$112k-$141k/yrHybridMultiple Commitments Available
Safety National: Provides specialty insurance and reinsurance for workers' compensation.
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.
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
Navitus Health Solutions: Transparent pharmacy benefit management and specialty pharmacy provider.
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
BoeingNYSE: BA: Designing and manufacturing commercial aircraft and defense systems.
5+ YOEBachelor's degree, active U.S. Secret clearance (ability to obtain TS/SCI), DoD 8140 foundational qualifications, 5+ years with VB/C#/ .NET, 3+ years SQL, 1+ years unit testing frameworks.
VB, C#, .NET, .NET Framework, SQL, xUnit, nUnit, MSTest, Windows 10, Windows 11, Windows Server, Azure DevOps, Jira, Azure DevOps Pipelines, CI/CD, Microservices, RESTful APIs, C++
BoeingNYSE: BA: Designs and manufactures aircraft, defense systems, and space technology.
5+ YOEBachelor's degree, active U.S. Secret clearance, DoD 8140 foundational qualifications, 5+ years with VB/C#/ .NET, 3+ years SQL, 1+ year unit testing (xUnit/nUnit/MSTest); Windows and CI/CD experience preferred.
VB, C#, .NET, .NET Framework, SQL, xUnit, nUnit, MSTest, Windows 10, Windows 11, Windows Server, Azure DevOps, Jira, Azure DevOps Pipelines, CI/CD, Microservices, RESTful APIs, C++
ADB Companies: Provides nationwide turnkey telecommunications and utility infrastructure solutions.
7+ YOE7+ years of system analysis/configuration/programming experience; expertise in JavaScript (NetSuite SuiteScript), .NET, Azure DevOps; ERP/CRM/HRIS platform experience; leadership, mentoring, and Microsoft Office proficiency; high school required, bachelor's preferred.
JavaScript, NetSuite SuiteScript, .NET, ASP.NET Core, Azure DevOps, NetSuite, UKG, HubSpot, Microsoft Word, Microsoft Excel, Microsoft Outlook, Microsoft PowerPoint
Dot Foods: Redistributes food products from manufacturers to distributors nationwide.
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
Nomad eCommerce: Provides integrated B2B e-commerce platforms for manufacturers and distributors.
Bachelor's degree or equivalent, proficiency in C#/.NET and object-oriented languages, SQL and REST APIs, experience with JSON/XML, strong problem-solving and communication skills.
NV5: Provides engineering, testing, inspection, and infrastructure consulting services.
3+ YOEBachelor's in CS/Geography/GIS, 3+ years web application development including 1+ year developing geospatial/ESRI apps; proficiency with HTML/HTML5/CSS, Python, JavaScript, .NET, JSON; experience with ArcGIS Server, PostgreSQL/Oracle; U.S. citizen eligible for DoD clearance.
Sr. Application Developer - Legacy System Modernization
Bridgeton, Missouri, United States
OnsiteFull Time
Cass Information SystemsNASDAQ: CASS: Provides invoice processing and payment services for large corporations.
5+ YOE5+ years application development experience, expert C#/.NET and COBOL legacy experience, Microsoft SQL Server, Azure DevOps/GitHub, CI/CD, AI-assisted development, and ability to modernize legacy systems.
C#, .NET, COBOL, SQL, Microsoft SQL Server, GitHub, GitHub Actions, Azure DevOps, HP NonStop, CI/CD
Software Developer / Application & Web Support Lead
Scott Air Force Base, Illinois, United States
OnsiteFull Time
EPS Corporation: Provides engineering, logistics, and technical solutions to federal agencies.
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
Software Developer / Application & Web Support Lead
Scott Air Force Base, Illinois, United States
$110k-$140k/yrOnsiteFull Time
Computer World Services: Provides IT modernization and cybersecurity solutions for federal government agencies.
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
McCarthy Holdings: National construction specializing in commercial and industrial projects.
3+ YOE3+ years developing integrations and applications using iPaaS (Boomi/Mulesoft/Snaplogic), SQL, JSON/XML, modern stacks (.NET,C#/Node.js/TypeScript/Python/Ruby), DevSecOps practices and cloud platforms (AWS/Azure).
LaunchCode: Nonprofit providing free tech education and job placement services.
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