Top Senior .NET Developer Jobs in Chicago, IL

Design, code, test and deploy .NET applications (about 50% hands-on). Provide strategic technical guidance, define team patterns and practices, ensure adoption of technologies, and mentor the team while staying current with tools and methodologies.

Design, develop, test, document and maintain .NET web applications using C# and SQL Server. Mentor junior developers, manage tickets, plan project tasks, record daily activity, and introduce relevant emerging technologies.

Lead design, development, and implementation of full-stack applications using .NET and Angular. Collaborate with teams to gather requirements, ensure security, scalability, and performance on Azure, manage SQL Server databases, use Git for version control, and mentor engineering teammates while adopting best practices and emerging technologies.

Lead development of maintainable .NET applications within a small team, apply test-driven development, coach client teams on modern software practices, and continuously improve technical skills.

Senior .NET Web App Developer responsible for designing and building .NET web applications, implementing Oracle PL/SQL solutions, using Entity Framework and Blazor, applying design principles, producing technical documentation, performing performance tuning, and collaborating in Scrum/Agile teams with Bitbucket, JIRA, Tempo, and Confluence.

Develop and maintain UI using Knockout.js, HTML5, CSS3, JavaScript and jQuery; consume RESTful Web APIs; work in Visual Studio 2012/C# .NET; use TFS; follow Agile practices in an onsite-offshore model. Requires 8+ years experience.

Senior .NET full-stack developer responsible for custom application development, API integrations, database optimization, deployments, troubleshooting, performance, security, and production support using .NET/C#, ASP.NET Core, SQL, modern frontend frameworks, cloud, and CI/CD.

Design, develop, test, and deploy .NET solutions (APIs and web apps). Build and consume RESTful services, work with SQL and NoSQL databases, use cloud (Azure/AWS) and Docker, apply unit/integration/performance testing, participate in code reviews, define features via spikes, and architect scalable, high-performance systems. Support occasional after-hours and on-call rotation.

The Senior .NET Developer will enhance websites using Sitefinity, gather requirements from business users, and manage development timelines across backend and frontend development.

Design, build, and maintain scalable web applications for payroll and accounting. Collaborate with engineers and product partners, write tested code, participate in code reviews, contribute to architecture, improve CI/CD and monitoring, support production (including on-call), and communicate progress while continuously learning.

The role requires relevant experience in .NET technologies and web application development, along with strong communication and teamwork skills.

The .Net Developer will capture requirements, interact with clients, define designs, conduct acceptance testing, and provide production support.

The .Net developer will capture requirements, interact with clients, define designs, conduct acceptance testing, and provide production support.

The .Net Developer will capture requirements, collaborate with clients, analyze designs, support applications, and manage releases, requiring strong technical skills and 8+ years experience.

The .Net Developer will capture requirements, collaborate with clients, review designs, perform acceptance testing, and provide production support for applications.

Looking for a Senior .Net Developer with over 9 years of experience in .Net, specifically in WCF and MVC.

The role involves developing applications using .Net and SharePoint technologies, requiring a strong background in web application development and multiple programming languages.

The .Net Developer is responsible for designing, building, and maintaining applications, ensuring performance and quality, and mentoring others in coding standards.

The .Net Developer will design and enhance enterprise-level applications, support project phases, gather requirements, and utilize various technologies including C#.Net and SQL Server.

Develop, maintain, and support C#/.NET web and desktop applications for clearing and financial-management systems. Work with business users and engineers to analyze requirements, debug and improve performance, implement monitoring, design fixes and integrations, and deliver production-ready deployments and emergency fixes. Contribute to documentation, collaboration, and automation to improve production performance and reliability.

As a Full Stack Engineer, you'll develop full-stack applications using .NET and React, focusing on creating user-friendly interfaces and robust backends for AI integration. Responsibilities include API design, database management, application deployment, code quality assurance, and collaboration with cross-functional teams.

Build and maintain scalable, cloud-native APIs using .NET. Enhance core platform components, lead architecture and testing discussions, optimize telemetry and performance, collaborate cross-functionally, conduct code reviews, and mentor team members.

Seeking a Senior Software Engineer to design and implement multimedia data systems using C# and .NET Core. Responsibilities involve developing high-performance applications, collaborating with teams, and driving engineering excellence in an Agile environment.

The Senior .Net Developer will enhance SDG's C#/.NET Core codebase, design high-load services, and optimize MS SQL queries, benefiting from a remote work environment and attractive benefits.

As a Senior Software Engineer at PerfectServe, you'll design, build, and maintain high-quality code for healthcare communication systems, mentoring junior engineers and collaborating across teams to improve patient care and clinical workflows.