Top .NET Developer Jobs in Chicago, IL

Develop and maintain core components of a modern digital auction platform using C# and .NET Core. Responsibilities include designing data models, building RESTful APIs, integrating legacy and third-party systems, developing Azure DevOps CI/CD pipelines, troubleshooting performance issues, conducting code reviews, documenting best practices, and collaborating with product managers and multiple engineering teams.

Lead hands-on software design and development for scalable .NET services and web applications on Azure. Modernize legacy systems, design APIs and integrations, improve CI/CD, testing, observability, and secure coding practices, and mentor engineers. Collaborate with operations and business leaders to solve freight-related challenges through software while contributing to technical direction and engineering standards.

Develop and support a distributed CAD-to-CAD software solution using .NET and C#. Responsibilities include design, development, documentation, testing, debugging, installation, upgrades, performance monitoring, and customer support. The role requires collaboration with product owners, clients, hardware engineers, and multidisciplinary teams; proposal writing, demonstrations, training support, and acceptance activities are also included. Candidates must be able to perform automated, load, fault, and unit testing while supporting reliable remote deployments.

Design, build, and maintain production-grade .NET web applications and APIs on Azure. Own full-stack delivery from data models and SQL to front-end components, CI/CD, testing, and architecture. Collaborate with product and delivery teams, participate in code reviews, and ensure secure, observable, well-tested services.

Build and maintain scalable, cloud-native APIs and high-value core system components using .NET and related technologies. Lead software architecture and testing discussions, enhance core offerings, collaborate cross-functionally, and ensure quality through code reviews, unit testing, functional testing, telemetry, and performance tuning. Mentor teammates and contribute to continuous technical and process improvement.

Develop and maintain web-based applications using .NET/C#, JavaScript, HTML/CSS, SQL and Oracle/SQL Server. Perform root cause analysis, collaborate with teams for requirements, follow Agile SDLC, present change demonstrations, and use Azure DevOps/Jira for lifecycle management. Implement and maintain Blazor components.

Senior .NET Software Engineer responsible for end-to-end software development using Microsoft technologies. Requires extensive experience in SDLC, design principles, technical documentation, web application development with .NET, Agile/SCRUM, Entity Framework, database design, and version control. Familiarity with project tools JIRA, TEMPO, Bitbucket, and Confluence preferred.

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 a mission-critical .NET financial web application. Responsibilities include full-stack development with C#, ASP.NET, JavaScript, and jQuery; SOAP/XML integrations; Oracle SQL and PL/SQL database work; secure coding; unit testing; production troubleshooting; Agile delivery; documentation; and collaboration with product, business, and testing teams.

Configure and support the FASTDS-VS COTS application, including requirements analysis, user permissions, reference tables, change-request development, scripting, debugging, source control, testing, implementation specifications, and production support. The role requires SQL and object-oriented development experience, familiarity with software development methodologies, and strong analytical and communication skills.

Develop and modernize enterprise .NET applications using C#, Microsoft SQL Server, cloud-native architectures, CI/CD, TDD, and automated testing. Analyze legacy code and data, modernize SQL jobs and stored procedures, support Agile teams, promote engineering best practices, and provide technical mentorship.

Develop and maintain middleware platforms for the myQ residential and commercial products. Translate product requirements into technical designs, lead Agile development and offshore teams, manage codebase changes and technical debt, ensure coding standards and security compliance, and collaborate with product, architecture, infrastructure, database, QA, and firmware teams. Mentor engineers, participate in technical reviews, troubleshoot issues, document solutions, and support project estimation and progress reporting.

Design, develop, and deliver scalable .NET back-end and front-end solutions within an Agile, DevOps-oriented team. Lead technical design, code reviews, testing-first practices, CI/CD pipelines, containerized deployments, and ensure non-functional requirements (security, performance, scalability, maintainability). Mentor peers and collaborate across product, design, and architecture to produce high-quality software.

Lead development of secure, scalable digital banking software across front-end and backend systems. Design Angular or React applications, build APIs, optimize SQL performance, integrate third-party platforms, improve code quality, implement testing strategies, and mentor engineers. Collaborate with cross-functional teams in an Agile environment while supporting cloud-native practices, regulatory compliance, and continuous product improvement.

Owns the design, development, testing, deployment, and maintenance of production software. Builds C#/.NET backend services, Angular web applications, and .NET MAUI mobile apps; optimizes SQL Server databases; resolves production issues; improves reliability, security, performance, and observability; writes tests and documentation; participates in code reviews; and translates ambiguous business needs into maintainable technical solutions.

Leads hands-on full-stack development across architecture, implementation, testing, deployment, and support. Designs secure, scalable C#/.NET and Angular applications, cloud integrations, APIs, and data solutions on AWS. Guides developers, establishes engineering standards, manages CI/CD and automated testing, troubleshoots complex issues, and drives cloud optimization, security, and technical debt reduction. Collaborates with product, architecture, DevOps, analytics, and project teams while supporting migration of on-premises applications to AWS.

Lead a development team while remaining hands-on in full-stack engineering. Design, build, test, deploy, and support secure web applications using C#/.NET, Angular, databases, and AWS. Drive cloud migrations, architecture, CI/CD automation, application security, troubleshooting, performance and cost optimization. Mentor developers, establish engineering standards, lead technical delivery, and collaborate with product, data, DevOps, and architecture teams.

Build scalable backend-heavy services and applications using C# and .NET, while contributing to Angular and TypeScript UI development. Design and develop REST APIs and microservices, work with relational databases, implement automated testing and CI/CD, and ensure system security, scalability, and performance. Preferred work includes event-driven architectures, messaging systems, NoSQL databases, caching, search technologies, and mentoring engineers or leading technical initiatives.

Leads end-to-end modernization from a monolith to microservices, including legacy analysis, architecture, estimation, data migration, deployment, and production support. Guides .NET services, databases, messaging, containerization, and frontend integrations. Acts as the technical escalation point for complex issues while improving Jira tracking, estimation accuracy, QA collaboration, release predictability, and engineering processes. Manages and develops the team through one-on-ones, performance reviews, feedback, and career-focused objectives.

Lead end-to-end development of secure, scalable web applications and data solutions supporting clinical trial operations. Design frontend and backend components using C#/.NET, Angular, AWS, and relational or non-relational databases. Guide architecture, testing, deployment, CI/CD, security, cloud optimization, and regulatory compliance. Mentor developers, oversee technical delivery, troubleshoot complex issues, and lead migration and modernization of on-premises applications to AWS.

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

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.

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

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.