Fullstack Developer - .NET and React

We are looking for a Fullstack Developer - .NET and React to support modern web application development in Lisle, Illinois. This Long-term Contract position is suited for a developer who brings strong experience across backend and frontend technologies, enjoys building scalable solutions, and can contribute effectively within an Agile team. The role focuses on enhancing existing applications, developing new API-driven functionality, and helping improve code quality, performance, and maintainability across the platform., Build and maintain full-stack web applications using .NET technologies, C#, and React in a collaborative Agile environment. Create and support RESTful APIs in .NET Core to enable reliable integration across application components. Improve existing systems by updating legacy web applications and contributing to modernization efforts with React and .NET Core. Write unit tests and participate in web application testing to promote stable, high-quality releases. Apply sound engineering practices related to security, scalability, and application performance throughout development. Develop and optimize database solutions, including advanced SQL queries and stored procedures, to support business functionality. Use Git-based workflows and CI/CD practices to manage code changes, deployment readiness, and team collaboration. Contribute to cloud and container-based deployment activities, including work with Azure and Kubernetes environments.

8+ years of software development experience with .NET/.NET Core, C#, and related Microsoft development tools. 3+ years of hands-on experience building front-end solutions with ReactJS. Proven experience developing web APIs and backend services using .NET Core. Strong knowledge of ASP.NET, JavaScript, and modern web development concepts. Advanced SQL skills, including experience writing complex queries and stored procedures. Solid understanding of object-oriented programming, code refactoring techniques, and common design patterns. Familiarity with GitFlow, CI/CD pipelines, and deployment practices in cloud or containerized environments. Experience with Azure and exposure to Kubernetes; knowledge of Telerik is a plus., All applicants applying for U.S. job openings must be legally authorized to work in the United States. Benefits are available to contract/temporary professionals, including medical, vision, dental, and life and disability insurance. Hired contract/temporary professionals are also eligible to enroll in our company 401(k) plan. Visit roberthalf.gobenefits.net for more information.

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