Develop and modernize full-stack applications using C#, .NET, React, and related technologies. Design REST APIs and microservices, build data-access layers with Entity Framework Core and SQL Server, and contribute to architecture, testing, code reviews, and Agile delivery. Maintain legacy systems while incrementally modernizing functionality, optimize application performance, and collaborate with UX, product, QA, research, data, and operations teams. Integrate AI technologies into applications and support clean, maintainable, scalable software development.