C#, .NET, Modern .NET, ASP.NET Core, RESTful Web APIs, API Versioning, OpenAPI, Swagger, Entity Framework Core, SQL, Relational Database Design, Data Modeling, Application Interfaces, Third-Party Integrations, Backend Services, OAuth 2.0, OpenID Connect (OIDC), Microsoft Entra ID, Managed Identities, Role-Based Access Control (RBAC), Unit Testing, Integration Testing, Git, Pull Requests, Code Reviews, CI/CD, Automated Build & Deployment, Clean Architecture, SOLID Principles, Domain-Driven Design (DDD), JavaScript, TypeScript, HTML, CSS, React, Frontend-Backend Integration, Azure, Azure App Service, Azure Functions, Azure Service Bus, Event-Driven Architecture, Distributed Systems, Asynchronous Messaging, Application Monitoring, Logging, Troubleshooting, Production Support, Azure OpenAI, Generative AI, LLM Integration, Prompt Engineering, AI-Assisted Development, Agentic Workflows, AI-Powered Application Development, Microsoft Power Platform, Microsoft Dynamics 365, Power Apps, PCF, Dataverse, Microsoft Azure Certifications, Power Platform Certifications, Communication, Collaboration, Analytical Skills, Problem-Solving, Ownership, Independent Working.