Nishant A.

I help companies build, extend, and modernize production applications with .NET and Azure, including adding AI capabilities where they create real business value. I'm a Senior Full Stack Developer with more than a decade of experience across enterprise applications, SaaS platforms, APIs, integrations, cloud systems, and AI powered products. My core stack is .NET, ASP.NET Core, Azure, SQL Server, Angular and React, with experience across APIs, microservices, integrations, background processing and cloud infrastructure. On Upwork, I have completed 50+ projects and 36K+ hours of development work, working with startups, SaaS companies and established businesses. WHAT CAN I HELP WITH # Existing .NET application development and modernization # Backend/API development and third party integrations # Azure cloud applications, microservices and background processing # Angular and React frontend development # AI/LLM integration, RAG, intelligent search and document workflows # Performance, scalability and production troubleshooting KEY ACHIEVEMNETS # Developed CRM and marketing automation platforms serving thousands of users # Developed healthcare platforms with secure, compliance-focused architecture # Designed high-throughput systems capable of processing thousands of transactions and messages efficiently # Delivered cloud-native microservices platforms with high availability and scalability # Integrated AI capabilities into business applications to improve automation, search, and user productivity # Led Agile teams as Scrum Master while driving architecture and technical direction CORE EXPERTISE # Backend: .NET, ASP.NET Core, Web API, MVC, WCF, C#, microservices, integrations, event driven systems # Frontend: Angular, React, TypeScript, JavaScript # Cloud: Azure, AWS, Docker, Kubernetes, CI/CD # Data: SQL Server, MongoDB, Redis, Elasticsearch # AI: LLM applications, Generative AI, RAG, AI assistants, intelligent search, document processing, OpenAI integrations SELECTED PROJECT EXPERIENCE AI Powered Knowledge & Search Solutions:- Built AI powered capabilities for business applications, including: # Intelligent document search and knowledge retrieval # AI assisted workflows and enterprise information discovery # LLM integrations for business process automation # AI-powered application features using Generative AI Health & Wellness Platform:- Built and extended a microservices-based health and wellness ecosystem with: # Real-time tracking and analytics #Health monitoring and device integrations # Secure APIs and service-to-service communication # .NET Core, Vue.js, MongoDB, AWS and Elasticsearch CRM & Marketing Automation Platform:- Built and extended a SaaS CRM and marketing automation platform with: # Drag-and-drop campaign and workflow builder # High-volume SMS and email processing # Third-party integrations including Zapier and Xero # .NET APIs and frontend application development CellarPass Travel SaaS Platform:- Contributed to an enterprise travel SaaS platform with: # Itinerary planning and travel management capabilities # Azure-based microservices architecture # Angular frontend with NgRx and RxJS # .NET Core backend services and APIs Enterprise Document Management System:- Built an enterprise document management solution with: # Secure document workflows and audit trails # Role-based access and permissions # Document version control and management # Angular, .NET Core, SQL Server and OpenXML WHAT CAN YOU EXCEPT # I can step into an existing codebase and become productive without requiring everything to be rebuilt. # I work across backend, frontend, database, integrations and cloud when the project requires it. # I can take ownership of a feature or work as part of an existing engineering team. # I focus on maintainable production code rather than short-term prototypes. # I communicate clearly about progress, risks and technical decisions. If you have an existing .NET/Azure application that needs new development, modernization, integrations, performance work, or AI capabilities, send me the details. I can quickly assess the technical scope and discuss how I can contribute.