Sumit S.

Are you looking for a battle-tested .NET & SQL Specialist to build scalable Web APIs, modernize legacy applications, or solve complex data processing challenges? With 14+ years of hands-on software development experience and a proven track record on Upwork ($80K+ earned, 100% Job Success, Top Rated), I help businesses design, optimize, and maintain high-performance backend systems and data architectures. Whether you need robust REST APIs built with ASP.NET Core, data recovery/extraction from complex database dumps (e.g., SQL BAK files, legacy DBs), or integrating modern AI features into existing enterprise applications, I deliver reliable, maintainable, and clean solutions. 🛠️ Core Technical Capabilities: 1. .NET Backend & Web API Development • C#, ASP.NET Core, Web APIs, ASP.NET MVC, Microservices • Legacy System Modernization (e.g., COM Interop to REST APIs) • Custom API layers, third-party service integrations, and web automation 2. SQL Server & Advanced Data Solutions • Microsoft SQL Server programming, query optimization, and database design • SQL BAK file data extraction, parsing, and recovery • Complex data pipelines, JSON parsing, eDiscovery formats (RSMF), and OCR data conversion 3. Enterprise System Integration & Automations • API integration between CRMs (e.g., Zoho CRM), ERPs, and custom backend systems • Data transformation, deduplication (BigQuery SQL), and structured record syncing • Integrating AI capabilities (OpenAI API, RAG workflows, AI Agents, Claude MCP) directly into .NET applications 💡 Why Clients Choose to Work With Me: • Top Rated & 100% Job Success: Consistent track record of delivering high-quality solutions on time. • End-to-End Execution: From legacy code cleanup to modern web API design and complex SQL queries. • Clear & Proactive Communication: Fast response times, structured progress updates, and transparent problem-solving. If you have a project, a database challenge, or an application that needs experienced .NET engineering, feel free to click "Invite to Job" or send a message. Let's discuss your requirements!