Muhammad Usman H.

I build AI agents, RAG chatbots and full-stack web applications. My foundation is 7+ years of .NET and enterprise software development, so I can connect an AI workflow to the systems your business already runs. AI services • AI agents with tool calling, multi-step workflows and third-party API integrations • RAG chatbots and document Q&A using your own data, vector search and source citations • Fine-tuning pretrained models on your dataset • Custom ML and foundation-model training from scratch, scoped to your data, compute and goals • AI integration with OpenAI, Claude or a suitable self-hosted model; Ollama deployments where they fit • Workflow automation with n8n, Make, Zapier or custom Python/Celery pipelines Full-stack development • ASP.NET Core, MVC, Web APIs and Blazor applications using C# • Angular, React and Next.js frontends; Django or FastAPI backends • SaaS MVPs, multi-tenant applications, dashboards, authentication and Stripe integrations • Features, bug fixes, API integrations and database work for existing systems • SQL Server, PostgreSQL, MongoDB, Cosmos DB, EF Core, Dapper and Redis • Docker, Azure/AWS deployments and CI/CD with Azure DevOps or GitHub Actions My enterprise background includes insurance systems, laboratory and healthcare portals, logistics applications, and business software. I work with Clean Architecture, CQRS and role-based access where they suit the project. For model fine-tuning or training, we first agree on the task, model/checkpoint, dataset readiness, evaluation criteria, compute budget and deliverables. Training from scratch is scoped separately from app integration; the cost and timeline depend on the model, data and available hardware. You can expect a clear scope, progress updates and maintainable code. We can define milestones and handover documentation around your project. Send me your project goal, current stack and feature list. For model work, include the model family, approximate dataset size and compute setup. I'll help outline a practical approach, delivery scope and next steps.