Usama Bin N.

I add production AI to software you already have. Most of my Upwork work is OpenAI and Claude inside .NET and Next.js products: streaming chat, structured outputs, function calling, and retrieval over the client's own data (RAG). I am Top Rated, based in Gujranwala Pakistan, available more than 30 hours a week, and I usually reply within a few hours. Job Success on this profile is 94%. Recent production work: 1: OpenAI and Claude in a live Next.js app, with streaming responses and structured outputs 2: A .NET 8 and Next.js multi-tenant SaaS, taken from architecture through AWS 3: RAG, chatbot, and agent-style features added to an existing enterprise SaaS product 4: An n8n workflow that pulls several job-board APIs, handed off with documentation 5: A React stabilization that cut page loads from 5-8 seconds to under 2 seconds 6: A ClickHouse, Kafka, Node.js, and React analytics platform ━━━━━━━━━━━━━━━━━━━━ AI DEVELOPMENT & GENERATIVE AI PROMPT ENGINEERING ━━━━━━━━━━━━━━━━━━━━ 1: OpenAI API & Claude (Anthropic) - structured outputs, function calling, streaming 2: Retrieval Augmented Generation (RAG), Generative AI, AI Model Integration, AI Implementation 3: AI Chatbot / Chatbot Development, AI agents, smart search & recommendations 4: Multi-step AI pipelines, Generative AI Prompt Engineering, Large Language Model integration 5: AI Automation & Workflow Automation with n8n; real-time AI features with SignalR/Websockets live progress tracking ━━━━━━━━━━━━━━━━━━━━ FULL-STACK DEVELOPMENT ━━━━━━━━━━━━━━━━━━━━ 1: Front-End Development: Next.js, React, Angular, NgRx, Nx monorepo/microfrontend, TypeScript, JavaScript, Tailwind CSS 2: Back-End Development: C#, ASP.NET Core, .NET Framework / .NET Core, Node.js (NestJS), REST API, API Gateway, Microservice and Clean architecture, 3: Payments & integrations: Stripe API, third-party API Development & API Integration 4: Database: PostgreSQL, SQL, Microsoft SQL Server, Entity Framework, query optimization, Database Architecture 5: Cloud & DevOps: Amazon Web Services (AWS), Microsoft Azure, Azure App Service, Azure DevOps, Docker, CI/CD ━━━━━━━━━━━━━━━━━━━━ SOFTWARE ARCHITECTURE & SAAS ━━━━━━━━━━━━━━━━━━━━ 1: Enterprise Software Development & multi-tenant SaaS platform architecture 2: RBAC, compliance-aligned system design for regulated industries 3: Web Application Development with clean, scalable, well-documented code 4: Featured build: Happinest - an AI-powered event & vendor management SaaS (Next.js, .NET Core microservices, PostgreSQL, AWS, GPT-4o, SignalR/Websockets, Stripe) I also do a paid first look at an existing codebase when you want a recommendation before a build. Message me with the repo or a short description of the product. I will tell you whether AI belongs in it, and what I would ship first.