Muhammad T.

I'm a Full Stack Developer, SaaS Developer, Backend Developer, and AI Developer with 10+ years of experience building scalable web applications, SaaS platforms, mobile apps, AI-powered products, and custom business software. Top Rated Plus on Upwork | 100% Job Success | 25 Jobs | 689 Hours | $40K+ Earned | 5-Star Reviews I handle everything from architecture and database design to frontend, backend, APIs, payments, and deployment. I've built products from scratch, taken over existing codebases, and maintained production applications for years. AI DEVELOPMENT & AI AUTOMATION As an AI Developer, I build AI applications that solve real business problems, not just demos. I integrate AI into existing SaaS platforms, business workflows, databases, and third-party services. My AI development work includes RAG applications, AI agents, AI chatbots, document processing, data extraction, intelligent automation, and LLM integrations. I work with OpenAI, Anthropic Claude, OpenRouter, LangChain, Python, and Node.js. I use structured outputs, tool calling, validation, retries, logging, and human review to make AI features reliable. I also work with AI-generated applications built using Lovable, Bolt, Replit, and v0, turning prototypes into secure, maintainable production software. SAAS & FULL STACK DEVELOPMENT As a SaaS Developer and Full Stack Developer, I build complete applications, from MVPs to production platforms with real users and complex business requirements. My experience includes multi-tenant SaaS, ERP systems, CRM platforms, marketplaces, booking applications, dashboards, subscriptions, Stripe payments, authentication, RBAC, SSO, and API integrations. Stack: React, Next.js, TypeScript, JavaScript, Node.js, NestJS, Express, PostgreSQL, Supabase, MongoDB, Redis, Firebase, AWS, and Docker. I also maintain existing applications, improve performance, fix production issues, and extend features without introducing unnecessary complexity. BACKEND & DATABASE DEVELOPMENT As a Backend Developer, I build REST APIs, backend services, database systems, integrations, and business workflows. I work with Node.js, Python, Django, FastAPI, PHP, Laravel, Java, PostgreSQL, MySQL, MongoDB, Redis, and Supabase. My backend development experience covers authentication, database architecture, Row Level Security, background jobs, webhooks, payment processing, and performance optimization. I also handle cloud deployment, CI/CD, debugging, and production maintenance. AI-ASSISTED DEVELOPMENT I use Claude Code, Cursor, and Codex daily to accelerate development, debugging, testing, and code reviews. In the AI era, programming languages are tools. The real engineering skill is understanding architecture, business logic, data flow, and how everything works together. AI helps me deliver faster, but I still review the code, validate business rules, test edge cases, and take responsibility for production quality. MOBILE APP DEVELOPMENT As a Flutter and React Native Developer, I build iOS and Android applications, including their backend APIs and integrations. My experience includes authentication, subscriptions, Stripe integrations where supported, in-app purchases, push notifications, real-time features, AI integrations, and App Store deployment. I handle mobile development alongside backend architecture, databases, and APIs. SHOPIFY & ECOMMERCE DEVELOPMENT As a Shopify Developer, I build Shopify and Shopify Plus storefronts, custom themes, Shopify apps, and headless ecommerce applications. My Shopify development work includes Liquid, Online Store 2.0, custom sections, metafields, metaobjects, Shopify APIs, product configurators, subscriptions, and headless Shopify with Next.js. I also work on theme migrations, performance improvements, app integrations, and custom functionality that standard Shopify apps cannot provide. FRONTEND, CLOUD & INTEGRATIONS As a React Developer and Next.js Developer, I build responsive web applications, dashboards, admin panels, and customer-facing platforms. My experience covers frontend architecture, state management, REST APIs, authentication, responsive design, and performance optimization. I work with Vercel, AWS, Docker, GitHub Actions, Firebase, and Supabase for deployment, database services, and application infrastructure. WORKING TOGETHER You get one Full Stack Developer who understands the entire product and takes ownership from planning through deployment. I work directly with clients, make practical technical decisions, communicate clearly, and build software that's easy to maintain and extend. Whether you need a new SaaS platform, an AI application, a mobile app, a Shopify store, or help improving an existing product, I can handle the technical work. Free Consultation - Tell me what you're building, what exists already, and where you're stuck.