Rajinder S.

I help startups, founders, and growing businesses turn ideas into production-ready software. Whether you need an AI-powered chatbot, a scalable SaaS platform, a booking system, a marketplace, or business automation, I build complete solutions from planning and architecture to deployment and long-term support. I don’t just write code—I solve business problems by creating secure, scalable, and maintainable applications that improve operations, automate workflows, and deliver real business value. Top Rated Plus • 300+ Projects • 16,000+ Hours • 98% Job Success • 7+ Years on Upwork Solutions I Deliver ✅ AI Chatbots & AI Agents * OpenAI, Claude & LLM integrations * RAG systems & knowledge assistants * Customer support automation * Document processing * AI workflow automation ✅ SaaS Applications * Multi-tenant SaaS platforms * Subscription & billing systems * CRM & ERP solutions * Admin dashboards * User management & RBAC ✅ Marketplaces & Booking Platforms * Home service marketplaces * Appointment booking systems * Provider & customer apps * Scheduling & real-time notifications * Payment integrations ✅ Custom Business Software * Internal business tools * Workflow automation * Inventory & operations management * Reporting & analytics dashboards * API integrations Why Clients Work With Me • I take ownership of the complete product, not just individual tasks. • Clean, scalable architecture built for long-term growth. • Clear communication with honest timelines. • Production-ready code with maintainability in mind. • Reliable support before and after launch. Technology Stack Frontend: Next.js, React, TypeScript, Tailwind CSS, Shadcn UI Backend: Python, Node.js, Express.js, FastAPI, REST APIs, GraphQL Database: MongoDB, PostgreSQL, MySQL, Firebase, Supabase AI: OpenAI API, Claude API, LangChain, RAG, AI Agents Cloud & DevOps: AWS, Docker, Railway, Vercel, GitHub Actions Mobile: React Native, Expo If you’re looking for a developer who can understand your business, recommend the right technical approach, and build a reliable, scalable product from start to finish, I’d be happy to discuss your project.