Mohit Kumar V.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Sep 25, 2026.

AI SaaS Developer | Full-Stack Engineer If you're building an AI product, SaaS platform, or scalable web application and you need it done right, not just done fast you're in the right place. I help startups, SaaS companies, and growing businesses design, develop, and scale AI-powered applications, production-ready SaaS platforms, automation systems, and high-performance web applications built for long-term growth, not just quick demos. With 8+ years of hands-on experience in full-stack development, cloud architecture, and AI/LLM integrations, I specialize in turning complex business requirements into fast, secure, and maintainable software products from the first line of code to cloud deployment and beyond. Whether you need an AI SaaS platform, GPT-powered chatbot, RAG system, multi-tenant CRM, real-time marketplace, analytics dashboard, or enterprise-grade backend I can architect, develop, deploy, and scale the entire system end to end. 🚀 AI DEVELOPMENT & LLM INTEGRATION I build intelligent, production-ready AI applications using modern LLM frameworks, automation tools, and vector search technologies. ✔ OpenAI API & ChatGPT Integration ✔ GPT-4 / GPT-4o Powered SaaS Platforms ✔ AI Chatbots (Web, WhatsApp, Telegram) ✔ RAG (Retrieval-Augmented Generation) Systems ✔ LangChain & AI Agent Workflows ✔ Multi-Agent Automation Pipelines ✔ Context-Aware Multi-Turn Chat Systems ✔ AI Assistants with Custom Business Logic ✔ Vector Databases (Pinecone, FAISS, Weaviate) ✔ AI-Powered Search & Knowledge Base Systems ✔ Workflow Automation using AI ✔ Prompt Engineering & LLM Optimization 🏗 SAAS APPLICATION DEVELOPMENT I architect and build scalable, multi-tenant SaaS platforms with clean code, strong backend systems, and revenue-ready billing infrastructure. ✔ Multi-Tenant SaaS Architecture ✔ Subscription & Usage-Based Billing Systems ✔ Stripe, Razorpay & PayPal Integration ✔ Metered Plans & Tiered Pricing ✔ Role-Based Access Control (RBAC) ✔ Team & Workspace Management ✔ Admin Dashboards & Analytics Panels ✔ CRM & ERP Development ✔ Real-Time Notifications & Activity Feeds ✔ User Onboarding & Auth Flows ✔ Scalable API-Driven SaaS Infrastructure ✔ White-Label SaaS Product Development 💻 FULL-STACK WEB DEVELOPMENT Modern frontend and backend development focused on performance, scalability, and maintainability. Frontend: ✔ React.js & Next.js ✔ Vue.js & Nuxt.js ✔ Angular & TypeScript ✔ Responsive UI/UX Development ✔ Admin Panel & Dashboard Development Backend: ✔ Node.js, Express.js & NestJS ✔ Laravel, Django & Flask ✔ REST API & GraphQL Development ✔ WebSocket & Real-Time Systems ✔ Authentication & Authorization Systems ⚙️ BACKEND ARCHITECTURE & DATABASE ENGINEERING Strong expertise in designing scalable backend systems and optimized databases. ✔ PostgreSQL, MySQL & MongoDB ✔ Redis Caching & Pub/Sub ✔ Query Optimization & Indexing ✔ Microservices Architecture ✔ API Gateway & Distributed Systems ✔ Event-Driven & Queue-Based Systems ✔ High-Traffic Backend Optimization ✔ Secure & Scalable Data Architecture ☁️ CLOUD, DEVOPS & INFRASTRUCTURE I deploy and manage production cloud infrastructure with full CI/CD automation, zero-downtime releases, and cost-optimized architecture. AWS: ✔ EC2, Lambda, S3, RDS, CloudFront, SES, API Gateway Google Cloud (GCP): ✔ Cloud Run, Cloud Functions, Firebase, BigQuery DevOps & Infrastructure: ✔ Docker & Kubernetes ✔ CI/CD Pipelines & GitHub Actions ✔ Zero-Downtime Production Deployments ✔ Automated Scaling & Load Balancing ✔ Secure Cloud Infrastructure Design 📩 READY TO BUILD SOMETHING GREAT? If you're building an AI product, SaaS platform, automation system, or custom web application send me a message with your project details. I'll help you plan the architecture, define the roadmap, and build the product properly from day one. Keywords: AI Developer, Full Stack Developer, SaaS Developer, ChatGPT Developer, OpenAI API Integration, LLM Developer, AI Chatbot Developer, AI Agent Developer, RAG System Developer, LangChain Developer, Node.js Developer, React.js Developer, Next.js Developer, NestJS Developer, MERN Stack Developer, Python Developer, TypeScript Developer, Laravel Developer, CRM Developer, ERP Developer, API Developer, AWS Developer, Web Application Developer, SaaS Application Developer