Rajat V.

Most developers can write code. Fewer can take a rough product idea, understand the business problem behind it, design the right architecture, and build something that still works properly months after launch. That’s the kind of work I focus on. I’m Rajat, an AI & Full-Stack Engineer with 7+ years of experience, $20K+ earned, 21 completed jobs, 963+ hours worked, and 100% Job Success on Upwork. I help startups, agencies, and growing businesses build AI-powered systems, SaaS platforms, automation tools, and full-stack applications that are practical, scalable, and easy to maintain. A lot of AI projects look impressive in a demo but fail when they need to handle real users, real data, real workflows, and real business rules. My goal is to build AI and software systems that are not just technically working, but useful in day-to-day operations. 𝐀𝐈 𝐒𝐲𝐬𝐭𝐞𝐦𝐬 & 𝐋𝐋𝐌 𝐀𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬 🔹 Custom AI chatbots and AI assistants using OpenAI, Claude, Gemini, and other LLMs 🔹 RAG-based knowledge systems for PDFs, websites, documents, and internal business data 🔹 Vector search using Pinecone, Supabase pgVector, ChromaDB, Weaviate, and FAISS 🔹 AI agents and workflow automation using LangChain, LlamaIndex, LangGraph, n8n, Make, and Zapier 🔹 Document intelligence, semantic search, AI support systems, and internal knowledge assistants 🔹 AI automation for sales, support, operations, HR, healthcare, logistics, and internal teams 𝐕𝐨𝐢𝐜𝐞 𝐀𝐈 𝐀𝐠𝐞𝐧𝐭𝐬 🔹 Human-like voice agents using Retell, Vapi, Twilio, ElevenLabs, Whisper, and Deepgram 🔹 Lead qualification, appointment booking, customer support, and call routing agents 🔹 CRM updates after calls using GoHighLevel, HubSpot, Zoho, Google Sheets, and custom APIs 🔹 Call transcripts, summaries, analytics, and automated follow-up workflows 𝐅𝐮𝐥𝐥-𝐒𝐭𝐚𝐜𝐤 𝐒𝐚𝐚𝐒 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 🔹 SaaS dashboards, admin panels, customer portals, and internal business tools 🔹 React, Next.js, TypeScript, Node.js, Python, FastAPI, Laravel, and REST/GraphQL APIs 🔹 Multi-tenant SaaS architecture with authentication, roles, permissions, and clean database design 🔹 Stripe payments, subscriptions, CRM integrations, calendar integrations, and third-party APIs 🔹 PostgreSQL, MySQL, MongoDB, Firebase, and Supabase 𝐂𝐥𝐨𝐮𝐝, 𝐃𝐞𝐩𝐥𝐨𝐲𝐦𝐞𝐧𝐭 & 𝐌𝐚𝐢𝐧𝐭𝐚𝐢𝐧𝐚𝐛𝐢𝐥𝐢𝐭𝐲 🔹 AWS, GCP, Azure, Vercel, Render, and DigitalOcean deployments 🔹 Docker, GitHub Actions, CI/CD, API monitoring, logging, and error handling 🔹 Clean architecture so the product can grow without becoming difficult to maintain 𝐈𝐧𝐝𝐮𝐬𝐭𝐫𝐢𝐞𝐬 𝐈 𝐖𝐨𝐫𝐤 𝐖𝐢𝐭𝐡 🔹 AI SaaS and product startups 🔹 Healthcare and clinic automation 🔹 LegalTech and document automation 🔹 HR and workforce platforms 🔹 Logistics and field service businesses 🔹 FinTech and payment systems 🔹 Real estate and PropTech 🔹 E-commerce and marketplace platforms 🔹 Marketing automation and CRM systems 🔹 Internal tools and enterprise automation What makes my work different is that I don’t only ask, “What should I build?” I first try to understand why you need it, where the current process is slow or broken, and how the system should work when your business grows. Whether you need an AI-powered SaaS platform, a RAG knowledge assistant, a voice AI agent, a CRM automation system, or a full-stack product built from scratch, I can help you plan it properly, build it cleanly, and launch it with confidence. If you are building something serious and want an engineer who can think through both the technical side and the business workflow, tell me what you’re working on. 🔧 EXPERTISE: AI Automation | No-Code Development | Airtable | Zapier | Make | n8n | AI Agents | ChatGPT Integration | LLM Implementation | Workflow Automation | API Integration | Database Design | Digital Workers | Business Process Automation