Hire the Best Neo4j Developers
in India

I spent 2 years as an AWS engineer inside AWS itself before going independent — now I build the AI and cloud systems startups and enterprises actually put into production. Over 9.5 years in IT (5+ focused on AI applications), I've shipped RAG pipelines, LLM-powered agents, and serverless AWS architectures that handle real production traffic — not demos. Recent work includes an AI system currently supporting 10,000+ daily users, a Neo4j knowledge-graph-backed retrieval system for intelligent document search, and serverless chatbots built on Amazon Bedrock and Pinecone for an enterprise gaming client. What I build: 🔹 RAG & AI Systems — Production RAG architectures, LangChain agent workflows, document Q&A and AI chatbots, vector search (Pinecone, ChromaDB, OpenSearch), Amazon Bedrock integrations, Neo4j knowledge graphs 🔹 AWS Serverless & Backend — Lambda, API Gateway, Step Functions, event-driven microservices, FastAPI/Flask REST APIs, Terraform/CloudFormation IaC, DynamoDB/RDS I care about cost-efficient architecture, security by default (IAM least-privilege, VPC design, and Secrets Manager), and systems that don't fall over at 2am. Clients keep working with me because I communicate proactively, ship clean and documented code, and stick around for the maintenance and iteration phase — not just the initial build. If you're trying to get an AI feature or RAG system from "cool prototype" to "reliable production system", that's exactly the gap I work in. Message me with what you're building — I'll tell you honestly whether it's a good fit before we start.

I am a newbie freelancer and proud Computer Graduate. I can do a full-stack web developement and having more then 5 years of experience into front-end as well as server side technologies. I am also having good command on Wordpress development. Being a beginner, I am very enthusiastic to go above and beyond to create great work and ensure great relationship with you. I have delivered end to end websites having functionalities like shopping cart, Payment integration, Browser notification, automated email notifications. My designs are responsive by default, so it can be opened on any screen sizes of desktops and smart devices. Even they are ready to fit for Android/iOS Apps also. I have designed multi-page as well as single-page websites. Speaking about my working style, I report daily to my client with the update of the project and more understanding of the project. Happy to serve my design and programming skills to my clients. My vision is to give best services to my clients. I am a good TEAM player. Can handle big applications and can give QA support as well. Always focused on highest quality work to create long lasting professional relationship with you. Good in communication since worked with multiple clients in UK, USA Japan and Canada. I am also very flexible about the changes as the development continues. I understand that you may not be able take all the design decisions before actually looking at working prototype. Open to suggestions from my you to improve my services and build good professional relations. Thank you for checking my profile and will be happy to hear from you soon and looking forward to work with you.

I build AI systems that reason, not just match vectors, From RAG-based chatbots to AI agents powered by Neo4j and OWL-based ontologies. Worked with Mercedes Benz, Philips and QpiAI before to make smart RAG and semantic knowledge systems. Hi, I'm a Ontologist + Graph Engineer with 2+ years of production experience helping startups and enterprises turn complex knowledge into smart, conversational systems Here are some of the things I know how to do: ⦁ LLMs & NLP: Raptor, GraphRAG, prompt engineering, semantic search, vector databases. ⦁ MLOps & Deployment: MLflow, DVC, CI/CD (Jenkins, CircleCI), model ensembling. ⦁ Ontology Engineering (OWL, SWRL, SKOS, Turtle): Crafting rich knowledge graphs with logical reasoning in Protégé. ⦁ RDF & Data Transformation: Structuring raw data into interconnected RDF triples. (JSON-LD, XML) ⦁ Semantic-AI Fusion: Blending symbolic reasoning with neural retrieval strategies like Raptor, Fusion, Query Expansion, Contextual Retrieval, and Re-ranking ⦁ Structured LLM Responses: Ensuring reliable, schema-aligned outputs using Pydantic for validation and API interaction ⦁ Model Integration: Leveraging OpenAI, open Source Models -LLaMA, Gemini and vector databases for efficient hybrid search. If you're building AI that needs to truly understand — not just retrieve — I’d be excited to collaborate.

React.js | Next.js | Node.js | NestJS | Flutter | Shopify Apps | WordPress | MongoDB | PostgreSQL | Elasticsearch | Neo4j | AWS I build scalable web, mobile, cloud, and e-commerce applications with expertise in backend architecture, cloud infrastructure, APIs, Shopify app development, modern frontend development, and long-term product maintenance. Backend Development • NestJS, Node.js, Express.js & Next.js • REST APIs & GraphQL • Microservices Architecture • Redis, RabbitMQ & Apache Kafka • WebSockets & MQTT • Authentication (JWT, OAuth & RBAC) • Third-party API & SDK Integrations Frontend & Mobile • React.js, Next.js & Redux • Flutter (Android & iOS) • Responsive Web Applications • Admin Dashboards & CMS • Tailwind CSS, Bootstrap & Material UI Shopify Development • Custom Shopify App Development • Shopify Admin API & Storefront API • Shopify Polaris & App Bridge • OAuth Authentication & Webhooks • Product, Order & Inventory Integrations • Public, Custom & Private Apps WordPress Development • Custom WordPress Websites • Theme & Plugin Development • WooCommerce Development • Performance & SEO Optimization • API Integrations & Custom Features Messaging & Automation • Telegram Bot Development • WhatsApp Business API Integration • Chatwoot Implementation & Customization • Real-time Chat Applications • Push Notifications & Messaging Workflows Cloud & DevOps • AWS (EC2, S3, CloudFront & Lambda) • Azure & DigitalOcean • Terraform • Docker • CI/CD Pipelines • Load Balancers & Auto Scaling • SSL, Monitoring & Logging Databases • MongoDB • PostgreSQL • Elasticsearch • Neo4j Maintenance & Support • Ongoing Website & Application Maintenance • Bug Fixes & Performance Optimization • Feature Enhancements • Security Updates & Monitoring • Server Management & Deployments Additional Expertise • Electron.js Desktop Applications • Search & Analytics Solutions • Workflow Automation • API Architecture & Microservices • AI & LLM API Integrations • Payment Gateway Integration (Stripe, PayPal, Razorpay, Square) • Subscription & Recurring Payment Systems • Payment APIs & Webhooks • Checkout Flow Development • Order & Transaction Management • Refunds, Invoices & Payment Status Handling • Secure Payment Processing & PCI Compliance Best Practices Highlighted Skills / SEO Keywords Full-Stack Developer, Expert Full-Stack Developer, React.js Developer, Next.js Developer, Node.js Developer, NestJS Developer, Flutter Developer, Flutter Mobile App Developer, Cross-Platform Mobile App Development, iOS & Android App Development, Full-Stack Web Application Development, SaaS Application Development, Enterprise Web Applications, Custom Web Development, Modern Frontend Development, Backend API Development, REST API Development, GraphQL API Development, Microservices Development, Node.js Backend Solutions, NestJS Backend Solutions, Real-Time Application Development, WebSocket Integration, MQTT Integration, Third-Party API Integration, SDK Integration, Payment Gateway Integration, Stripe Integration, PayPal Integration, Razorpay Integration, Subscription Billing Systems, E-commerce Development, Shopify App Development, Shopify Custom Apps, Shopify API Integration, Shopify Storefront API, WordPress Development, WooCommerce Development, WordPress Plugin Development, WordPress Website Maintenance, Flutter Firebase Integration, Mobile App Development, Mobile Backend Development, Admin Dashboard Development, CMS Development, Database Design, MongoDB, PostgreSQL,Dating app, Elasticsearch, Neo4j, Redis, RabbitMQ, Apache Kafka, AWS Cloud Development, AWS Deployment, Cloud Infrastructure, Docker, CI/CD Pipelines, Terraform, API Architecture, Microservices Architecture, Performance Optimization, Security Improvements, Bug Fixing, Code Audit, Legacy Application Modernization, AI Integration, OpenAI API Integration, Workflow Automation, WhatsApp Business API Integration, Telegram Bot Development, Chatwoot Integration, Real-Time Chat Applications, MVP Development.

💬 “Rajesh consistently moved swiftly from ideation to a working product, accelerating timelines and delivering great results.” — Rotem Alaluf, CEO, Wand.ai 💬 “Throughout my career, I’ve worked with many developers, engineers, and CTOs, but Rajesh stands out.” — Khaled Azar, Serial Founder & M&A Advisor ⚡ 15 years building software | Nearly 10,000 Upwork hours | 50+ five-star projects | Production AI systems used by tens of thousands I build ambitious AI products — especially multi-agent systems, GraphRAG, AI automation, and voice AI. Bring me in when the problem is technically difficult, the path from idea to production isn’t obvious, and you need someone who can own the problem rather than just implement a specification. 🚀 SOME OF THE SYSTEMS I’VE BUILT 🏢 WAND.AI — MULTI-AGENT AI PLATFORM AT SCALE Built on Wand’s core AI platform: agents that execute code, work with email and calendars, search files, use tools, and maintain long-term memory. A production system used by tens of thousands of people, running on GCP with event-driven architecture, Kubernetes, and CI/CD. 📈 COINQUANT — MULTI-AGENT AI TRADING PLATFORM Built multi-agent architecture that turns trading strategies described in plain English into structured, validated, backtestable strategies. Manager agents orchestrate specialized Strategy and Domain agents working across 30–40 custom tools, with LangSmith observability across the graph. Used by tens of thousands of users. 🔗 GRAPHRAG — GLOBAL COMMERCIAL-VEHICLE MANUFACTURER Built a hybrid knowledge-graph + vector-retrieval pipeline to automate complex event-to-component mapping over unstructured technical data — work previously performed manually by domain experts. 💻 MULTI-AGENT AI CODING SYSTEM Built a software-development system where specialized agents collaborate across complex coding tasks, each with its own responsibilities, context, tools, and execution capabilities. 🧪 MULTI-AGENT EVALUATION SYSTEM Built evaluation and regression infrastructure for agentic systems: datasets, automated evaluations, execution tracing, observability, and regression testing to catch behavioral changes as models, prompts, tools, and architectures evolve. 🤝 MULTI-TENANT AI SUPPORT Built multi-agent support systems spanning different organizations, knowledge bases, tools, and workflows — including orchestration, tenant isolation, retrieval, tool execution, and escalation. 🎙️ REAL-TIME VOICE AI Built real-time multi-agent voice systems, including an AI interviewer designed to operate at roughly a tenth of the usual cost, with voice-activity detection, interruption handling, noise cancellation, and low-latency agent orchestration. 🧠 WHAT I CAN BUILD FOR YOU ⚙️ Multi-agent architecture & orchestration 🧪 Evaluation, observability & regression testing 🔗 GraphRAG & knowledge graphs 💻 AI coding & automation systems 🛠️ Tool-using agents & MCP integrations 🧠 Memory & complex agent state 🎙️ Real-time voice AI 🚀 Open-source models & vLLM ☁️ GCP, Kubernetes, serverless & CI/CD I work across the full system. Commercial APIs when they’re the right fit. Open-source models when they make technical or economic sense. Kubernetes when the product needs it; a clean Ubuntu deployment when it doesn’t. The technology serves the product — not the other way around. 🎯 If you’re building an ambitious AI product and need someone who can understand the problem, figure out the architecture, and move from idea to a working production system, let’s talk.

I am a passionate MERN stack developer, with more than 4 years of experience. Currently enrolled in one of the premier institutions of India, IIT Madras, pursuing B.Sc in data science and applications. As a top rated developer I assure you of the best quality of work. I have experience working with MERN stack, svelte, gatsby, next.js. I have also worked with UI/UX design in figma.