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sahil-develop/README.md

Hi, I'm Sahil 👋

Backend Engineer • AI Engineer • Cloud & Distributed Systems

I build scalable backend systems, event-driven microservices, and AI-powered applications that run in production — not just in notebooks.

🌐 Portfolio💼 LinkedIn💻 GitHub


About Me

Backend Engineer with 3+ years of experience designing and shipping scalable APIs, distributed systems, and cloud-native platforms. Over the last year, I've been pushing that experience into AI — building production RAG pipelines, LLM-powered support systems, and tool-calling agents on top of the same backend fundamentals: reliability, observability, and clean architecture.

I care about systems that hold up under real traffic, not just demos.


🚀 Currently Building

  • 🤖 AI customer support systems (LLMs + Tool Calling + RAG)
  • 🧠 Retrieval-Augmented Generation pipelines
  • ⚙️ Scalable backend APIs and microservices
  • ☁️ Cloud infrastructure on AWS
  • 🔄 Event-driven workflow automation platforms

🛠 Tech Stack

Languages JavaScript TypeScript Python

Backend Node.js NestJS Express FastAPI Django Flask GraphQL

AI / LLM OpenAI Groq LangChain ChromaDB RAG MCP Tool Calling Vector Databases

Cloud & DevOps AWS Docker Kubernetes Terraform GitHub Actions

Data PostgreSQL MongoDB Redis RabbitMQ


🌟 Featured Projects

🤖 AI Order Chat System Multi-tenant AI-powered customer support platform. Groq LLM Tool Calling ChromaDB (RAG) Session Memory Smart Order Cancellation Inventory Search Policy Search

⚖️ ADR Automation Platform Enterprise-grade dispute resolution platform supporting 25+ services. Case Management RBAC Billing & Invoicing Zoom Integration QuickBooks Integration Async Processing

📚 HR Policy RAG System AI assistant that answers HR policy questions via Retrieval-Augmented Generation. LangChain ChromaDB Semantic Search LLM Integration


📈 Impact

  • Architected backend systems serving 27,000+ users in production
  • Improved API response times by 40% through caching and query optimization
  • Built and deployed AI-powered automation platforms end-to-end
  • Integrated payment gateways, CRMs, Zoom, QuickBooks, and AI services into production workflows
  • Designed cloud-native microservices from architecture through deployment

💻 Currently Learning

Advanced AI Agents Model Context Protocol (MCP) Kubernetes Go Java + Spring Boot Distributed Systems Design


⭐ Open to Backend Engineer, AI Engineer, Platform Engineer, and Cloud Engineering roles.

Pinned Loading

  1. ai-order-chat-system ai-order-chat-system Public

    **AI Order Chat System** is an AI-powered customer support application that enables users to ask natural language questions about their orders, returns, refunds, shipping, cancellations, and store …

    Python

  2. ai-job-application-tracker ai-job-application-tracker Public

    TypeScript 1