Amit Kumar

Full-stack MERN developer with 3+ years of hands-on production experience building multi-role Agri-commerce platforms, real-time systems, and AI-integrated tools. Specializes in backend architecture (Node.js + MongoDB + Redis), job-queue orchestration (RabbitMQ), WebSocket-driven features, and embedded Power BI analytics. Comfortable owning complete feature verticals — from Mongoose schema design to React UI — and shipping maintainable, readable code in fast-moving team environments.

Software Developer – Backend & Full-Stack at FarmerShop Tech India Private Limited (2023-05 – Present)

Developed and maintained a production-grade Agri-commerce platform serving Super Admin, State/Region Admins, Stores, Warehouses, Vendors, Suppliers, Customers, Employees, and Drivers.

• Designed the end-to-end stock flow: Supplier → Warehouse (challan/barcode scan) → Store → Customer, including Mongoose models for StockRequest, Challan, and WarehouseInventory.
• Built barcode scan-and-receive flow for warehouse employees with geospatial store finder using MongoDB 2dsphere indexes.
• Created packet creation workflow that converts offline warehouse stock into online-sellable variants.
• Authored challan API enrichment and resolved sparse index issues for optional Aadhaar ID fields.
• Built coupon lifecycle engine (draft → scheduled → published) with RabbitMQ for scheduled activation and auto-expiry.
• Implemented per-user redemption tracking and discount unification in Mongoose schema; removed legacy fields during a schema cleanup sprint.
• Integrated Aradhya coins system: 1 coin per ₹250+ order for customers and employees, redeemable online and offline.
• Designed role-gated approval flow: store/vendor coupons require admin approval; admin-created coupons bypass approval.
• Implemented Socket.IO notification pipeline for employee creation, request approve/decline/reopen events.
• Shipped interim polling fallback when WebSocket message delivery was inconsistent; later integrated proper acknowledgement-based blue-tick delivery status.
• Optimized chat loading from 10–30 s to near-instant by paginating history (last 1–3 messages first, scroll-up pagination).
• Embedded Power BI dashboards with JWT bearer auth and X-API-Key fallback; implemented role-based data filtering via backend aggregation.
• Built store customization module with MongoDB nested subdocuments per section (header, hero banner, product grid) and a draft/active/archived state machine with partial unique index per store.
• Created holiday management system (state-scoped, multi-admin select, advance scheduling) and attendance clock-in/out with duplicate-free daily card logic.
• Built admin login pages in Cloudscape Design System, stock management dashboard, requests dashboard, and offer management UI with approval workflow.
• Created sequence diagrams for coupon system, vendor stock flow, and supplier-warehouse-store pipeline used in team documentation.

Bachelor of Technology in Computer Science & Engineering – West Bengal University of Technology (2013 – 2017)