Sahil Sharma's Work | Contra
Work by Sahil Sharma
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Sahil Sharma
Building fast, scalable web and mobile apps that solve real
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Pune, India
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Pune, India
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π§ JalSaathi β Smart Water Delivery Ecosystem π About the Project π§ JalSaathi is an enterprise-grade smart water delivery ecosystem designed to connect local water vendors with urban consumers through a unified digital platform. π§ AI-Driven Logistics β Built intelligent delivery workflows with demand prediction, optimal delivery-slot scoring, and automatic order batching to improve fleet efficiency. π Real-Time Delivery Tracking β Implemented live location tracking using Socket.io (http://Socket.io), allowing consumers and operators to monitor delivery movement in real time. π Real-Time Operations Dashboard β Created a centralized Logistics Pulse and live event feed for monitoring orders, fleet activity, system health, and operational performance. π Smart Order Management β Developed workflows for managing customer orders, delivery scheduling, dispatch operations, and fleet coordination. π° Digital Financial Ecosystem β Added a Digital Wallet and Smart Udhar Ledger to digitize prepaid balances and traditional customer credit management. π₯ Multi-Role Platform β Designed dedicated experiences for Admin, Vendors, and Customers, with role-based access and stakeholder-specific dashboards. π Secure Authentication & RBAC β Implemented JWT-based authentication using secure cookies, bcrypt password protection, and role-based authorization middleware. π Business Intelligence β Added dashboards and generated reports to help businesses understand orders, revenue, delivery performance, and operational activity. πΊοΈ Interactive Maps β Integrated Leaflet for location visualization and live delivery tracking. βοΈ Automated Services β Used Node-Cron for scheduled background operations and Puppeteer for automated report generation. π¨ Premium Frontend Experience β Built the frontend with React 19, Vite, Tailwind CSS 4, React Router 7, and Lucide, focusing on reusable components and modern dashboards. ποΈ Scalable Architecture β Structured the application into separate frontend and backend layers with controllers, models, services, AI logic, authentication, and stakeholder-specific pages. π οΈ Tech Stack βοΈ React 19 β’ β‘ Vite β’ π¨ Tailwind CSS 4 β’ π’ Node.js β’ π Express.js β’ π MongoDB β’ π§© Mongoose β’ π Socket.io (http://Socket.io) β’ πΊοΈ Leaflet β’ π§ Heuristic AI Models β’ β° Node-Cron β’ π Puppeteer β’ π JWT β’ π‘οΈ RBAC β’ π Bcrypt.js π― Key Highlights π§ AI Logistics β π Live Tracking β π Smart Dispatch β π° Digital Wallet β π Udhar Ledger β π Operations Analytics β π Secure RBAC β πΊοΈ Live Maps β β‘ Real-Time Communication
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π Cab Booking & Ride Management Platform π¨ Modern UI/UX β Designed a clean, responsive and user-friendly cab booking experience across different screen sizes. βοΈ React Frontend β Built reusable components and structured the application for maintainable frontend development. π Node.js + Express.js β Developed backend APIs and handled core application/business logic. π REST API Integration β Connected frontend and backend through structured APIs for users, rides and application workflows. ποΈ Supabase Backend β Used Supabase with PostgreSQL for database-driven application functionality. π Authentication β Implemented secure user authentication and session-based access. Supabase Auth supports JWT-based authentication and authorization. π Ride Booking Flow β Created intuitive pickup/drop-location and ride-selection workflows. π Ride Management β Structured workflows for managing booking details, ride status and user information. β‘ Real-Time Experience β Designed the architecture to support real-time ride/status updates using realtime communication. π Admin & Analytics β Included operational views for monitoring rides, users and business activity. π± Responsive Design β Optimized the interface for desktop, tablet and mobile experiences. π§© Scalable Architecture β Focused on reusable components, clean API separation and maintainable project structure. π‘οΈ Security & Data Access β Applied authentication and database access controls using Supabase capabilities such as RLS. π οΈ Tech Stack βοΈ React | π’ Node.js | π Express.js | β‘ Supabase | π PostgreSQL | π REST APIs | π Authentication | π Realtime | π Analytics | π¨ Modern UI/UX
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WhatsApp Business Automation Platform β I designed and developed a production-focused mobile platform that helps businesses manage WhatsApp conversations, contacts, broadcast campaigns, message templates, automation workflows, and performance analytics from a single application. I worked across the React Native UI, REST API integrations, real-time messaging flows, authenticated media handling, campaign management, contact workflows, dashboards, and responsive UX. The platform includes an Inbox for customer conversations, campaign creation and delivery tracking, reusable templates, automation/auto-reply workflows, contact management, analytics dashboards, and business-focused reporting. I also focused heavily on creating a polished, modern mobile experience with reusable components, custom data visualizations, smooth interactions, and scalable frontend architecture. Technologies: React Native, TypeScript, REST APIs, real-time communication, WhatsApp Business/Cloud API, authentication, responsive UI, SVG/data visualization.:
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Designed and developed a production-ready corporate website for a leading water treatment company. I built the complete frontend from scratch, focusing on responsive design, reusable components, smooth animations, performance optimization, and a premium enterprise user experience. The website was created to strengthen the company's digital presence while maintaining scalability and clean, maintainable code.
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