Rebake | Mobile Marketplace Platform

A mobile marketplace connecting baking enthusiasts to buy and sell pre-owned bakeware. Built a production-grade backend infrastructure serving iOS and Android clients with real-time features and seamless transaction management.

Backend Developer | Led backend architecture and implementation

Designed and deployed a scalable Node.js backend supporting thousands of concurrent users, enabling seamless marketplace operations with sub-100ms API response times and 99.9% uptime.

Backend: Node.js, TypeScript, Express Database: MongoDB with Mongoose ODM Real-time: WebSockets, Socket.io Infrastructure: RESTful APIs, Push Notifications, Image CDN

Scalable Architecture Engineered a type-safe, modular backend using TypeScript and Node.js. Implemented clean architecture patterns with separation of concerns, ensuring maintainability and testability across the entire codebase.

Optimized Database Design Designed MongoDB schemas with strategic indexing for marketplace operations. Built aggregation pipelines for real-time analytics and implemented compound indexes that reduced query times by 70% for search and filtering operations.

Mobile-First API Design Created RESTful APIs optimized for mobile consumption with efficient pagination, data compression, and intelligent caching strategies. Designed endpoints to minimize payload sizes and reduce mobile data usage.

Real-Time Communication Developed bidirectional messaging system using WebSockets for instant buyer-seller communication. Implemented push notification infrastructure for transaction updates, new messages, and marketplace alerts.

Secure Transaction Flow Built end-to-end transaction management system with secure payment processing integration, order tracking, and automated state management. Implemented comprehensive error handling and rollback mechanisms.

User Management Complete authentication system with JWT tokens, role-based access control, profile management, and reputation tracking through ratings and reviews.

Marketplace Intelligence Advanced search engine with fuzzy matching, category-based navigation, multi-criteria filtering, and relevance-based ranking algorithms for optimal product discovery.

Communication Hub Real-time messaging platform with chat history persistence, push notifications, automated transaction emails, and in-app support system.

Image Processing Pipeline Automated image optimization workflow with multiple resolution variants, lazy loading support, and CDN integration for fast content delivery.

Analytics & Monitoring Built comprehensive logging system with error tracking, performance monitoring, and business intelligence dashboards for marketplace insights.

Implemented data validation layers preventing malicious input and ensuring data integrity

Created automated backup strategies with point-in-time recovery capabilities

Developed efficient data synchronization for offline-first mobile experience

Built rate limiting and security middleware protecting against common vulnerabilities

Designed horizontal scaling architecture supporting future growth

Sub-100ms average API response time

99.9% uptime across production environment

Seamless experience across iOS and Android platforms

Scalable infrastructure ready for user growth