Built a production-grade SaaS platform for stock screening and strategy backtesting with unified backend architecture, dual-database system, and scalable data pipelines for real-time financial analysis.

Tools: Node.js, Next.js, React Native, MongoDB, SQLite, Stripe, Express.js, Alpha Vantage

Features:

• Architected and built a unified Node.js backend serving web, admin, and mobile clients via a single API layer
• Designed a dual-database system (SQLite for high-frequency caching, MongoDB for durable business-critical data) for performance and reliability
• Built a server-side stock screening and backtesting engine supporting multi-strategy analysis (RSI, MACD, momentum) with performance metrics
• Implemented scalable market data pipeline with caching and rate-limit handling for external APIs (Alpha Vantage)
• Developed Stripe-based subscription system with webhook-driven billing sync, feature gating, and secure multi-tenant access control

Built high-traffic scalable student commuting platform handling 57K+ page views and 3,500+ verified users in 100 hours.

Tools: Node.js, React, Socket.IO, MongoDB, Express.js, WebSocket

Features:

• Developed Socket.IO infrastructure supporting concurrent chat sessions and instant notifications
• Built multi-parameter matching system processing route, time, university, and safety preferences with sub-second response times
• Implemented user verification, review systems, and community moderation tools while maintaining platform usability
• Applied database indexing, query optimization, and load balancing for 16K+ unique visitors in 100 hours
• Secure session-based authentication with role-based access.

Built privacy-first browser-based AI background remover delivering real-time mask preview, instant segmentation, and downloadable results. And no server required.

Tools: React, TypeScript, Vite, transformers.js, rmbg-1.4, Web Worker

Features:

• Integrated rmbg-1.4 model with transformers.js for fast browser ML inference.
• Engineered non-blocking Web Worker pipeline for smooth UI and rapid processing.
• Developed drag & drop upload, instant mask visualization, and downloadable results.
• Designed privacy-first architecture—100% data remains local; no external uploads.
• Optimized for mobile and desktop with 99.9% browser compatibility.

A scalable wholesale platform built for B2B businesses, featuring a full admin dashboard, POS integration, inventory control, and a responsive storefront.

Tools: Next.JS, MongoDB, Express, Tailwind CSS, Stripe API

Features:

• Built conditional pricing rules with customer segmentation and volume-based discounts for B2B negotiations
• Developed customer-role creation with 130+ granular permissions across catalog, checkout, and dashboard views
• Built-in POS system with real-time stock synchronization.
• Created product management, inventory tracking, and order fulfillment system with live metrics and automated stock alerts
• Applied indexed queries, server-side pagination, and caching strategies to handle 1,000+ SKUs with 95+ Lighthouse score

Interactive platform allowing students to browse, search, and filter academic e-books by chapter or exercise.

Tools: Next.js, Redux Toolkit, Tailwind CSS, Mantine UI, Express.js, MongoDB, MeiliSearch, React-PDF

Features:

• Designed normalized MongoDB structure handling complex user, content, and gamification relationships
• Built live leaderboards and progress tracking using MongoDB and Express.js with optimized queries
• Created custom MeiliSearch implementation with fuzzy matching, code discovery, and caching
• Architected point systems and achievements using Redux Toolkit for sophisticated state management

Built full-stack multiplayer game with WebSocket architecture.

Tools: React, NodeJS, Socket.IO, Charts, Firebase, Zustand

Features:

• Built WebSocket-based system with room management and state synchronization for concurrent gaming sessions
• Developed server-side validation, timing verification, and object detection algorithms preventing cheating
• Created performance tracking, match statistics, and interactive leaderboards with data visualization
• Built adaptive difficulty scaling, achievement mechanics, and cross-platform responsive interface

Built multiplayer quiz platform with GeoJSON-powered question generation.

Tools: React, NodeJS, Socket.IO, GeoJson, Charts, Firebase, Zustand

Features:

• Built sophisticated engine processing geographical datasets to dynamically create infinite quiz questions from countries, states, and regional data
• Developed WebSocket-based system with automated matchmaking, room management, and state synchronization for concurrent quiz sessions
• Created time-based bonuses, streak multipliers, and server-side anti-cheat validation ensuring fair competitive gameplay
• Built Chart.js-powered performance tracking with match statistics, leaderboards, and trend analysis

Interactive SaaS platform for filing and electronically signing W9 forms, along with real-time TIN verification.

Tools: Next.JS, TailwindCSS, React-pdf, Paypal, Stripe, Firebase, Zustand

Features:

• Integrated e-signature support to eliminate physical paperwork.
• Real-time TIN checking and result saving for future reference.
• Email delivery system for completed forms.
• User-friendly W9 form editor with validation.
• Stripe and PayPal integration with subscription model support.