full stack developer with 3+ years of experience

ayaan pathan • Peerlist

Designed and developed a full-stack, multi-tenant customer support platform that unifies real-time live chat and outbound email campaigns into a single agent dashboard. Built for teams that measure support in seconds, the platform allows businesses to engage with visitors instantly via a drop-in chat widget and run targeted email campaigns from imported lead lists. Key Features & Technical Achievements: Real-Time Live Chat: Engineered a low-latency, WebSocket-driven (Socket.IO) chat architecture with live typing indicators and presence tracking, eliminating the need for polling. Embeddable Widget Architecture: Developed a secure, cross-domain widget that drops into any website with a single <script> tag. The widget mounts via an iframe, bypassing CORS complexities, with its appearance (colors, icons, messages) controlled entirely from the server without requiring code changes. Multi-Tenant Workspaces: Implemented strict tenant boundaries across the stack. Every visitor, conversation, and campaign is scoped to a workspace, enforced via JWT authentication and database-level filtering. Outbound Email Campaigns & Queues: Built an integrated email agent utilizing Redis and BullMQ to handle bulk outreach. Features include CSV lead imports, merge-tag templating, rate limiting, and robust open/click/unsubscribe tracking. Secure by Design: Integrated AES-256-GCM encryption for SMTP credentials at rest, HMAC-signed tracking links to prevent forgery, bcrypt password hashing, and rigorous CSV export sanitization to prevent formula-injection attacks. Tech Stack: Next.js 16 (App Router), React, Zustand, Node.js, Express.js (v5), MongoDB, Socket.IO, Redis, BullMQ, Tailwind CSS.

codinginfobot

Developed an end-to-end property management platform that streamlines rent collection, tenant onboarding, and daily operations. The project consists of a React Native mobile app for tenants, a React.js administrative web dashboard, and a secure Node.js/MongoDB backend. Key Achievements: • Integrated Razorpay for cross-platform rent payments and fee tracking. • Automated tenant onboarding by generating PDF rental agreements with digital e-signatures (react-signature-canvas). • Built a real-time notification engine utilizing Firebase (push notifications) and automated WhatsApp alerts. • Designed complex role-based access control to securely handle data for Admins, Tenants, and Local Authorities. • Optimized API response times and background task processing using Redis and Node-cron. Tech Stack: MERN Stack (MongoDB, Express, React, Node.js), React Native, Redis, Razorpay, WebSockets.

truehostel

<p>CodeKairo is a modern coding and career platform built for developers to practice, compete, and prepare for real-world opportunities. It brings coding challenges, 1v1 battles, mock interviews, placement tests, aptitude practice, bug bounty challenges, resume &amp; ATS analysis, and more into one platform.</p>