Great score on Implement LRU Cache Algorithm, Difficulty Hard
Great score on Real-Time Dashboard in React, Difficulty Medium
Great score on Reverse Digits of a 32-bit Integer, Difficulty Hard
Great score on Validate Parentheses in a String, Difficulty Medium
Great score on Word Search in Grid, Difficulty Medium
Developed responsive AI solutions with React applications, boosting user engagement and increasing retention by 25%
Designed REST APIs for a multi-tenant SaaS CRM, implementing secure role-based access for multiple user types
Engineered a backend system to support a drag-and-drop template editor with PDF export, cutting report time by 5x
Developed real-time API endpoints for a modular dashboard, efficiently serving live data to over 1,000 users
Engineered a Node.js backend for an OMS, using Supabase RLS to ensure strict data isolation for vendors and logistics
Implemented end-to-end AI LLM solutions for clients, building real-time dashboards and integrating third-party services
Built a secure QR voucher redemption & scanner system via a REST API, leveraging Supabase Auth for user verification
Integrated PayPal APIs to automate player payouts, reducing manual intervention and reconciliation time by 90%
Developed 100+ user-facing features in NextJs and Node, reducing latency by 20% and improving overall optimization
Developed and optimized REST APIs with ReactJs and NextJs, enhancing dataset retrieval by 30% for 10k+ requests
Improved and optimized site performance by 25% for 1,000+ daily visitors through advanced Redux and Next.js SSR
Built operations system for wholesale business with RLS & Role based access for vendors/Suppliers, logistics, staff and Admin. Developed order, catalog, CRM, and ticketing management systems for seamless business workflow automation. Implemented data isolated vendor portals with bulk orders, Invoice document handling, and payments tracking.
Built full-stack city guide app with Next.Js, Supabase & Stripe for 1K+ listings and real-time maps, vouchers and events. Developed secure QR voucher redemption and Secure scanning system with Supabase auth, boosting engagement by 60%. Integrated Stripe for tiered user & business subscriptions automating payments, renewals, and regional access System. Built scalable CMS and analytics modules empowering admins to moderate 500+ businesses, track and redemptions.




Developed a scalable multi-tenant SaaS platform with role-based access for 4+ user types using Next.js and Appwrite. Engineered a modular CRM dashboard supporting real-time data for 1000+ users and customers across companies. Implemented a drag-and-drop template editor with PDF export, enabling 5× faster generation of branded OHS reports.




Integrated a Unity game with a Next.js and Appwrite dashboard, enabling real-time tracking for 1K+ players and transactions. Implemented tier-based tournament access with PayPal and Bankful, automating payout and reducing manual errors by 90%. Developed IP geo-restrictions, player ban tools, and live gameplay monitoring to enforce compliance and ensure fair play.






Used Node.js and Socket.io to build a custom HTTP server, improving file reading, updating and writing by 50%. Built buffer and streaming functionalities, led to boosting performance by 40% and improving multi-file efficiency. Implemented Git version control and automation, ensuring project management and code integrity with ease.

Ahsan K. is mid-senior Level Developer