Great on Implement LRU Cache Algorithm, Difficulty Medium
Perfect on Real-Time Dashboard in React, Difficulty Medium
Great on Reverse Digits of a 32-bit Integer, Difficulty Easy
Great on Word Search in Grid, Difficulty Medium
Perfect on Validate Parentheses in a String, Difficulty Hard
Built and deployed scalable full-stack applications using MERN and Next.js, improving user engagement by 35–45% through optimized UI/UX and faster page loads.
Designed RESTful APIs using Node.js and FastAPI, reducing backend response time by 30% via query optimization and efficient data modeling.
Implemented authentication systems (JWT, role-based access), enhancing application security and reducing unauthorized access incidents by 100%.
Optimized MongoDB and SQL queries with indexing and aggregation pipelines, decreasing database load time by 40% under concurrent traffic.
Developed server-side rendered (SSR) and static optimized pages in Next.js, improving SEO performance and increasing organic traffic by 25%.
Integrated third-party APIs and AI services, automating workflows and reducing manual operational effort by 50%.
Built and maintained production applications using NestJS and ReactJS, improving backend performance and frontend responsiveness.
Designed and optimized RESTful APIs, reducing response time by 25% through efficient service and query design.
Configured and customized TYPO3 CMS, streamlining content workflows and cutting publishing time by 40%.
Resolved critical production issues, improving system stability and reducing downtime. Collaborated with cross-functional teams to deliver high-performance web and CMS solutions on schedule.
Contributed to GenAI initiatives, automating content generation and reducing manual effort by 50%.
Explored Agentic AI workflows to enable autonomous task execution and process optimization.
Built responsive web applications using HTML, CSS, and JavaScript, improving user engagement through clean UI and intuitive interactions.
Developed dynamic frontend features with vanilla JavaScript, reducing page reload dependency and improving user experience.
Optimized layouts for cross-browser and mobile compatibility, increasing accessibility and usability across devices.
Implemented form validations and client-side logic, reducing user input errors and improving data accuracy.
Built a web application where users can upload multiple documents and interact with them through an AI-powered chat interface. Implemented document processing, secure authentication, chat history, and payment features using Next.js, MySQL, and cloud integrations




Built a responsive expense tracking application that records daily spending, categorizes transactions, and visualizes financial data through interactive charts. Integrated NLP-based expense entry, allowing users to add transactions using natural language. Implemented AI-powered monthly summaries that highlight spending patterns, identify problem areas, and surface positive financial habits to improve money management.


A comprehensive healthcare patient management application that streamlines patient journeys and administrative operations. Features patient registration, appointment booking, SMS notifications, secure document uploads, and a powerful admin dashboard.




Usman A. is associate Level Developer