Hamza Iftikhar

Architected and delivered a new backend using Google Cloud Functions, Node.js, TypeScript, and Firebase, replacing a legacy PHP/WordPress system and reducing the codebase by ~60%. Migrated 100% of existing users to the new infrastructure with zero data loss and under 2 hours of planned downtime. Reduced system complexity by ~40% using modular architecture, cutting average bug resolution time by ~50%.

Redesigned the Sonder Coach website end-to-end, improving page load speed by ~35% and increasing user engagement by ~20%. Built the “Chat with Coach” module from scratch; it became the #1 most-used feature, driving ~25% increase in daily active user sessions. Automated 5+ customer care workflows using BullMQ cron jobs, reducing manual support workload by ~40% and improving response time by ~60%.

Built POS software from scratch using React, Node.js, and PHP, reducing the development timeline by ~30%. Integrated 3+ third-party APIs (Shopify, FBR, Zatca) contributing to ~15% sales revenue increase and ~25% client base expansion. Optimized transaction processing by ~20%, cutting ~3 seconds from each transaction cycle for 500+ daily users. Implemented RabbitMQ, Redshift, and Redis infrastructure achieving ~99.9% uptime and supporting ~25% more concurrent users.