Ahmed Y. Othman

Architected and delivered an automated backend service for external store lead ingestion, driving $405K USD revenue in the first month. Led legacy-system decommission with 6+ integrations, migrating product and variant data to PostgreSQL with zero downtime; migrated WhatsApp bot platform from Unifonic to Botpress, reducing costs from $5k to $600/month and enabling AI features. Consolidated five cart APIs into two using PostgreSQL, cutting 47K redundant monthly calls. Migrated core services from Node.js to Spring Kotlin using DDD, boosting performance by ~90%. Migrated MongoDB data to PostgreSQL and improved the Get Orders API by 80% in response time. Upgraded a legacy Node.js service to latest LTS, reducing startup time by 20%; improved tests by 80% (unit) and 68% (e2e). Built internal tooling in Golang to boost engineering productivity.

Designed and built a scalable backend API using Hexagonal Architecture; integrated Redis, Nginx, Socket.IO, and OAuth. Enhanced real-time group chat performance by redesigning the status update schema (last-read/seen), reducing response time by 20%. Implemented an Azure-based CI/CD pipeline, cutting deployment time by 40%. Built a notification microservice for email, push, and in-app delivery with tracking and optimization logic.

Built a cross-platform mobile app in Flutter using BloC/Provider for scalable state management. Worked on advanced food search queries leveraging Apache AGE for graph database querying.