mostafa khansa

Full Stack Product Engineer with 13 years of experience building and contributing to web applications that are used by 2,000+ companies and generating 100K monthly revenue, including subscription-based VAT-Compliant ERP and offline-first POS. Throughout my career, I shipped many critical, in-demand features, e.g. Sales Invoice that posts to ledger, offline first POS that syncs with back office. I owned code that junior team members depended on, Database Atomicity, Core Logging, Financial Calculations: VAT, Supplier Prices, Client Discounts, duplicating and transferring from one document type into another and much more. I analyze requirements, check for system compatibility, present trade-off, and address edge cases without compromise. I choose to balance correct business logic, fast delivery, and ease of use. I believe the best solution is a simple one.