
M.Mujahid
AI Assisted Software Engineer, Python Developer, QA, Database, Bug Fixing
Habilidades

Revisa mis servicios


Porfolio
Experiencia laboral
Software Engineer, Developer | Freelance / Independent
Freelancer.com • Freelance
Aug 2021 - Present • 5 yrs
Built a complete retail management system from scratch – handling sales, inventory, credit management, accounting, and backups. Key Achievements: ✅ Designed and built a full-featured POS system with barcode scanning, cart management, and receipt printing. ✅ Created a complete database schema (20+ tables) with relationships, triggers, and indexes. ✅ Implemented credit management with overdue alerts, recovery sheets, and group‑based member tracking. ✅ Built a loyalty points system – customers earn and redeem points on cash purchases. ✅ Developed promotions engine – BOGO, B2G1, product discounts, and cart discounts. ✅ Integrated double‑entry accounting – Profit & Loss, Balance Sheet, Trial Balance, Cash Flow. ✅ Designed automatic backup system – local, external drive, and daily email backups. ✅ Built offline licensing system – 15‑day trial + lifetime license with machine ID verification. ✅ Packaged the application into a standalone Windows EXE using PyInstaller. ✅ Performed QA testing, bug fixing, and system maintenance. ✅ Built a complete POS system with 20+ database tables. ✅ Implemented double‑entry accounting system ✅ Designed offline licensing with 15‑day trial + lifetime activation Technologies: Python, SQLite, Tkinter, SQL, Git, PyInstaller, ChatGPT (AI‑Assisted Development)