Currently solving business problems and modernizing legacy systems in Java ☕, Spring Framework 🍃 and Spring Boot
My Resume | My LinkedIn | Email me at: abdurrahman.tantawi@gmail.com
- Pinpointed and fixed a critical SSO authentication bug for X (formerly Twitter) in Laravel Socialite, with a pull request with a clear solution document
2. ZAXEG [ZATCA XML E-invoice Generator] (In Progress)
Currently building a robust Java/Spring Boot SDK for Saudi Arabia's ZATCA compliance. This builds upon my foundational prototyping:
- PHP ZATCA XML Parser: Prototyped the complex XML generation and cryptographic hashing required for Phase 2 clearance.
- Laravel ZATCA API Prototype: Developed an initial integration guideline package with detailed documentation for the Zakat, Tax & Customs Authority APIs.
3. Moyasar PHP
- Collaborating with hamoda-dev to build a seamless integration experience for PHP Developers with one of the lead payment gateways in Saudi Arabia
- Latest PR (Jun 2026): Refactoring Invoice Module (Enhance Directory Structure, Naming, Data Types, Type Casting & Logic Flow)
4. I have Explained Head First Object-oriented Analysis & Design Book's Content In Arabic, in this YouTube Playlist
- Building a solid fundamental in Operating Systems, thanks Hussain Nasser
- Diving Deeper in Spring Framework, thanks Laurentiu Spilca
Last Updated: June 2026


