Safwan Usaid Lubdhak
About
Safwan Usaid Lubdhak is a software developer based in Bangladesh. He, which is to say, I, have a few years of experience in web development and have worked with a wide range of technologies. I love to talk about nerd stuff, too, so hit me up if you're into it.
Projects
Pacioli - An AI Ledger That Never Trusts the AI With Math
A deterministic double-entry bookkeeping engine where the LLM only proposes; every number and every write is computed and gated by Python.
A Circular Alt+Tab Switcher for KDE Plasma 6
A KWin window switcher that arranges windows as pie slices around the cursor - live thumbnails, multi-ring layout, and full theme integration in pure QML.
Three Apps in Raw PHP: A Lesson in SQL Transactions
A café, a library, and a gym - three management systems built in plain PHP and MySQL with no framework, where the real lessons were all about transactions.
A SEO Optimized Website for Green Bangla Foundation
This blog post explores how I created and optimized a WordPress website for speed and mobile responsiveness, achieving top scores on Google Lighthouse.
NI Driving Test Routes
A showcase of how I developed a website focused on NI driving test routes, with a strong emphasis on speed, responsiveness, and SEO.
Experience
Freelance Web Developer
Remote clients
2019 - Present
- WordPress sites for small businesses - hosting, domains, email setup, and redesigns.
- Security work: malware cleanup, patching vulnerabilities, hardening compromised sites.
- Infrastructure migrations - moving DNS, email routing, and CDN across providers.
Education
BRAC University
BSc. in Computer Science and Engineering
- Completed core courses including Data Structures, Algorithms, Discrete Mathematics, Digital Logic Design, Data Communications, Operating Systems, and Database Systems.
- Advanced coursework in Artificial Intelligence, Neural Networks, Compiler Design, Computer Architecture, Computer Networks, and Software Engineering.
Posts
Skills
Languages
- Python
- Java
- C++
- Dart
Frontend
- JavaScript
- HTML
- CSS
- React
- Tailwind CSS
- Bootstrap
- Vue.js
Backend
- PHP
- MySQL
- Node.js
- Express.js
- MongoDB
- Django
- Laravel
- Java Spring Boot
Technologies
- WordPress
- Astro
- Next.js
- Gatsby
- GraphQL
- Stripe
- Firebase
Others
- Git
- Linux
- AWS
- Nginx