Full-Stack & WordPress Specialist

I build powerful websites & web applications.

Hi, I'm Sadi Jubair — a WordPress & Full-Stack Web Developer. I specialize in custom WordPress architectures, modern JavaScript & Next.js applications, REST APIs, and scalable digital platforms that solve real-world problems.

Explore Selected Work Let's Work Together

5+

Years Experience

50+

Projects Delivered

30+

Happy Clients

10+

Tech Stacks & Tools

Proven Delivery & Live Systems

Selected Case Studies

Explore real-world platforms and systems I have engineered, highlighting client challenges, architecture, and live production deployments.

View All 6 Projects
https://pbchs.edu.bd/
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PBCHS School Management System in MERN Stack
MERN Stack Live Production

PBCHS School Management System

Challenge

PBCHS required an end-to-end digital management platform to manage student academic records, circular notices, admission workflows, and faculty information.

Solution

Architected and built a custom MERN application with dynamic notice filtering, admin dashboard control, student data management, and responsive interfaces.

Impact & Result

Centralized school administration for thousands of students and guardians with instant notice distribution and robust uptime.

Technologies Used
MongoDB Express.js React Node.js Tailwind CSS
Visit Live Site All Details →
https://www.wasiamadrasah.edu.bd/
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Wasia Madrasah Management System
Institutional Portal Live Production

Wasia Madrasah Management System

Challenge

The institution required a structured academic portal to showcase departments, coordinate admissions, publish circulars, and archive madrasah resources.

Solution

Built a customized web platform with dynamic department listings, teacher profiles, examination results publication, and notice filtering.

Impact & Result

Provided complete administrative independence for staff and delivered high accessibility for parents and students across Bangladesh.

Technologies Used
Web Application PHP / WordPress MySQL Tailwind CSS
Visit Live Site All Details →
https://dhrubok.app/
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Dhrubok Learning Management System
LMS SaaS Course Monetization

Dhrubok Learning Management System

Challenge

Dhrubok needed an online education hub with structured video lesson modules, secure access controls, course enrollment flow, and student progress tracking.

Solution

Developed a dedicated LMS web application with topic-wise breakdowns, interactive quiz assessments, automated handouts, and payment gateway checkout.

Impact & Result

Enabled smooth online course monetization and provided students with an uninterrupted, engaging digital classroom experience.

Technologies Used
Next.js / React Node.js LMS Architecture Tailwind CSS REST APIs
Visit Live Site All Details →
https://ispctg.live/
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ISP Coaching Center Management System
Coaching Platform Live Production

ISP Coaching Center Management System

Challenge

ISP Chattogram required a centralized system for batch scheduling, routine publishing, exam result notifications, and student notices.

Solution

Engineered a dedicated web application with real-time routine management, batch-wise filtering, result publishing, and notice distribution.

Impact & Result

Significantly reduced administrative coordination time and improved academic transparency for hundreds of enrolled candidates.

Technologies Used
Web Application React Node.js Tailwind CSS MySQL
Visit Live Site All Details →
Core Capabilities

What I Build & Deliver

Tailored engineering services designed to turn complex business requirements into high-performing, scalable digital products.

Custom WordPress Development

Custom themes built from scratch without page-builder bloat, bespoke plugins, custom post types, Advanced Custom Fields (ACF), and tailored WooCommerce stores.

  • ✔ Bespoke Gutenberg & ACF Themes
  • ✔ Custom Plugin Architecture & Logic
  • ✔ WooCommerce Customization & Flow

Web Application Development

Interactive, high-speed single-page and server-rendered web applications utilizing Next.js, React, modern JavaScript (ES6+), and scalable backend logic.

  • ✔ React & Next.js Full-Stack Apps
  • ✔ Responsive & Accessible Interfaces
  • ✔ Secure Authentication & State Logic

LMS & Education Platforms

Complete school management systems, teacher portfolios, academic notice boards, online test portals, QR code verification, and PDF certificate generation.

  • ✔ School & College Management Portals
  • ✔ Automated Grading & Report Cards
  • ✔ Video Modules & Handout Downloads

API & System Integration

Connecting web applications to third-party tools, payment gateways (bKash, Nagad, SSLCommerz, Stripe), external REST APIs, and automated webhooks.

  • ✔ Custom RESTful API Endpoints
  • ✔ Payment Gateway & SMS Gateways
  • ✔ Automated Data Sync & Webhooks

Performance & Optimization

Enhancing page loading speeds, optimizing database queries, configuring advanced server caching, reducing asset payloads, and achieving 90+ Core Web Vitals.

  • ✔ Core Web Vitals & Speed Tuning
  • ✔ MySQL & PostgreSQL Query Optimization
  • ✔ Security Hardening & Malware Defense

Technical Consulting & Scaling

Code reviews, architectural consulting, database migrations, server scaling on VPS/cPanel/Cloudflare, and long-term retainer support.

  • ✔ Architecture & Stack Advisory
  • ✔ Cloudflare & DNS Configuration
  • ✔ Safe Migrations & Zero Downtime
Engineering Philosophy

Building Systems with Discipline & Craft

Every architectural choice, database schema, and line of code is engineered for maintainability, speed, and real-world business results.

Sadi Jubair - WordPress & Full-Stack Web Developer

Sadi Jubair

WordPress & Full-Stack Engineer

5+ Yrs Exp

Core Developer Specs

Location Chattogram, Bangladesh (GMT+6)
Working Model Remote / Worldwide
Specialization Custom WP & Full-Stack MERN
Code Quality Zero-bloat & Modular

I build digital products that solve real problems.

I am Sadi Jubair, a full-stack web developer based in Bangladesh with over 5 years of hands-on experience developing custom WordPress ecosystems, modern JavaScript web applications, and database-driven digital solutions.

My work spans the entire software development lifecycle: from planning backend data architectures and crafting clean custom PHP/WordPress themes, to building reactive Next.js interfaces, integrating payment/SMS gateways, and optimizing production environments for speed and reliability.

01 / ARCHITECTURE

Clean & Modular Code

Structured for long-term maintainability. I eliminate messy dependencies and plugin bloat in favor of native, robust custom code.

02 / PERFORMANCE

Speed & Core Web Vitals

Sub-second load times, efficient database queries, asset minification, and smart caching strategies that drive real conversion.

03 / USABILITY

Client-First Admin UX

Intuitive backend control panels and custom fields so non-technical team members can manage content frictionlessly.

04 / RELIABILITY

Production Security

Strict input sanitization, hardened APIs, automated data backups, and zero-downtime deployment pipelines.

“

Great software isn't just about what runs today — it's about code that remains fast, secure, and easy to maintain 3 years down the line.

Discuss Your Project GitHub Activity
Tools & Technologies

Technical Ecosystem

A categorized overview of the languages, frameworks, databases, and tooling I use in production.

Frontend & UI

Next.js & React Modern Apps
JavaScript (ES6+) Core Logic
Tailwind CSS Styling
HTML5 / CSS3 Semantics
Figma UI/UX Design

Backend & CMS

WordPress Core Custom CMS
PHP (7.x - 8.x) Backend Logic
Custom Plugins Architecture
WooCommerce E-Commerce
REST APIs Endpoints

Databases & Cloud

MySQL Relational DB
PostgreSQL / Supabase Modern DB
Cloudflare DNS & CDN
cPanel / VPS Hosting
Git & GitHub Version Control

Architecture & Speed

Core Web Vitals 90+ Scores
Object Caching Redis / OPcache
Security Hardening Defense
Technical SEO Schema / JSON-LD
Payment Integration bKash/Stripe
Initiate Project

Let's Build Something Remarkable

Have an upcoming project, a WordPress platform to upgrade, or a custom web app to build? Send a message and let's get started.

Direct Channels

Reach out directly via email, WhatsApp, or phone for quick inquiries.

Email Address

hello@sadi.com.bd

WhatsApp & Mobile

+880 9696 066222

Location

Chattogram, Bangladesh

Professional & Social Proof