Available for full-time remote & freelance

WordPress engineer
who solves real problems.

I build WordPress systems that solve real business problems. 8+ years at the code level — custom plugins, WooCommerce, Gutenberg blocks (React), performance engineering. No page builders, no plugin bloat. Fast, maintainable code that holds up.

Core Stack
WordPress WooCommerce PHP 8+ Gutenberg/FSE ACF Pro REST API Git MySQL Shopify Core Web Vitals
Saddam Hossen
8+
Years Experience
100%
Job Success
90+
PageSpeed Score
50+
Projects Delivered
Top Rated on Upwork · 100% Job Success · All 5-Star Reviews
Services

What I build for you

Code-level WordPress work — no page builders, no plugin bloat. Clean, maintainable solutions that scale.

01

Custom Plugin Development

OOP PHP plugins from scratch — data imports, admin tools, workflow automation. WordPress coding standards, hooks-first architecture.

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02

WooCommerce Extensions

Custom checkout, payment gateways (Stripe, bKash), product logic, HPOS-compatible order management.

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03

Gutenberg & FSE Blocks

Custom blocks, block patterns, Full Site Editing templates. Reusable component libraries deployable across multiple client sites.

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04

Core Web Vitals & Performance

90+ PageSpeed: caching, Cloudflare CDN, WebP image strategy, critical CSS, script defer/async control.

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05

API Integration

REST API endpoints, CRM integrations, Zapier/Make automation, webhook handlers, third-party connections.

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06

Shopify Development

Custom Liquid themes, sections, app integration, and performance optimization for service-business brands.

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Featured Work

Projects that solved real problems

Case studies with real problems, real solutions, and measurable outcomes.

100hrs → 2hrs
Plugin Development

EventPrime Plugin Customization & Bulk Import

Built a custom CSV/Excel import plugin that reduced data entry from 100+ hours to under 2 hours for 5,000+ event records. Client called it "transformative".

WordPress PHP EventPrime API CSV Parsing
50+ pages
Migration

Multilingual Website Migration (Divi → Elementor)

Migrated 50+ page multilingual site across 4 languages with zero downtime. Pixel-perfect design replication, WPML-compatible, all SEO retained.

WordPress Elementor WPML Migration
60–80% smaller
Open Source

WebP Optimizer Plugin (Open Source)

Published on WordPress.org. Converts images to WebP locally — no external API, no fees. 60–80% image size reduction, direct LCP improvement.

PHP Imagick WordPress Media API Performance
Production
WooCommerce

Custom bKash WooCommerce Payment Gateway

Production-ready WooCommerce payment gateway for bKash — Bangladesh's largest mobile payment. Handles IPN, payment verification, and order status.

WooCommerce PHP bKash API Payment
42 → 91 score
Performance

WooCommerce Core Web Vitals Optimization

Optimized a high-traffic WooCommerce store from PageSpeed 42 to 91. Cloudflare CDN, LiteSpeed cache, WebP conversion, critical CSS, and script control.

WooCommerce Cloudflare LiteSpeed Critical CSS
UAE Market
Shopify

Shopify Home Decor Store — UAE Market

Performance-first Shopify store for UAE-based home decor brand. Custom sections, metafield architecture, Core Web Vitals targets for UAE and North American markets.

Shopify Liquid Custom Theme Performance
About Me

8+ years building WordPress at the code level.

I'm Saddam Hossen, a WordPress engineer from Jamalpur, Bangladesh. I write OOP PHP, design plugin architectures, build WooCommerce systems, and ship performance-first code. No Elementor, no Divi — Gutenberg custom blocks, ACF-based architectures, clean CPT systems.

Top Rated on Upwork · 100% job success · All 5-star reviews. I've built bulk import systems that cut 100+ hours to 2, published open-source plugins on WordPress.org, and migrated 50-page multilingual sites with zero downtime.

Technical Stack
PHP 8+ (OOP, PSR)
WordPress Core & Hooks
WooCommerce Extensions
Gutenberg / FSE Blocks
MySQL & $wpdb
REST API Development
JavaScript (ES6+)
React (Block Editor)
ACF Pro & CPT
Core Web Vitals
Git & GitHub
WP-CLI & Composer
Cloudflare & CDN
Shopify (Liquid)
Client Reviews

What clients say

Every review is 5 stars. Every project is delivered to spec. That's not luck — it's process.

★★★★★

Star ratings are not enough to describe the work Saddam did for us. He customized an extremely complicated WordPress plugin by creating his own data import system. We went from 100+ hours of manual work to just 2 hours. Exceptional work, exceptional developer.

EC
EventPrime Client
Nonprofit Organization · Upwork
★★★★★

Excellent freelancer. I have been working with him for years — he is reliable, skilled, and a genuinely excellent person to work with. Highly recommend.

LC
Long-term Client
eCommerce Business · Upwork
★★★★★

Saddam did an outstanding job transforming our website from Divi to Elementor, replicating the content and design with exact precision across multiple languages. Zero downtime, pixel perfect.

MC
Migration Client
E-commerce Business · Upwork
★★★★★

Amazing job, will hire again. Professional, responsive, and delivered high-quality work on time.

WC
Web Scraping Client
Tech · Upwork
Open Source

Published on WordPress.org

Plugins I've built and released publicly — real code, real users, real impact.

Saddam Hossen WebP Optimizer

Converts images to WebP locally — no API, no fees. Reduces file sizes 60–80%, directly improves Core Web Vitals LCP scores. 100% free on WordPress.org.

WordPress.org 60–80% smaller No external API

Custom bKash WooCommerce Gateway

Production-ready WooCommerce payment gateway for bKash — Bangladesh's largest mobile payment. Handles IPN, payment verification, and order status updates.

Open Source WooCommerce Bangladesh
Blog

WordPress development insights

Practical tutorials and deep-dives from 8+ years of professional WordPress development.

How I Built a WordPress Bulk Import Plugin That Cut 100+ Hours to 2

A client needed 5,000+ event records imported into EventPrime. Manually it took over 100 hours. I built a custom CSV/Excel import plugin with validation, AJAX progress tracking, and error handling. Here is the full build — architecture, code patterns, and the result.

Coming soon

WooCommerce PageSpeed 42 to 91: The Exact Process

A high-traffic WooCommerce store was scoring 42 on PageSpeed. Here is exactly what I did: Cloudflare CDN setup, LiteSpeed cache configuration, WebP image conversion, critical CSS extraction, and query-level database tuning. No plugins guessing — all intentional.

Coming soon

Building SiteProof AI: Automated WordPress Audits with Claude 3.5 Sonnet

I kept seeing the same security, performance, and compliance issues across client WordPress sites. So I built SiteProof AI — a plugin that runs 4-layer automated scans and generates fix suggestions using Claude 3.5 Sonnet API. This is how I built it.

Coming soon
Let's Work Together

Ready to build something great?

Full-time remote roles and freelance projects welcome. I reply within 24 hours.

Or email directly: saddam.wp007@gmail.com