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zuddin. Backend / WP Engineer
Available for Backend & WordPress engineering roles

PHP Backend & WordPress Engineering, crafted.

Senior Software Engineer with 8+ years of experience architecting high-traffic WordPress platforms, bespoke Gutenberg & ACF Pro solutions, custom PHP APIs, and high-performance backend engines. Proven track record across 18+ production client sites shipped worldwide.

Stack: PHP 8.3 · WordPress / FSE · OOP · MySQL · Gutenberg + ACF Pro · Redis · Cloudflare · Laravel · Docker
Portrait of Zahid Uddin, Senior Backend Developer
Zahid Uddin
Senior Software Engineer · Dhaka, BD
8+ Yrs

// 01_about

Architecting scalable platforms with zero compromise.

I specialize in backend engineering, custom WordPress theme/plugin systems, high-speed API endpoints, and database optimization. My focus is writing clean, maintainable PHP and delivering lightning-fast production platforms.

8+
Years Backend Experience
18+
Production Sites Shipped
<100ms
Avg API & Server Response
95+
Core Web Vitals Scores

With over 8 years in commercial web development, I bridge the gap between heavy enterprise backend logic and smooth client-facing CMS platforms. I have built admission portals handling thousands of concurrent applicants (Laravel + Vue), custom WooCommerce engines processing bulk orders, and enterprise WordPress architectures powered by ACF Pro, Gutenberg, Redis Object Cache, and Cloudflare edge delivery.

Whether working directly with product founders or within distributed Agile engineering squads using Jira, Bitbucket, and GitHub, I guarantee code reliability, tight security, and clean separation of concerns.

// 02_services

Where I add the most value.

Focused backend engineering services designed for business longevity, high performance, and rapid editor workflows.

01 / CMS

Custom WordPress & Gutenberg Engineering

Bespoke Full Site Editing (FSE) themes, custom Gutenberg blocks with ACF Pro, and modular component architectures built without heavy visual builder bloat.

Custom Themes ACF Pro Gutenberg Blocks CPT & Taxonomies
02 / BACKEND

PHP Architecture & REST APIs

Clean object-oriented PHP (OOP), secure custom REST API endpoints, webhooks, third-party CRM integrations, and relational MySQL database optimization.

PHP 8.3 REST API MySQL Indexing Laravel
03 / PERFORMANCE

Core Web Vitals & Caching

Server-level OPcache tuning, Redis Object Cache, Cloudflare edge caching rules, SQL query profiling, and asset pipeline minification for 95+ PageSpeed scores.

Redis Cache OPcache Cloudflare Core Web Vitals
04 / ARCHITECTURE

Headless CMS & Decoupled Platforms

Decoupled WordPress backends feeding modern React / Next.js frontends via GraphQL or REST APIs, combining editorial flexibility with cutting-edge UI speeds.

Headless WP Next.js GraphQL WooCommerce

// 03_process

From architecture to scale.

A disciplined, transparent engineering methodology built for shipping rock-solid production software on time.

STAGE 01
30-45 MIN READY TO GO

Discovery & System Scoping

We review technical requirements, existing codebases, performance bottlenecks, and target user flows with clear next steps.

  • Scope & requirements doc
  • API & plugin dependency map
  • Timeline & milestone plan
STAGE 02
2-3 DAYS PLANNING

Architecture & Data Modeling

Mapping custom post types, ACF Pro fields schema, database indexing, caching strategies, and server configuration before coding.

  • ERD database schema
  • ACF / Gutenberg block spec
  • Security & server plan
STAGE 03
ITERATIVE BUILD

Core Backend & Theme Engineering

Clean PHP implementation, custom theme and plugin engineering, API integrations, and regular staging deployment previews.

  • Clean OOP PHP code
  • Figma-to-Gutenberg fidelity
  • Live staging previews
STAGE 04
1-2 DAYS QUALITY

Performance Tuning & Security Auditing

Query Monitor profiling, Redis object caching, OPcache verification, Lighthouse 95+ CWV optimization, and security hardening.

  • Query Monitor zero-slow query
  • Core Web Vitals green pass
  • Cloudflare WAF / SSL setup
STAGE 05
2 HOURS LAUNCH

Production Deployment & Hypercare

Zero-downtime DNS switchover, full documentation walkthrough for editors, and a 30-day warranty window for continuous stability.

  • Zero-downtime rollout
  • Editor training & docs
  • 30-day dedicated hypercare

// 04_architecture

Interactive Backend Profiler.

Inspect real-world backend architectures, caching benchmark telemetry, and clean OOP design patterns engineered by Zahid Uddin.

// Live Production Cache & DB Profiler Benchmark
> SYSTEM HEALTH: OPTIMAL (PHP 8.3.10-FPM + NGINX + Redis 7.2)
> DB ENGINE:     MySQL 8.0 with InnoDB Buffer Pool Tuning (4GB allocated)
> OPCACHE HIT:   99.82% (Memory Consumption: 48MB / 128MB)
> OBJECT CACHE:  99.41% (Redis in-memory hits across 42,000 keys)
> AVG DB QUERY:  0.0004s (0 slow queries recorded by Query Monitor)
> TTFB:          64ms via Cloudflare Edge Cache (Enterprise Tier)
64ms
Time to First Byte
99.4%
Redis Cache Hit Rate
0.0004s
Avg Query Duration
<?php
declare(strict_types=1);

namespace Zuddin\Core\Cache;

final class OptimizedQueryManager
{
    public function __construct(
        private readonly \Redis $redis,
        private readonly int $ttlSeconds = 3600
    ) {}

    public function remember(string $key, callable $fallback): mixed
    {
        $cached = $this->redis->get($key);
        if ($cached !== false) {
            return igbinary_unserialize($cached);
        }

        $data = $fallback();
        $this->redis->setex($key, $this->ttlSeconds, igbinary_serialize($data));
        return $data;
    }
}
// Custom High-Performance WP REST API Controller
add_action('rest_api_init', static function () {
    register_rest_route('zuddin/v1', '/inventory', [
        'methods'  => \WP_REST_Server::READABLE,
        'callback' => [InventoryController::class, 'getPayload'],
        'permission_callback' => [SecurityValidator::class, 'verifyHMAC'],
        'args'     => [
            'store_id' => ['required' => true, 'sanitize_callback' => 'absint'],
        ],
    ]);
});
// Google PageSpeed Insights & Lighthouse Metrics
> AUDIT TARGET:  Enterprise Production Build
> PERFORMANCE:   100 / 100 (Green)
> ACCESSIBILITY: 100 / 100 (Green)
> BEST PRACTICES:100 / 100 (Green)
> SEO:           100 / 100 (Green)
> LCP:           0.65s (Largest Contentful Paint)
> INP:           22ms  (Interaction to Next Paint)
> CLS:           0.000 (Cumulative Layout Shift)

// 05_selected_work

Products, platforms, and client sites.

A curated catalog of production platforms, custom WordPress themes, e-commerce architectures, and backend solutions shipped across US, EU, and global markets.

</> gulfcoastoutfitters.com

Gulf Coast Outfitters

Architected custom WooCommerce checkout optimizations, bulk inventory synchronization, and responsive styling tailored for heavy mobile traffic and high volume sales.

WooCommerce PHP OOP Custom Cart
</> caflatfee.com

CA Flat Fee

Engineered a high-converting real estate WordPress platform with custom ACF post structures, dynamic property filters, and CRM lead capture automation.

Real Estate WP ACF Pro CRM Integration
</> thebudgrower.com

The Bud Grower

Custom WooCommerce platform with bundle configuration logic, tailored payment gateway bridges, asset optimization, and streamlined customer purchasing pathways.

WooCommerce Product Bundles Stripe Gateway
</> naturallynwa.com

Naturally NWA

Designed a headless WordPress content delivery pipeline with edge caching, custom REST endpoints, and decoupled frontend integration for sub-second page rendering.

Headless CMS REST API Edge Caching
</> ucsdcommunityhealth.org

UCSD Community Health

Engineered an institutional healthcare information platform focused on strict accessibility (WCAG 2.1 AA), structured publication workflows, and robust uptime.

Healthcare CMS Accessibility Publishing Engine
</> nub.ac.bd

University Admissions Portal

Built a high-concurrency student admission portal using Laravel + Vue.js handling thousands of real-time applications, payment verification, and automated registration.

Laravel Vue.js High Concurrency
</> gcomfort.com

G Comfort

Developed custom theme templates, flexible service modules, and lightweight frontend interactivity with fast page loading times.

Custom Theme Modular Blocks
</> neuvio.com

Neuvio

Constructed an enterprise brand platform with external API bridges, custom contact webhooks, and pixel-precise design translation.

API Integration Webhooks
</> littlerockprinting.com

Little Rock Printing

Delivered an expansive commercial printing e-commerce platform with dynamic quote calculators, asset rendering optimization, and fast navigation.

WooCommerce Custom Calculator
</> raydoor.com

Raydoor

Optimized architectural product visualizer, custom inquiry plugin logic, and eliminated layout shift for better mobile UX.

Custom Plugin CWV Optimization
</> growth99.com

Growth99

High-speed SaaS marketing platform featuring custom lead distribution algorithms, edge caching rules, and seamless tracking integrations.

SaaS Platform Lead Pipeline
</> book-a-bubble.de

Book a Bubble (Germany & Switzerland)

Multi-region hospitality booking platform with localized currency switching, calendar scheduling integration, and automated guest confirmations.

Multi-Region Booking Engine

// 06_career

Professional journey.

8+ years of engineering leadership, production delivery, and backend craftsmanship across industry agencies and institutions.

March 2024 — Present

Senior Software Engineer

Mediusware Ltd
  • Lead backend-focused WordPress architecture for enterprise client builds, custom themes, and bespoke plugins.
  • Implement high-performance caching strategies using Redis Object Cache, OPcache, and Cloudflare Edge Rules.
  • Design scalable dynamic content systems with Gutenberg and ACF Pro for high-volume publishing teams.
  • Conduct code reviews, mentor junior engineers, and uphold strict security and coding standards.
PHP 8.3 Gutenberg / ACF Pro Redis Cloudflare Git / CI-CD
April 2022 — March 2024

Software Engineer

BluBird Interactive Ltd
  • Engineered custom WordPress themes and plugins with clean object-oriented PHP and MySQL optimization.
  • Integrated complex external APIs connecting client sites with third-party CRMs and payment processors.
  • Collaborated closely with US and European clients in Agile/Scrum sprints via Jira and Bitbucket.
Custom Plugins REST APIs WooCommerce MySQL
March 2020 — February 2022

Backend Developer (PHP / WordPress)

Dynamicflow IT
  • Developed custom plugins and optimized site performance for client e-commerce platforms.
  • Improved Core Web Vitals and technical SEO through database indexing and template-level refactoring.
  • Managed multiple concurrent client releases on tight delivery timelines.
PHP Core Web Vitals Performance
February 2018 — March 2020

Backend Developer

Northern University
  • Built university admission portals using Laravel + Vue.js handling high concurrent applicant volumes.
  • Maintained and optimized multiple institutional web properties, improving uptime and operational stability.
  • Configured LMS capabilities and integrated student record backend modules.
Laravel Vue.js MySQL LMS

// education

2016 — 2019

B.Sc. in Computer Science

Northern University Bangladesh

2011 — 2015

Diploma in Computer Engineering

Ahsanullah Institute of Technical & Vocational Education (AITVET)

// 07_skills_matrix

Technical arsenal.

Comprehensive mastery of backend architectures, CMS platforms, caching infrastructure, and modern deployment toolchains.

Backend & Languages

PHP 8.x (OOP) MySQL / MariaDB Laravel REST APIs JavaScript (ES6+) Node.js React.js

WordPress & CMS

Custom Themes Custom Plugins Gutenberg Blocks ACF Pro WooCommerce Headless WP WP-CLI

Caching & Infrastructure

Redis Object Cache OPcache Cloudflare CDN BunnyCDN NGINX / Apache PHP-FPM Docker

Tools & Workflow

Git / GitHub / Bitbucket Query Monitor Lighthouse / CWV Figma to WordPress Jira & Confluence Agile / Scrum

// 08_testimonials

What teams and clients say.

Feedback from product owners, tech leads, and long-term agency collaborators.

“Zahid’s understanding of WordPress backend architecture is phenomenal. He took our complex custom post and ACF requirements and turned them into clean, super-fast Gutenberg blocks without adding any plugin bloat.”

AK
Agency Technical Director
Collaborator on Multiple WP Builds

“Exceptional dedication and clean PHP code. Zahid optimized our WooCommerce checkout flow and caching layers, cutting our server response times in half during peak seasonal sale traffic.”

MR
E-Commerce Brand Manager
US Retail Client

“Always reliable, communicative, and punctual with sprint deliverables. Zahid is a true problem solver who takes ownership of complex backend problems and delivers bulletproof solutions.”

SH
Senior Project Manager
Mediusware Ltd

Let's build something scalable.

Open to senior backend engineering roles, custom WordPress consulting, and long-term contracts for clients across North America, Europe, and Asia-Pacific.

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