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HelalStart a project

I build, secure and scale online stores and web platforms.

A senior e-commerce and full-stack engineer, working with businesses in the US, UK, Canada and Australia.

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Based in Bangladesh · works across US/UK/CA/AU time zones
Available for 2 new projects · Dhaka time · UTC+6

01 / Overview

Engineering for businesses that sell online

I'm Helal. I build and run the technical side of online businesses: the store, the platform behind it, the automation around it and the infrastructure under it.

Most of my clients are established stores and service businesses with a small team and no in-house engineer. They come to me for a custom plugin or a checkout flow, a store that has to stay fast under ad traffic, a site that was hacked, or a custom platform to replace the plugins they've outgrown.

The range runs from WordPress and WooCommerce to full-stack TypeScript platforms, React Native apps, AI agents and the servers, DNS and backups they run on. I keep the growth side in view too, so what I build can be measured.

More about me and how I build

US · UK · CA · AU

Markets I work with

WordPress → custom TypeScript

The range, one engineer

Spec → build → line-by-line review

How every project runs

02 / Services

What I build and run

  • Web development

    Custom WordPress and WooCommerce plugins, themes and integrations, and headless React or Next.js front ends

  • Custom platforms & apps

    Full-stack TypeScript platforms, multi-tenant SaaS, APIs and integrations, and React Native mobile apps

  • AI automation & agents

    AI agents with a human hand-off, MCP servers, workflow automation and browser extensions

  • Performance engineering

    Core Web Vitals, front-end and server-side optimization, caching, and scaling under ad traffic

  • Security, infrastructure & site care

    VPS and DNS, Cloudflare, hardening, fraud and bot defense, tested backups, monitoring and monthly care

  • Growth engineering

    Analytics and server-side tracking, attribution, conversion improvements, lifecycle and CRM systems, ad performance analysis

All services

03 / Work

Selected work

US subscription supplement store

Live

Stopping a card-testing attack

Problem
Bots were testing stolen cards at checkout, creating failed orders and payment risk.
What I built
Firewall rules against bot traffic, forced card authentication, API user-enumeration block, fake-order filtering.
Outcome
Live in production; card-testing orders stopped reaching the gateway.
Stack
  • Cloudflare WAF
  • WooCommerce
  • PHP

Israeli jewelry store (Hebrew, right-to-left)

Live

Performance overhaul

Problem
Slow pages on mobile, heavy tracking scripts and a late-loading hero.
What I built
LCP and preload fixes, font and script cleanup, duplicate pixel removal, server-side profiling.
Outcome
Live in production; the hero image loads first and each tracking pixel fires once.
Stack
  • WordPress
  • WooCommerce
  • Cloudflare

Independent project

Live

Multi-store commerce platform

Problem
Several storefronts had to share one stock pool and one order process.
What I built
Custom TypeScript platform with queues, order verification and courier integration.
Outcome
Live in production; several storefronts sell from one stock pool through one order process.
Stack
  • Node.js
  • TypeScript
  • Fastify
  • PostgreSQL
  • Redis
  • BullMQ
  • Next.js
  • Hetzner
  • Cloudflare

Independent project

Live

AI customer-support agent

Problem
Customer messages needed fast replies without losing control of orders.
What I built
Agent that answers customers, places orders as pending for staff review and hands off to a human with an issue ticket.
Outcome
Live in production; the agent answers customers, and every order it places waits for staff to confirm.
Stack
  • Claude
  • MCP
  • Chrome extension

US subscription supplement store

Building

QR attribution plugin

Problem
Street marketing had no way to prove which flyers produced orders.
What I built
QR codes with post-scan tracking and first/last-touch order attribution, built to grow with more features.
Outcome
In build for a live store; each order will carry the first and last QR scan that led to it.
Stack
  • WordPress
  • WooCommerce
  • PHP
  • React

US subscription supplement store

Building

Mobile shopping app

Problem
Repeat customers needed a faster way to reorder.
What I built
iOS and Android app with native cart and guest checkout.
Outcome
In build; one codebase for iOS and Android, running on the store's existing WooCommerce data.
Stack
  • React Native
  • WooCommerce

All work

04 / Capabilities

Capabilities and stack

E-commerce development
Custom WordPress and WooCommerce plugins and themes · Checkout and payment flows · Subscriptions · Headless and React/Next.js front ends
Custom platforms & apps
Full-stack TypeScript platforms · Multi-store and multi-tenant SaaS · APIs and integrations · React Native mobile apps
AI & automation
AI customer support agents with human hand-off · MCP servers for business systems · Workflow automation · Browser extensions
Performance
Core Web Vitals · Front-end and server-side optimization · Caching strategy · Scaling under ad traffic
Infrastructure & security
VPS and DNS management · CDN and firewall rules · Fraud and bot defense · Backups with restore tests · Monitoring · Hacked-site recovery
E-commerce operations
Order verification flows · Courier and fulfillment integrations · Multi-storefront stock
Tracking & analytics
Analytics and tag management · Server-side tracking · Order attribution
Conversion & lifecycle
Funnel and checkout analysis · Landing page improvements · Lifecycle and CRM systems · Holdout testing
Ad performance
Ad account structure · ROAS diagnosis · Budget allocation · Competitor research
Cloud & infrastructure
Cloudflare (DNS, WAF, CDN, Pages, Workers, R2), AWS, Hetzner, VPS server administration, aaPanel, Caddy, Managed WordPress hosting
Backup & recovery
Backblaze B2, Automated off-site backups, Scheduled restore tests
Monitoring & reliability
Self-built uptime monitoring, GlitchTip error tracking, Alerting by Telegram, SMS and email
Data & backend
Node.js, TypeScript, Fastify, PostgreSQL, Prisma, Redis, BullMQ, Supabase, PHP
Front end & apps
React, Next.js, Vite, Tailwind CSS, React Native, Chrome extensions (WXT)
Commerce
WordPress, WooCommerce, WooCommerce Subscriptions
Analytics & tracking
Google Analytics 4, Google Tag Manager, Server-side tagging
Email & CRM
FluentCRM, Brevo
AI & automation
Claude Code, MCP servers, n8n, LLM agents

The full skills map, with the work behind each skill

05 / Process

How I work

Every build starts with a written spec. I build with AI coding tools, in small tested steps, and I review every line before it ships.

  1. Discovery

    Four short questions, then a 30-minute call. I review your site or brief first and come with questions and the risks I see.

  2. Spec

    A written spec and a one-page proposal: what gets built, what doesn't, the timeline and the price.

  3. Build

    Small, tested steps on a staging copy. I build with AI coding tools, and you get a short written update as each part lands.

  4. Review

    I review every line before it ships. You check the working result against the spec.

  5. Launch

    Deployed with a rollback plan, measured before and after, handed over with notes.

  6. Support

    Fixes after launch, then monthly care or ongoing work if you want it.

How I work, in detail

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