Open to Freelance & Contract Work

Product engineering from Full Stack to Agentic Systems.

I am a Senior Full Stack Developer with 8+ years of experience. I specialize in scaling e-commerce checkouts, custom payment integrations, robust Laravel backends, and modern AI-assisted / Agentic architectures.

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Professional Experience

138K+

Plugin Downloads

19+

Projects Shipped

31+

GitHub Repos

meetsayan-workspace

import { useState } from 'react';
import type { CheckoutResponse } from './types';
export function useUPIGateway(orderId: number) {
const [loading, setLoading] = useState(false);
const triggerPayment = async () => {
setLoading(true);
const res = await fetch('/wp-json/woo-upi/v1/pay/' + orderId, {
method: 'POST'
});
const data: CheckoutResponse = await res.json();
if (data.redirect_url) {
window.location.href = data.redirect_url;
}
setLoading(false);
};
return { triggerPayment, loading };
}
$ tsc gateway.ts --noEmit
> Compilation successful. Zero types error.

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Services

Full-stack competencies.

I deliver performance-first solutions tailored to modern infrastructure and developer experience guidelines.

01 — FRONTEND

Frontend Development

Pixel-perfect, accessible, and fast interfaces. Built using modern frameworks like Astro, Next.js, and React. Focus on responsive, device-independent layouts and animations.

Next.jsReactAstroTypeScriptTailwind CSS

lighthouse-performance-auditScore: 100%

FCP

0.2s

LCP

0.5s

CLS

0.00

Astro Core Vitals load speedPerfect Score

02 — BACKEND

Backend Architecture

Designing scalable REST/GraphQL APIs, database queries, and modular services. Building robust systems using Laravel, Node.js, and relational databases.

PHPLaravelNode.jsPostgreSQLMySQL

GEThttps://api.www.sayandatta.co.in/v1/health

{

"status": "operational",

"latency_ms": 9,

"database": "connected",

"cache_driver": "redis",

"jobs_queue": "active"

}

03 — WORDPRESS

WordPress Engineering

Architecting custom plugins, Gutenberg blocks, headless CMS configurations, and WooCommerce extensions. Active contributor to WordPress core since 2018.

WordPressGutenberg BlocksWooCommerceWP-CLIComposer

WP Last Modified Info

Official Plugin Directory

★ ★ ★ ★ ★

Active Installs

20,000+

Total Downloads

1,000,000+

View all services & client workflows →

Open Source

Project releases.

All projects & packages →

Full-Stack

Freelance Product

Shuvam Raha Music

Production Live · Premium Build

A high-performance music portfolio and guitar-academy website for a working musician. Built on Next.js 16 with the App Router, React 19 server components, Tailwind v4 design tokens, and a custom glassmorphic layout system.

Next.js 16React 19TypeScriptTailwind CSS v4Vercel

WordPress

Open-Source Contribution

Advanced Cron Scheduler for WordPress

5.0★ · Action Scheduler Bridge

Bridges WordPress's built-in WP-Cron system to the Action Scheduler library. Solves the well-known reliability problems of WP-Cron (missed events on low-traffic sites, fatal-error blocking) without forcing plugin authors to rewrite their cron registrations.

PHPAction SchedulerWordPress CronWP-CLI

Link →

Full-Stack

Acquired

Personal Product

UPI QR Code Payment Gateway for WooCommerce

A direct peer-to-peer UPI checkout extension for WooCommerce merchants, bypassing standard processing commissions by encoding invoice amounts into dynamic UPI QR codes and validating transactions via banking APIs.

PHPWooCommerceUPI API+1

Source Code View Site

Full-Stack

Acquired

Personal Product

Razorpay Payment Links for WooCommerce

An automation tool that generates and emails secure Razorpay payment links the moment a WooCommerce invoice is created — removing the manual back-and-forth of asking customers to pay.

PHPWooCommerceRazorpay API+1

WordPress

Team

Company Product (Expresstech)

Gutena — FSE Theme & Block Ecosystem

The complete Gutena product line: an FSE (Full Site Editing) theme, 12 native Gutenberg block plugins, and the licensing/activation system that powers the entire paid ecosystem. I built every plugin in the ecosystem except Gutena Forms, and designed the licensing layer that lets the theme and plugins verify and validate paid customers at runtime.

ReactGutenberg APIPHP+3

Current Role

TeamUpdraft

Senior Developer · UK (Remote)

Developing and maintaining UpdraftCentral, managing remote site backups, core upgrades, and security protocols across hundreds of thousands of active nodes.

Open Source

WordPress Core

Contributor since 2018

Active open-source contributor providing code patches, optimization fixes, and layout configurations directly to the core CMS engine.

Education

M.Sc. Information Security

IGNOU · First Class

Professional training in secure application architectures, data storage models, and encryption patterns, enforcing safety directly in product code.

Work together

Let's build something remarkable.

Need a performant custom WordPress plugin, an optimized React/Next/Astro interface, or scalable API integrations? Let's discuss your requirements.

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