Full Stack Developer — Web & Mobile

I build and maintain real production web and mobile apps.

I work primarily with PHP (CodeIgniter 4), Flutter, MySQL, and REST APIs — deployed and managed on Linux VPS servers. Modern AI coding assistants are part of my workflow, but the architecture, backend logic, and deployment are mine to design, debug, and maintain.

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xenora-esports.in
Xenora Esports
PHPCodeIgniter 4FlutterMySQLLinux / VPS

About

Full Stack Developer building real-world web and mobile products.

I focus on building and maintaining real-world web and mobile applications — primarily with PHP (CodeIgniter 4), Flutter, MySQL, and REST APIs, deployed and managed on Linux VPS servers. I build, modify, debug, and maintain production projects rather than simply generating code.

01

End-to-end ownership

From architecture and backend logic to database design, deployment, and debugging — I own the full lifecycle of a project, not just the code.

02

Primary stack

PHP with CodeIgniter 4, Flutter for mobile, and MySQL/MariaDB — the stack I use to build and maintain real production applications.

03

Linux & deployment

Comfortable managing Ubuntu VPS servers directly — Apache/Nginx configuration, aaPanel, PM2, SSL, and DNS through Cloudflare.

04

AI-assisted workflow

Uses a modern AI-assisted development workflow while independently designing architecture, debugging complex issues, implementing backend logic, and managing production deployments.

Skills

The stack I reach for

Tools I use often enough that I don't need to look up the docs.

Frontend

HTML5, CSS3, JavaScript, TypeScript, Tailwind CSS, Flutter, Responsive Design

Backend

PHP, CodeIgniter 4, REST APIs, Authentication, Payment Gateway Integration, Wallet & Ledger Design, Queues & Cron Jobs

Email & Messaging

Postfix Mail Server, SPF / DKIM / DMARC, Brevo SMTP, Push Notifications (FCM), Telegram Bot API

Database

MySQL, MariaDB

Server & DevOps

Ubuntu Linux, VPS Management, Apache, Nginx, aaPanel, Cloudflare, DNS Management, SSL Configuration, Git, GitHub, PM2, Deployment

Other

API Integration, Bug Fixing, Performance Optimization, Application Maintenance, Google Analytics

Services

How I can help

Full stack web and mobile development, backend and API work, and the server administration that keeps it all running.

01Full Stack Web Development
02Flutter App Development
03CodeIgniter 4 Development
04REST API Development
05Wallet & Payment Flows
06PHP Bug Fixing
07Website Maintenance
08VPS Server Setup
09Ubuntu Server Management
10Apache & Nginx Configuration
11Email Server & Deliverability Setup
12Application Deployment
13Production Migration & Rollback Planning
14Performance Optimization

Projects

Things I've built

A mix of shipped work and projects still in motion.

xenora-esports.in
Xenora Esports
01

Xenora Esports

Completed

A live esports tournament platform with 20,000+ registered accounts, now shipped as three Android apps on one CodeIgniter 4 backend: Lite on Google Play for free tournaments, Pro with a wallet, paid tournaments and withdrawals, and Studio for group managers who host their own tournaments. Everything is run from a single admin panel.

  • Three Flutter apps on one API, switched per request with an edition header, so Lite stays Play Store compliant while Pro and Studio ship as website APKs.
  • Wallet with separate deposit, winning and bonus balances, backed by a double-entry ledger and a reconciliation check that proves every wallet matches the books.
  • Studio for group managers: own tournaments, result entry with deadlines, strikes and earnings.
  • Own mail server (Postfix, SPF, DKIM, DMARC) plus a Brevo relay, one-click unsubscribe and a slow daily drip for announcement emails.
  • Telegram bot that posts result cards automatically, push notifications and an admin cron manager.
  • Admin monitoring: daily active users per app version, SMS/OTP usage, audit log and money checks.
  • Live production migration of code and database with backups and a rollback plan.
  • Flutter/
  • CodeIgniter 4/
  • PHP 8/
  • MariaDB/
  • REST API/
  • Postfix / Brevo/
  • Telegram Bot API/
  • Firebase FCM/
  • Linux VPS
Visit WebsitePlay Store

Additional administration interface screenshots available on request.

payment.xenora-esports.in
FreshCart Grocery Platform
02

FreshCart Grocery Platform

In progress

A modern grocery ordering platform inspired by Blinkit-style UX, currently under active development. Built on CodeIgniter 4 with a scalable backend architecture covering ordering, inventory, and admin management.

  • CodeIgniter 4/
  • PHP/
  • MySQL/
  • REST API
Visit Website

Private demo available on request.

Contact

Have a project in mind? Let's talk.

I'm open to freelance work and full-time roles. The fastest way to reach me is email.

kraj6672407@gmail.com