hello

John Cortejo

Software Engineer

I build and ship web applications end-to-end — from architecture and backend APIs to frontend interfaces and deployment pipelines. My work spans modernizing legacy systems, integrating DevOps practices, and delivering tailored software for startups, enterprises, and small businesses.

Tech Stack

JavaScript
TypeScript
Nuxt.js
Next.js
React
Redux
Node.js
Angular
Laravel
PHP
CodeIgniter
Ansible
Terraform
Jenkins
Docker
PostgreSQL
MySQL

Published Packages

PHPFilament Plugin

Digital Signature

kukux/digital-signature

A Laravel Filament plugin for capturing signatures, issuing X.509 certificates, and embedding cryptographically signed stamps into PDF documents. Includes forgery detection, screenshot rejection, optional CRL revocation, and RFC 3161 timestamps.

composer require kukux/digital-signature

laravelfilamentdigital-signaturepdfpkipades

PHPFilament Plugin

Modern File Upload

kukux/modern-file-upload

A React-powered file upload and viewer plugin for Filament (v3–v5). Features drag-and-drop with progress tracking, PDF thumbnail rendering, image and file viewer with zoom and navigation, gallery and list view modes, and full dark mode support.

composer require kukux/modern-file-upload

laravelfilamentfile-uploaddrag-and-droppdf-preview