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
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
PHPFilament Plugin

PDF Template Builder

kukux/pdf-template-builder

A drag-and-drop PDF template builder plugin for Filament Admin. Upload PDF backgrounds, bind Eloquent model fields, and position them visually on a canvas. Supports multiple rendering engines (HTML, Dompdf, FPDI) and Filament v3–v5 with automatic version detection.

composer require kukux/pdf-template-builder
laravelfilamentpdftemplatebuilderdrag-drop
TypeScriptNext.js 16

Admin Kit

@cortejojicoy/admin-kit

A Next.js 16 admin panel kit with pluggable auth (JWT, OAuth, or custom), customizable sidebar, modules, and components. Works with both App Router and Pages Router, and ships separate client, server, and middleware entry points.

npm install @cortejojicoy/admin-kit
nextjsadminadmin-paneldashboardjwtoauthapp-routerpages-router