Yohan Lukin Callanta — Software Engineer

01 Selected work

Systems built around
real workflows.

Full-stack and cross-platform software spanning rice farm operations, government assets, climate monitoring, HR, payroll, and mobile marketplaces.

01 / Flagship system Full-stack · 2026

01 / 02 Authentication

Agricultural operations platform

ANIBUKID

A centralized platform that turns fragmented rice-farming activities into one connected operational workflow—from GPS field registration to harvest and sale.

I built the Laravel and Vue system across crop lifecycle tracking, labor and inventory, post-harvest processing, financial reporting, and a buyer-facing marketplace. Weather services add field-specific forecasts, Growing Degree Day calculations, and agronomic threshold alerts.

35domain models

03weather providers

10dforecast horizon

Laravel 12
Vue 3
PostgreSQL
Docker
Leaflet

02 / Government systems DepEd Regional Office 10

01 / 04 ROX Inventory

Property, DCP, and HR workflows

ROX Systems

Maintained and extended interconnected government platforms while working inside established Laravel, Sximo, and MySQL codebases.

The work covered role-scoped property records, Government Accounting Manual classifications, reporting and exports, DCP inventory synchronization, employee records, PDS generation, and mobile-facing API routes.

01 ROX Inventory 2.0 02 DepEd DCP 03 DepEd HRIS

Laravel 8
Sximo
MySQL
REST APIs

03 / Cross-platform Climate-smart agriculture

01 / 09 Platform overview

Monitoring and alert platform

KLEMA

Farm boundaries, live weather conditions, and operational alerts brought together across mobile and web interfaces.

KLEMA uses Leaflet and GeoJSON for field mapping, a Laravel/PostgreSQL backend for farm data, and scheduled commands for irrigation, harvest, and maintenance alert scenarios.

Vue 3
Capacitor 6
Laravel 12
PostgreSQL

04 / Mobile Flutter

01 / 06 Home dashboard

Smart locker reservation

Lucker

Discover, reserve, access, and claim lockers with Firebase-backed inventory, notifications, QR flows, and validated 3–24 hour booking windows.

Flutter
Firebase Auth
Firestore
QR

05 / Backend Marketplace

Role-based marketplace API

AgriTrade

NestJS backend APIs for farmers, consumers, and administrators with JWT authentication, RBAC guards, carts, orders, payouts, and promo-code flows.

NestJS 11
PostgreSQL
JWT / RBAC
Expo

+ System archive

More builds across web, mobile, and desktop—with the interfaces to prove them.

01 Web platforms 02 builds

Laravel 12 / MySQL / Blade

KONEK

CMU talent network and freelance marketplace.

Google Sites / DepEd

NMRAA 2026

Live medal tallies and event information for the regional Palaro meet. Visit site ↗

02 Mobile applications 02 builds

Flutter / Mobile

BusTrak

Mobile transportation and commuter workflows.

Flutter / Personal project

Anime App

Search, rankings, seasonal discovery, and media browsing.

03 Desktop & kiosk systems 04 builds

Flutter / SQLite / PDF

EC Mabao HR & Payroll

Attendance, leave, payroll, deductions, and reporting.

VB.NET / MySQL

Iron Lifters

Gym membership, QR attendance, payments, and audit records.

Flutter / MySQL

GFast Kiosk

Product scanning, cart building, and kiosk order flows.

VB.NET / MySQL

Library System

Authors, books, borrowers, loans, and return tracking.

02 Experience

Built inside
real constraints.

Working across new builds and legacy systems taught me to understand the workflow first, respect existing data, and improve software without losing the people who depend on it.

Leveric

Software Developer · Jul 2026 – Present

Software Developer

Software developer at Leveric.

Blank Myth · AstralStream Labs

Internship · Jul 2026 – Present Remote · New York

Backend Developer Intern

Auditable AI production pipelines and eCommerce automation

Building Idea-to-Video, a modular production pipeline that turns an original concept into a certified storyboard, validated prompt package, and production-ready image assets. The system carries provenance through immutable, hash-bound artifacts and fails closed when identity selection, certification, or visual QA is incomplete.

Five-phase, fifteen-stage workflow with typed contracts and independently testable modules
Browser-based image generation with semantic visual QA and bounded retry controls
Evidence-backed acceptance gates for storyboards, prompts, assets, and final handoff
Python and TypeScript automation developed through tests, code review, and AI-assisted workflows

Department of Education

Regional Office 10 · Internship Cagayan de Oro, Philippines

Full-Stack Developer & ServiceDesk Engineer

Government systems and user support

Maintained and extended inventory, DCP, and HRIS platforms while supporting users and working through legacy schemas, deployment constraints, reporting requirements, and API integrations.

Laravel and Sximo feature maintenance
Inventory and HR reporting workflows
Mobile and external API routes
Technical support for government users

CMU Quality Assurance Office

Creative and documentation support Musuan, Bukidnon

Multimedia Contributor

Accreditation communication

Produced video and presentation materials for ISO accreditation, translating formal documentation into clear visual communication for review and presentation.

03 Capabilities

Across the
whole system.

A practical stack shaped by shipping complete workflows—not collecting technology logos.

Backend systems

Role-based applications, domain workflows, scheduled automation, reports, and APIs.

PHP / Laravel 8 & 12
Node.js / NestJS 11
REST APIs / JWT / RBAC
PDF and report generation

Web interfaces

Operational dashboards and responsive interfaces built around dense, real-world data.

Vue 3 / JavaScript
Blade / Tailwind CSS
Charts and analytics
Leaflet / GeoJSON

Mobile & desktop

Cross-platform applications for field work, reservations, HR, scanning, and administration.

Flutter / Dart
React Native / Expo
Capacitor
.NET / WinForms

Data & delivery

Relational and cloud data stores with deployment tooling for maintainable delivery.

PostgreSQL / MySQL / SQLite
Firebase / Firestore
Docker / Railway / Nginx
Linux / Git / GitHub

04 About

Based in Bukidnon, Philippines

I build software for the parts of work that are usually messy.

I’m a BS Information Technology graduate specializing in Software Development. My work tends to sit where software meets a complicated real process: crop stages, property classifications, employee records, payroll rules, inventory movement, or multi-role marketplaces.

I enjoy understanding those rules, shaping reliable data around them, and building an interface that people can actually use. I’m comfortable moving across backend, web, mobile, database, and deployment work when the system needs it.

Education