Selected engineering work

Software systems built and modernized across SaaS, healthcare, fintech, and enterprise operations.

These case studies focus on the problems, technical decisions, contribution boundaries, and implementation work behind selected projects. Some project names and interfaces have been generalized or reconstructed to protect client confidentiality.

Detailed Case Studies

Four projects, with the engineering context left visible.

Reconstructed desktop operations workspace showing a generalized organization-scoped work queue with fictional records and status labels.

2025–2026 · B2B SaaS / Operations Platform

Property Services Operations SaaS

Full-Stack Developer — Backend-Focused

Led the Laravel backend implementation that converted an inherited B2B operations platform from single-tenant to multi-tenant behavior, then strengthened workflow reliability, API contracts, real-time updates, file handling, and regression protection within a distributed team.

Laravel 12
PHP 8.3
MySQL
Redis
PHPUnit

Screenshots use demonstration data from a non-production environment.

View the Property Services Operations SaaS case study

January 2022 – May 2025 · Healthcare SaaS / Workflow Platform

Orthodontic Workflow SaaS

Full-Stack Developer

Led and implemented staged modernization from Laravel 7 to Laravel 11, PHP 7.4 to PHP 8.3, and React 16 to React 17 for an established multi-organization workflow platform, while contributing reusable interfaces, integration reliability, search and reporting, API work, and PHPUnit regression protection.

Laravel 7-11
PHP 7.4-8.3
React 16-17
MySQL
PHPUnit

Screenshots use anonymized demonstration data from a non-production environment.

View the Orthodontic Workflow SaaS case study

Reconstructed desktop workflow workspace showing a generalized fictional multi-organization queue with status labels.

Synthetic administrator interface showing a completed commission run with tracked progress, reviewable log output, report generation, and period completion.

2020–2021 · Legacy Affiliate Commission Platform

Legacy Affiliate Commission Platform Modernization

Senior Commission Developer — Commission Processing Modernization

Modernization and ongoing evolution of a long-lived affiliate commission platform supporting varied direct-selling workflows. My backend-focused work covered reusable processing workflows, relationship and reporting views, tracked operational execution, and payout-compatible support for client-specific implementation needs.

PHP
MySQL
jQuery
Bootstrap

This case study describes legacy work completed during prior employment around 2020–2021. Reconstructed interfaces use synthetic data only.

View the Legacy Affiliate Commission Platform Modernization case study

December 2017 – October 2018 · Enterprise Fleet Card and Fuel Expense Management Portal

Enterprise Fleet Card Portal

Lead Developer · Kinetique Systems Inc.

Established the ASP.NET Core 2.0 and Onion Architecture foundation for a production customer portal delivered to a major Philippine petroleum company, led major Fleet Card account-management workflows, and set up the testing foundation, within a small collaborative team.

ASP.NET Core 2.0
C#
SQL Server
Onion Architecture

Reconstructed demonstration based on archived application source. All records and values are synthetic; no production database, SAP system, Fleet provider, or customer data was used.

View the Enterprise Fleet Card Portal case study

Synthetic Fleet account dashboard using a charcoal and emerald editorial interface, with generalized account summary cards, recent activity, and a collapsed navigation rail.

Other Selected Work

Other selected work

Focused contributions across lending and fintech products.

May 2025 – June 2025

Loan Management Platform

Full-Stack Developer

Developed configurable document-template and holiday-management tools for administrative workflows, added multi-factor authentication and REST API support, and built Alpine.js and Tailwind CSS components for configuration-heavy administrative tasks.

Laravel · PHP · Alpine.js · Tailwind CSS · MySQL

September 2021 – February 2022

Fintech Investor Platform

Full-Stack Developer

Developed investor communication and notification features, integrated third-party identity-verification and financial-data services with validation, retry handling, and failure recovery, and contributed to automated testing and CI troubleshooting.

Laravel · PHP · React · MySQL · REST APIs

Additional Project Experience

Additional project experience

Radiology Workflow Platform

Refactored legacy scheduling logic and related automation, improved role-aware access and generalized filtering behavior, and added contextual assistance to clarify routine scheduling workflows.

PHP · JavaScript · jQuery · Vue · Bootstrap · MySQL

Real Estate Listing Platform

Built listing search and filtering functionality, integrated external listing data into application workflows, and automated lead notifications and follow-up processes.

PHP · WordPress · JavaScript · External APIs

Photo Management SaaS

Contributed to the Laravel backend foundation and selected administrative modules, including organization and location management, Docker-assisted development, and code-quality tooling.

PHP · Laravel · Alpine.js · Tailwind CSS · MySQL · Docker

Acumatica ERP Customizations

Contributed to Acumatica 2018 R1 customizations for payroll, real-estate, and property-management workflows.

C# · .NET Framework · Acumatica 2018 R1 · SQL Server

Ecommerce Configuration and Ordering Platform

Built backend ecommerce functionality supporting configurable-product selection, ordering, and payment-service integration with WordPress and WooCommerce.

WooCommerce · PHP · WordPress

Cooperative Banking and Membership System

Contributed to a desktop business system supporting membership, savings, loans, teller transactions, and accounting workflows.

VB.NET · Windows Forms · SQL Server

Point-of-Sale and Localized HRIS Systems

Contributed to point-of-sale application work and an HRIS extension tailored for Philippine organizations, supporting localized human-resource workflows and business requirements.

VB.NET · Windows Forms · SQL Server

Community and Member-Monitoring Systems

Helped build attendance, member-tracking, and community-organization workflows across related applications.

Laravel · ASP.NET MVC · Vue · jQuery · SQL