ABOUT
I'm Renz Rendel De Arroz. I build full-stack web and mobile applications that solve real problems.
I focus on systems that are practical, reliable, and easy to use — and I learn best by building.
Most of my learning comes from building — I enjoy understanding how systems work behind the scenes, from interfaces and databases to application logic. My goal is to create products that are useful, scalable, and grounded in real problems.
EXPERIENCES
2026 Software Engineer Intern
Prometheus EnterprisesImproved software quality by thoroughly testing features, identifying issues, and validating fixes before release. Contributed to a client project by analyzing the existing codebase, implementing backend tasks, and establishing automated testing.
- ClickUp
- Next.js
- PostgreSQL
- Vercel
- React
- Tailwind CSS
- Playwright
2025 - 2026 Technical Developer
Simcoe EmploymentDeveloped, maintained, and audited 6 WordPress websites, managed DNS record transfers between domains, and configured email DNS settings including MX, SPF, and related records.
- WordPress
- HTML
- JavaScript
- CSS
PROJECTS
Cogssy
A COGS calculator for makers and small businesses. Define ingredients with unit conversion, add overheads, compose products, and get a target selling price from your desired margin.
Next.jsReactTypeScriptTailwind CSS
Laundry Management System
A web application that helps small laundry businesses manage orders, track customers, and streamline daily operations.
HTMLCSSJavaScriptPHPMySQL
PondStat
A monitoring tool built to help UPV Fisheries students record pond conditions, track growth, monitor water quality, and analyze pond data.
FlutterDartFirebase
Pathfinding Visualizer
A web application for visualizing and understanding various pathfinding algorithms in real-time, compiled with WebAssembly.
WASMCHTMLCSSJavaScript