Full-stack systems / automation / applied AI

Messy operations in. Reliable systems out.

I’m Wrenz. I map the real rule first—who can do what, what can fail, and how we prove the result—then turn it into software, automation, or an applied-AI workflow.

See the systems Download résumé

Based in Bataan, PhilippinesBS Computer Science, Cum Laude

PRODUCTION LOOP01—03

01UnderstandRules before interface

02BuildFailure modes included

03VerifyRead back the result

Selected work

Built around actual operations.

Each project started with a real workflow, constraint, or failure mode. The interface came after the rules were understood.

01 / BUSINESS SYSTEM

Pig Feeds POS

A working point-of-sale and credit ledger for a Philippine sari-sari store, designed around how the owner actually separates sales value, cash received, and customer utang.

Transactional checkout updates sales and stock together.
Customer passbooks preserve charges, payments, and opening balances.
Dashboard separates benta from cash na pumasok.

Next.jsTypeScriptPrismaSQLiteVitest

Private client project · case study available

Daily order book

TodayNew order

Hog Starter₱1,92050kg sack · 18 in stock

Grower Pellets₱1,76050kg sack · 12 in stock

Vitamin Premix₱2851kg pack · 31 in stock

Feed Scoop₱95Piece · 9 in stock

02 / PRODUCTION AUTOMATION

AGG Doors time-log system

A Python pipeline that turns free-form Google Chat attendance messages into validated weekly employee timesheets in Google Drive.

Distinguishes physical arrival, login, break, lunch, and logout.
Handles shared accounts, account migrations, missing events, and invalid chronology.
Backs up before writes and verifies results through API read-back.

PythonGoogle Chat APISheets APIDrive APIGitHub Actions

View public adaptation

GOOGLE CHAT · 7:23 AM

Computers
Login 7:23 -W

Lunch out 12:04
Back 12:47

parsevalidatemap

DEFGHIJK

ArrivalStartBreakInLunchInFinishTotal

7:227:23——12:0412:474:318:25

API read-back verified

03 / WINDOWS DESKTOP PRODUCT

KeyClick Automator

A Windows desktop app that turns keyboard and mouse automation into a visual sequence users can inspect, tune, save, and stop safely.

Records key presses, shortcuts, typed text, clicks, scrolling, and pointer drags.
Supports per-step timing, repeats, reordering, temporary disabling, and reusable profiles.
Ships as portable and installer builds with global controls and an emergency-stop fail-safe.

PythonPySide6Qt QuickPyAutoGUIPyInstaller

Download for Windows Source

KeyClick Automator—　□　×

ACTIVE PROFILEMorning workflow

SEQUENCE3 actions

Press shortcutCTRL + SHIFT + S

0.2s

Type textDaily report complete

0.4s

Left clickSaved pointer position

0.8s

Ready · 1 cycle

+Med42 Clinical SuiteAI Enabled

New Diagnosis

Patient NamePatient ID

Describe patient symptoms...

Save DraftSubmit for Review

04 / FULL-STACK + AI

Med42 Clinical Suite

A clinical workflow with versioned diagnosis and medication APIs, AI response streaming, review states, JWT sessions, rate limiting, and audit logs.

Django RESTPostgreSQLRedisReact

Live application Source

KatiwalaHome services, handled.

Book a service

Home cleaning ›

Electrical repair ›

Plumbing ›

Provider verification

Government ID

Face capture

3 Review & submit

Pending verification

05 / MARKETPLACE

Katiwala

A Filipino home-services marketplace with separate customer and provider journeys, booking flows, identity capture, editable OCR data, and pending verification states.

ExpoReact NativeTypeScriptPrisma

Private product · active development

06 / PRODUCTION EXPERIENCE

Everyday Rockstar™

A conversion-focused coaching and community platform with a cinematic editorial direction, custom motion, responsive behavior, and production-grade delivery.

Built a pinned three-scene hero, scroll reveals, parallax, marquees, and smooth scrolling.
Kept mobile layouts in-flow and preserved a complete reduced-motion experience.
Shipped optimized WebP assets, security headers, legal pages, redirects, and deployment QA.

ViteJavaScriptGSAPLenisApache

Visit live experience

everyday-rockstars.comLIVE

Everyday Rockstar production website hero

Production snapshotOpen live site

COMPUTER VISION

LiPAD

CRNN and GAN research for deblurring and recognizing Philippine license plates. Best Computer Science Thesis Paper and Presenter at IRCITE 2026.

TensorFlow · PyTorch · CRNN · GAN

FULL-STACK FINTECH

PesoWise

A personal spending tracker built with Next.js, TypeScript, Prisma, authentication, and protected user data flows.

Visit live app

What I do

One developer, four useful angles.

Full-stack systems

React and Next.js interfaces backed by Django, REST APIs, PostgreSQL, Redis, Prisma, and SQLite.

Business automation

Python workflows that turn messy operational data into validated reports, sheets, files, and scheduled jobs.

WordPress engineering

Gutenberg, ACF, PHP, REST API, technical SEO, content recovery, redirects, and production-safe changes.

Applied AI

Computer vision, streamed AI services, model evaluation, safety checks, and usable interfaces around AI outputs.

FrontendReact · Next.js · React Native · TypeScript · Tailwind CSS

BackendPython · Django REST Framework · PostgreSQL · Redis · Prisma

PlatformsWordPress · Google Workspace APIs · Vercel · GitHub Actions

QualityRegression testing · API read-back · mobile QA · rollback planning

Experience

Production work, not coursework dressed up.

I work close to the operational details: existing data, business rules, live users, rollback paths, and the parts that cannot be guessed.

2026 — Present

Freelance Web Developer & Automation Engineer

AGG Doors · Client project

Production WordPress engineering, content recovery, technical SEO, Python automation, Google Workspace APIs, document processing, and verified live changes.

2026 — Present

Freelance Full-Stack Web Developer

Self-employed

Business applications and responsive client sites using React, Next.js, TypeScript, Django, Prisma, and modern deployment workflows.

2026

Full-Stack Developer / AI Engineer Intern

eBiZolution · Healthcare portal

Versioned clinical APIs, approval workflows, SSE-based AI output, PostgreSQL, Redis, JWT sessions, rate limiting, revocation, and audit logging.

About

I care about the handoff between “it runs” and “it’s reliable.”

I’m a Computer Science graduate from Angeles University Foundation, majoring in Data Science. I graduated Cum Laude and now work across software development, automation, WordPress, and applied AI.

My strongest work usually starts where the requirements get messy: old spreadsheets, inconsistent user input, account migrations, production content, or an AI output that still needs safety and review.

GitHub LinkedIn

RECOGNITION

Cum LaudeBS Computer Science, Data Science

Best Thesis Paper & PresenterIRCITE 2026 · LiPAD

1st PlaceJPCS Hackathon 2025

Microsoft CertifiedAzure Fundamentals

Let’s build something useful

Have a workflow that has outgrown its spreadsheet?

I’m open to full-time roles, freelance projects, and conversations about business systems, automation, WordPress, or applied AI.

wrenzivan2004@gmail.com