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Hi, I'm Kreezel. Senior Software Engineer & AI Automation Engineer

12+ years of software engineering experience, now expanding into AI-powered engineering, multi-agent systems, and AI-driven development orchestration. Combining software engineering expertise with Claude Code, Codex, Orca, and n8n to build scalable solutions and automate workflows.

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Kreezel Villanueva smiling, portrait

Selected work

Nine projects. Four of my own first, then five private ones from client and employer work.

Live you can open it Private client or personal work, no public link

Featured

Sites you can open, and the AI work I've been building lately.

  • LiveMy own site, since 2020

    YoungSaversPH

    My financial-advisor website, started on Blogger in 2020: services, product pages, blog and Calendly booking.

    • Astro
    • Vercel
    • Calendly
    • Playwright

    youngsaversph.com (opens in a new tab)

  • Private betaNew · 2026

    Video Knowledge Chatbot

    Ask a question, get YouTube videos with clickable timestamps that play the exact moment the answer is spoken.

    • Next.js 16
    • Tailwind 4
    • Supabase
    • OpenAI
    • YouTube Data API
    • Vercel

    Private beta, no public link yet. Happy to demo it.

  • Private · personalNew · 2026

    AI Automation Workflows

    n8n workflows: an AI assistant across Gmail, Calendar, Zoom, blog and Airtable.

    • n8n
    • OpenAI
    • Anthropic
    • Pinecone
    • Airtable
    • Google Workspace

    Personal workflows, no public link. Happy to walk you through them.

Private client work

Built for ShiftCare and Cybersoft. No public links, but happy to walk you through any of them.

  • Private · client workShiftCare · built by me

    Enterprise Account Portal

    A separate app for organisations that run many ShiftCare accounts.

    • Ruby on Rails
    • RSpec

    Client work, no public link.

  • Private · client workCybersoft

    AI-Powered Application Integration

    Integrated multiple applications with AI.

    • Rails
    • Python
    • GPT-4o
    • Gemini

    Client work, no public link.

  • Private · client workCybersoft

    API Integration and Web Scraping System

    API-integrated system with web scraping and data mining.

    • Rails
    • Selenium
    • Sidekiq

    Client work, no public link.

  • Private · client workCybersoft

    Task Management System

    Built and deployed a workflow tool to streamline team work.

    • Rails
    • JavaScript

    Experience

    Twelve years of engineering, plus a side quest in finance. Newest first.

    1. May 2025 – Sep 2026

      ShiftCare

      Software Engineer · Remote, full-time

      Private Australian SaaS company: care-management software used by 8,000+ providers.

      • Recurring BillingAutomatic invoices for services that repeat weekly or monthly.
      • Enterprise Account PortalOne login to see and manage many ShiftCare accounts.
      • Client AuthorizationSets aside client funding for specific approved services.
      • Specs before codeRSpec and Playwright tests shipped with every feature.
      • AI-first developmentClaude Code, Cursor, Windsurf and Copilot, day to day.

    2. 2020 – 2023

      Part-time, alongside Cybersoft

      AIA Philippines

      Licensed Financial Advisor

    3. May 2014 – May 2025

      Cybersoft Content Services Inc.

      Senior Software Engineer

      Private BPO company. Led a team building enterprise systems.

      • Led a development teamTook a team from requirements to release.
      • APIs for enterprise appsStable back-end services on PostgreSQL and MySQL.
      • AI-powered app integrationCompany apps connected to GPT-4, GPT-4o and Gemini.
      • Web scraping systemCollects data from websites and outside APIs in the background.
      • Task management systemAn internal tool to assign, track and finish work.
      • Mentored developersCoached mid-level developers through code reviews.
      • Best Developer awardRecognised by Cybersoft as its Best Developer.

    4. 2010 – 2014

      Quezon City University

      Bachelor of Science in Information Technology · Cum Laude

    Skills

    Grouped so you can scan it in ten seconds.

    academic honor

    Cum Laude

    Bachelor of Science in Information Technology · Quezon City University (formerly Quezon City Polytechnic University) · 2014

    Certificate of Recognition awarding Kreezel B. Villanueva Cum Laude for a Bachelor of Science in Information Technology from Quezon City Polytechnic University, 2014

    Backend 11 yrs

    • Ruby on Rails
    • Python
    • PostgreSQL
    • MySQL
    • Supabase
    • REST APIs
    • Sidekiq
    • Apache Airflow

    Frontend

    • Vue
    • React
    • JavaScript
    • Stimulus
    • Next.js
    • Astro
    • Tailwind CSS
    • CoffeeScript
    • HTML · CSS

    Testing TDD · BDD

    • RSpec
    • Playwright
    • Selenium
    • TDD: test first, then code
    • BDD: behaviour as specs

    AI-assisted development 2025 →

    • Claude Code (primary)
    • Cursor
    • Windsurf
    • GitHub Copilot
    • Multi-agent orchestration (Orca, Codex, Antigravity)
    • MCP servers: Figma, Playwright, Linear
    • AI agents
    • OpenAI API
    • GPT-4 · GPT-4o · Gemini integrations

    AI automation new

    • n8n
    • Airtable
    • Pinecone / RAG
    • MCP

    Tools & platforms

    • GitHub
    • GitLab
    • Docker
    • AWS
    • Vercel
    • Figma
    • Linear
    • Jira
    • Postman
    • Cal.com
    • YouTube Data API

    Outlined in green: what I reach for first.

    Dear hiring team (or future client),

    Let's talk.

    I'm open to remote roles and freelance builds. Email is the quickest way to reach me, and my CV has the full story.

    kreezelvillanueva@gmail.com
    Email meDownload CVLinkedIn (opens in a new tab)GitHub (opens in a new tab)