Profile Sketch

Chosen Realm Gabrillo Alfeche

Senior Software Engineer Polyglot Architecture & Cloud-Native Solutions

I am a versatile Senior Software Engineer with over 8 years of experience spanning Backend (Java/C#), Mobile (Android/Kotlin, Flutter), and Web (Vue.js/Angular). I specialize in modernizing complex legacy monoliths into highly scalable, cloud-native microservice ecosystems. Operating as a "T-shaped" engineer, I excel in Backend and Microservices architecture while possessing proven, hands-on capability in Mobile, Frontend, and DevOps. My passion for infrastructure means I build robust software from the bare-metal homelab all the way to the native mobile client.

Year 2026
Gabrillo Signature
Gears
Network

II. The Anatomy of an Engineer

Backend & Architecture

  • • Java (Spring Boot, J2EE)
  • • C# (.NET Core, Azure Functions)
  • • Microservices
  • • REST APIs
  • • SAML SSO/Security

Frontend Web

  • • JavaScript
  • • TypeScript
  • • Vue.js
  • • Angular
  • • React
  • • Svelte/SvelteKit
  • • Tailwind CSS
  • • HTML/CSS

Mobile Development

  • • Native Android (Kotlin, MVVM, Jetpack Compose, Room DB)
  • • Cross-Platform Mobile (Flutter/Dart)

Cloud & DevOps

  • • Docker
  • • Kubernetes (Talos OS)
  • • AWS
  • • Azure DevOps
  • • Proxmox VE
  • • TrueNAS
  • • OpenWrt
  • • CI/CD (GitLab)

Databases

  • • PostgreSQL
  • • SQL Server
  • • Oracle DB
  • • Redis
Anatomy

III. The Chronicles

Senior Backend Software Developer

Touch-Fire Trading
Sept 2024 – Present
  • Acting as lead architect, successfully decoupled a legacy monolith into a modernized C#/.NET Core microservice ecosystem.
  • Designed modular APIs, implemented dependency injection, and managed zero-downtime data migrations using SQL Server.

Software Developer

ROMTech
March 2026 – May 2026
  • Created Azure Functions as the integration 'glue' for an enterprise system handling massive patient care info & billing services (C#, .NET, Azure DevOps).

Independent Software Consultant

Enterprise & Gov
July 2022 – Nov 2025
  • Led the security overhaul of massive SG Government legacy systems (SAML SSO/SLO for Java J2EE).
  • Refactored storage architecture to centralized URL-based state management (Java/Angular/Redis).
  • Developed custom, high-performance web solutions (WordPress/Tailwind) and automated business pipelines via Google Apps Script.

Junior Associate Software Developer

Azeus Systems
May 2018 – March 2024
  • Core maintainer of 'Convene' enterprise Android app. Refactored architecture to MVVM, reducing crash rates by ~15%.
  • Engineered eAGM and procurement modules using Java Spring Boot & Vue.js, integrating video streaming and JWT auth.
  • Built dynamic data extraction tools, automated CI/CD pipelines, and conducted load testing using Gatling and Flood.io.
Polyhedron
Bridge

IV. Notable Inventions

( Swipe or click cards to browse )

Procramming

Available Now

SvelteKit, Tailwind CSS

A comprehensive quiz platform for mastering programming concepts across multiple languages, including Python, JavaScript, Java, and more.

Visit Procramming

PitchViz

Available Now

Flutter, Dart, Audio Processing

A cross-platform mobile app that listens to and processes real-time audio to visualize user's pitch for intonation training.

Get it on Google Play

Artisan Letters

Available Now

Next.js, Tailwind CSS, React

A beautiful web platform that crafts and hosts personalized digital letters for special occasions, featuring scheduled delivery and unique shareable URLs.

Visit Artisan Letters

Enterprise Self-Hosted Cloud

Proxmox, K8s (Talos OS), TrueNAS, OpenWrt

Architected a bare-metal cloud featuring dual nodes, local Kubernetes cluster, centralized storage, and custom network gateway.

Open Source & Custom Apps

C, Shell, Python, JS, Hugo

Developed a low-level C library for Raspberry Pi Pico memory management, custom applications for automated data syncing and system cleaning scripts, OpenWrt IP monitoring, and custom Hugo themes.

View on GitHub

Personal Engineering Blog

Available Now

Hugo, Alpine.js, Tailwind CSS

A personal technical blog showcasing articles on DevOps, homelab networking, and web development. Built with a custom Hugo theme 'Sayun' designed from scratch.

Read the Blog

The Byte Alchemist

Available Now

Next.js, Tailwind CSS, React

A professional freelance portfolio focusing on 'Digital Alchemy'—transmuting ideas into digital gold through bespoke web and mobile applications.

Visit The Byte Alchemist

V. Epilogue & Accolades

Education

Bachelor of Science in Computer Science
University of San Carlos (2018)

Awards

  • 🏆 Finalist (AI App), Accenture Program the Future '17
  • 🏅 Semi-Finalist (Game Rev), Accenture Program the Future '16

Publications

Main author of "FIT N MODEL: A Recurrent Neural Network Based Cardio-Activity Recommender," published in the Science International Journal (2018).

Chosen Realm G. Alfeche