Security / PowerShell
EFI BootMgr Cert Check
PowerShell audit script deployed via ManageEngine that mounts the EFI partition and validates the boot manager signing certificate against the Windows UEFI CA 2023 chain.
PowerShellUEFISecure Boot
Software Engineer - AMBALONG.DEV
John Alvin Ambalong
Ruby on Rails : Full-Stack Development
Curious by nature, stubborn by habit.
I build real things, ship them, and show up every day to get better.
Status / Open to workLocation / Walla Walla, WAFocus / Rails / Backend / DevOps
Currently Building
Pangu Terminal
Resource-optimization platform for Wuthering Waves
- –Built a service-based planner that queries 10+ static cost tables across character and weapon upgrade paths, keeping game rules and business logic independently testable
- –Detects 3-to-1 synthesis opportunities from surplus lower-tier materials and reconciles EXP potion equivalence across tiers to verify plan completeness
- –Inventory edits trigger Turbo Stream re-renders of the entire synthesis family, reflecting recalculated craftable counts without a page reload
- –Waveplate Optimizer estimates runs and Waveplate cost per deficit material by farming source, ranks source types by deficit coverage, and converts EXP potion deficits to higher-rarity drop equivalents via exp_value
Ruby on Rails 8.1HotwirePostgreSQLDockerKamal 2
Other Work
Additional Projects
A selection of personal projects showcasing different skills and technologies.
CLI / Game Logic
Ruby CLI Chess
Terminal chess engine in pure Ruby. Implements legal move validation, collision detection, and checkmate detection via board-state simulation across modular Board, Piece, and Player classes.
RubyOOP
Toolkit
Technical Skills
Technologies and concepts I work with to build production-ready applications.
Backend
Ruby on Rails·Hotwire (Turbo / Stimulus)·PostgreSQL·ActiveRecord·RESTful APIs·Service Objects·MVC·OOP
Frontend
JavaScript·HTML5·CSS3·Stimulus.js·Rails Views (ERB)
DevOps
Docker·Linux·DigitalOcean·Kamal 2·Git·PowerShell
Practices
Minitest·TDD·N+1 Prevention·Service-layer Architecture
About
The person behind the work
Software engineer, early career, graduating June 2026 with an AAS in Software Design from Walla Walla Community College. Currently working in Tech Services at Walla Walla Community College, supporting campus operations and analyzing lab usage data to inform department resource allocation decisions.
I build on the side with the same discipline I bring to work. Pangu Terminal is live in production.
I read, I go to the gym, I show up consistently.
Contact
Available for the Right Opportunity
I'm looking for an engineering role, remote or Washington State.
If you're building something interesting and value someone who builds and delivers, let's talk.