hey, i'm

justin abuyuan.

software engineering @ uwaterloo

a glimpse into the products i've crafted, the ideas i've pursued, and the problems i've solved along the way.

React Bacteria Simulator
2024
ReactTypeScriptTailwind
🦠 a React/TypeScript app created to simulate bacterial growth on a dynamically resizable grid that can simulate up to 10,000+ bacterial cells replicating.
Black Magic II: Phantom's Causatum
2019
LuaBlenderRoblox Studio
⚔️ a ROBLOX fighting game i developed alongside an indie development studio. At its peak activity, it had up to 2,000+ active players and had a community of over 20,000+

a collection of the teams i've built with, the systems i've scaled, and the lessons i've carried forward.

1. Flynn Group of Companies
  may 2025 — aug 2025
  💻 software engineering intern
  🏗️ innovating and optimizing processes in the construction industry through software solutions
  
  highlights:
  - developed an internal app used by over 3,000 employees
  - enabled real-time performance monitoring via New Relic logging
  - supported canary releases via LaunchDarkly
1. Caution Tape Robotics
  jul 2025 — present
  🦾 freelance work
  💻 developing internal full-stack applications/tools
  
  highlights:
  - built a full-stack inventory tracker with PostgreSQL, Next.js, and Tailwind to automate inventory management
1. Jitto
  jul 2024 — jun 2025
  💻 full stack engineering intern
  🍅 innovating and optimizing processes in the produce industry through software solutions
  
  highlights:
  - built orders history page, cutting cloud costs 13%
  - scaled backend with AWS Lambda, DynamoDB, and more
  - refactored portal with Tailwind, file size ↓ 30%, load time ↑ 20%
1. Google Developer's Student Clubs
  oct 2023 — may 2024
  💼 technical co-lead
  👨‍💻 guiding and leading fellow computer science students to success