Senior Software Engineer (Myers-Briggs INTJ)

Specializations:

• Payments & Financial Systems Engineering
• Scalable Backend Systems (Ruby on Rails + Infrastructure)
• API Architecture & Integration Systems

I ♥️ the Ruby and Ruby on Rails open source software and tooling ecosystem for developing web applications.

• Sportsara MVP - A simple app that estimates personal calories burned per point played through badminton match score reporting

  • Optionally, app offers a way for players to opt-in and track badminton doubles players' ELO pair ratings

• Brief How Sportsara Works:

  • For every badminton match point recorded:

    • An estimated 1 calorie burned per point played will be tallied for an individual
    • [Optional] A modified ELO rating, tailored to badminton, will be adjusted for the playing pair

  • The aim is a standard progress and accountability app for a badmiton playing exercise pair

  • Problem: Sports ELO is non-standard across organizations, subjective and a gatekept player rating system. Sportsara is an attempt to make pair level ratings fair, accessible, objective and fun for everyone.

  • Inspo: ELO Rating System for Chess and Beyond

• Programming
• Badminton
• Chess (1640 US Chess Federation ELO)
• Karaoke (not bad, but not good)
• Bitcoin & Bitcoin Mining Braiins Mini Miner BMM 101
• Beginning Mandarin: 你想不想boba奶六茶吗？

• Cosmic Conscioussness by Richard Maurice Bucke
• Hooked: How to Build Habit-Forming Product by Nir Eyal
• Rails 8 ActiveStorage Docs + Cloudflare R2 Image Variant Docs
• Heroku ruby-vips image processing 512MB memory limits and offload to Cloudflare
• Web app & db request performance tuning: Heroku Postgres */20 db connection limit - process & thread saturation
  • Rails 8 Solid Queue - 1 process * 3 threads + 1 dispatcher + 1 thread monitor = 5 db pool connections
  • Reserved db connections:
    • 2 reserved buffer for rails console / heroku run rails c / psql
    • 1 reserved buffer for migrations / release phase
    • 1 reserved buffer for Heroku system maintenance monitoring
    • 1-2 reserved buffer for traffic spikes / connection leaks /deploy overlap
    • 14-15 safe app connections (web process * web threads, queue process * queue threads + queue dispatcher + queue thread heartbeat monitor, any cache, any cable)
    • DB engineering rule of thumb: Keep 20-30% db connections open for reserved system related maintenance

• "What you do for yourself, you're doing for others, and what you do for others, you're doing for yourself." — Phil Jackson, Eleven Rings: The Soul of Success

• Confucius say: "Man who run in front of car get tired; man who run behind car get exhausted." — Confucius on driving the car and staying focused in the moment

• Kent Beck on TDD, AI agents and coding

• Steve Jobs on Agency

Ruby	Java	C	JavaScript	CSS3	HTML5	Perl	QBasic

Rails 8	Gosu	Turbo

PostgreSQL	MongoDB

Docker	Heroku	Cloudflare	Cloudflare Workers	Sentry	Stripe

Ubuntu	Umbrel	macOS

Vim	Git	Slack	Linear

Cursor	ChatGPT	Codex AI Agents	GitHub Copilot