Nicholas Dakis

CS student at Queens College interested in backend development.

GitHub LinkedIn Email
Skills
Projects
Level Up!
Gamified health app
Web PWA Android
Tech Stack
Flutter Python Flask PostgreSQL Redis Firebase GitHub Actions CI/CD FCM Pydantic pytest
Features
  • Log meals via barcode scan, search, or manual entry with full macro breakdown
  • Calorie and macro goal tracking with live progress
  • Analytics tab for daily or range-based nutrition review
  • Calorie calculator with BMR and TDEE breakdowns
  • Check in to nearby locations on an interactive map to earn XP
  • Badges, leaderboard, daily XP rewards, and streak tracking
  • Google and email sign-in with cross-device sync
Under the hood
  • 3-layer Flask backend with shared auth middleware across all routes
  • PostgreSQL stored procedures with row-level locking for atomic XP updates
  • Redis caching with distributed locking to prevent cache stampedes
  • Token-bucket rate limiter with daily refills and failure-safe rollback
  • FCM push notifications with automatic stale token pruning
  • GitHub Actions CI/CD — deploys only on passing pytest suite
Google Play Repo README Wiki