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Projects

Things I have built.

Websites, apps and systems. The code for each one is on GitHub.

All code on GitHub
2026

This website

hirantha.me

My portfolio, free online tools, Sri Lankan exam pages and a tech blog, built and run by me.

  • Free tools that run in the browser, nothing uploaded
  • Exam results and cut-off pages built from official lists
  • A blog with an AI newsroom and an admin panel with its own mailbox
  • Next.js
  • React
  • TypeScript
  • SQLite
  • Docker
How it is builtVisit site
2026

Logistics web app

Ryzera Relay

Delivery planning for a retail chain's overnight store runs: ordering, trip planning, dock loading and proof of delivery in one web app.

  • Store managers, dispatchers, loaders and drivers work on one record per order
  • A planning engine checks every operating rule before a trip is published
  • The driver's phone keeps recording stops with no signal; loader screens in Sinhala and Tamil
  • FastAPI
  • React
  • TypeScript
  • PostgreSQL
  • Docker
2026

Algorithms in C

Rivermede Transit simulator

A public transport simulator for a made-up city that plans journeys with BFS and DFS and measures the work each search does.

  • Bus and train network as a weighted graph: 12 stops, 18 routes
  • BFS finds the fewest rides, DFS with backtracking the fastest way
  • Simulates a day of passengers and profiles both searches by steps and time
  • C11
  • Make
  • POSIX shell tests
Case studyCode on GitHub
2026

Systems programming

Web server in C

A multi-threaded HTTP server written from scratch in C that serves websites and files.

  • A new thread for each connection (POSIX threads)
  • Zero-copy file sending with sendfile()
  • Content types by file extension, and 404 pages
  • C
  • POSIX sockets
  • pthreads
Case studyCode on GitHub
2025

Web application

Hardware repair request tracker

A web app that takes a hardware repair from request to proposal, appointment, repair and payment.

  • Separate dashboards for customers, technicians and admins
  • Technicians send proposals, customers accept them
  • Admin approval for new users and reports on repairs and payments
  • PHP
  • MySQL
  • Apache
  • JavaScript
Case studyCode on GitHub
2026

Android app

Mobile text editor with version control

An Android text editor for code and notes that keeps every version of a file without copying it.

  • Kotlin and Markdown syntax highlighting, undo and redo
  • Version history saved as small changes, with a side-by-side diff
  • Auto-save every 10 seconds to recover from a crash
  • Kotlin
  • Android
  • Room (SQLite)
Case studyCode on GitHub