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ThimiraSadeesha/README.md

Thimira Sadeesha

Full Stack Engineer · Backend Architect · IoT Systems Builder


👋 About Me

I turn complex business challenges into elegant technical solutions. Over 2.5 years at Maxim Impressions, I've engineered systems that have fundamentally transformed enterprise operations — cutting manual workflows by 80%, building RFID asset tracking with 95% accuracy, and slashing query times by 80% through strategic database optimization.

I care deeply about measurable impact: whether that's a well-optimized SQL query saving hours of processing or a Flutter app streamlining workflows for thousands of users — great engineering creates real, tangible value.

🎓 Final Year Project @ University of Moratuwa — IoT-based Accident Detection & Road Safety System integrating real-time sensors, MQTT messaging, and automated emergency alerts.


🚀 What I Bring to the Table

Capability Details
🔧 Backend Architecture High-performance APIs with NestJS, Go, Spring Boot & FastAPI
📱 Mobile Development Cross-platform Flutter apps serving thousands of users
📡 IoT & Real-Time Systems RFID tracking, MQTT pipelines, hardware-software integration
🗄️ Database Optimization 80% query time reduction via MySQL tuning & Redis caching
👥 Team Leadership Mentored 2 junior engineers; drove technical excellence across the team

🛠️ Tech Stack

Languages TypeScript Go Dart Python Java C#

Frameworks & Libraries NestJS Spring Boot FastAPI Flask Angular Next.js Vue Tailwind CSS

Mobile Flutter Android

Databases & Messaging MySQL MongoDB SQLite Supabase Redis RabbitMQ MQTT TypeORM Mongoose

DevOps & Tools Docker Nginx CI/CD Postman Jira N8N RFID


🏆 GitHub Stats


📌 Featured Projects

Project Description
🔄 NestJS CI/CD Pipeline Production-ready CI/CD setup for NestJS applications
🔐 Go Auth API Lightweight, high-performance authentication API built with Go
🤖 N8N AI Recruitment Pipeline Automated AI-powered recruitment workflow built with N8N
🗄️ Repliq DB CLI CLI tool for database replication and management tasks
🧘 Zent App Mobile application built with Flutter
☸️ Node.js on Kubernetes Node.js application deployment and orchestration with Kubernetes
🐘 Postgres Replication (Docker) PostgreSQL primary-replica replication setup using Docker
🌐 My Portfolio Personal portfolio showcasing projects and experience

🎯 Currently Exploring

I'm actively seeking opportunities to build innovative, high-impact systems — particularly in:

  • ☁️ Cloud-native microservices architecture
  • 📡 IoT & real-time data processing pipelines
  • 📱 High-scale web and mobile applications
  • 🧩 Product engineering teams solving meaningful problems

💡 Core Strengths

Problem Solving · System Design · Leadership · Cross-functional Collaboration · Database Design · Fast Learning & Adapting · R&D


📍 Sri Lanka — Open to Remote, Hybrid & Relocation


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  1. Accident-Detection-Mobile-App Accident-Detection-Mobile-App Public

    This mobile app is designed to enhance road safety by detecting accidents in real time using sensors and GPS technology. It automatically sends alerts to emergency contacts and relevant authorities…

    Dart 3

  2. Newspaper-Distribution-Mobile-App Newspaper-Distribution-Mobile-App Public

    Mobile app for newspaper distributors to efficiently manage trips, track real-time locations, view delivery areas, and maintain accurate records.

    PHP 2

  3. Accident-Detection-System-UI Accident-Detection-System-UI Public

    This repository contains the UI for a real-time accident detection and emergency response system, built with Angular 19. It features a customized project file structure for better scalability and m…

    TypeScript 1

  4. Accident-Detection-System-API Accident-Detection-System-API Public

    This repository contains the API for a real-time accident detection and emergency response system. Built with NestJS, it integrates MySQL 8.5 (using TypeORM) for data storage, MQTT and Node-RED for…

    TypeScript 1

  5. Project-Layout-GO Project-Layout-GO Public

    This Go project is organized to ensure modularity, maintainability, and scalability for web application development.

    Go 1

  6. nodejs-k8s nodejs-k8s Public

    A Node.js (NestJS) application containerized with Docker and deployed using Kubernetes, demonstrating container orchestration, service exposure, and basic cloud-native deployment practices.

    TypeScript