Samudra de Silva - Software Engineer

Full-Stack Crowdfunding Platform

Built a PERN stack (PostgreSQL, Express.js, React, Node.js) web platform enabling users to create, manage, and contribute to fundraising campaigns with a focus on UX, security, and data integrity. This project demonstrates my proficiency in full-stack development, RESTful API design, secure web practices, and applying software engineering principles in a practical, real-world inspired solution.

Secure Authentication & Authorization: JWT-based login with role-based access control (RBAC) for admins and users.
Campaign Lifecycle Management: Launch, monitor, and accept real-time donations.
Admin Interface: Dashboard to oversee users and campaigns.
Donor Engagement: Badge and ranking system to encourage participation.
Activity Logging: Event tracking for traceability and accountability.

PostgreSQLExpress.jsReactNode.jsJWTRBACPostmanFigma

GitHub Source

1 / 10

Endless Runner Game – Unity Project

As part of Unity's Junior Programmer pathway, I developed a fast-paced endless side-scrolling runner game, focusing on enhancing the player's experience through sound and visual effects.

Dynamic Background Movement: Created an endlessly repeating background to simulate continuous motion, essential for side-scrolling games.
Responsive Jump Mechanics: Programmed precise jump controls, allowing the player to avoid oncoming obstacles effectively.
Audio Integration: Added background music and sound effects for jumping and crashing events to provide immediate feedback.
Particle Effects: Designed and integrated particle systems, such as dirt splatters and explosion effects, for enhanced visual feedback.

C#UnityParticle SystemsGame Design

2 / 10

Disaster Monitoring & Safe Exit Path Navigation (IoT)

An IoT project featuring dynamic risk-aware pathfinding, real-time scalable building map simulations, and a Unity 3D visualization dashboard.

Weighted A* Algorithm: Developed for dynamic, risk-aware pathfinding based on real-time hazard data.
Real-Time Visualization: Built a Unity 3D dashboard for intuitive monitoring of hazard spread and evacuation routes.
Hardware Integration: Contributed to sensor integration (ESP32, flame, water, MQ-2 smoke, RFID) and responsive LED floor guidance paths.
System Architecture: Designed a node-based scalable building map linked with MQTT for low-latency, reliable emergency communications.

IoT / ESP32Unity 3DMQTTA* AlgorithmC#

GitHub Source

3 / 10

Undefined Game – Coin Ceylon (Pvt) Ltd

Contributing as part of a development team to a culturally inspired 2D game integrating Sri Lankan folklore elements. Developed under Coin Ceylon Labs.

Team Credits: Janith Chamikara (PM), Tharindu Senanayke (Designer), Anuja Kalhara (Developer), Samudra De Silva (Developer), Sathara Anuradha (Former Developer).
Role & Responsibilities: Designing game mechanics, implementing core logic, level design, and storyboarding.
Engine & Tools: Exclusive use of Godot Engine and GDScript for all logic implementation.
Note: Developed under contract; all source code and assets are proprietary to Coin Ceylon (Pvt) Ltd.

Godot EngineGDScript2D Game DevelopmentStoryboardingTeam Collaboration

4 / 10

Secure Deployment of OpenClaw with Telegram Automation | GitHub monitoring agent

A secure deployment of OpenClaw, an open-source framework transforming large language models (LLMs) into autonomous agents connected to Telegram.

Autonomous Operation: Operates 24/7, executes multi-step workflows, integrates with external APIs, maintains context, and schedules tasks.
Secure Infrastructure: Hosted on Azure VM (Debian 13) via Tailscale VPN with zero public internet exposure and firewall rules.
Advanced Security Layers: Token-based gateway authentication, restricted port forwarding, and sandboxed integrations.
GitHub Monitoring Agent: A custom Telegram agent that detects real-time commits, analyzes code changes, and generates contribution statistics.

OpenClawTelegram botAzureTailscale VPNLLMs

5 / 10

RitzClothing B2B E-Commerce Platform Development

A comprehensive B2B MERN stack E-Commerce platform for bulk ordering, featuring real-time chats, automated quotes, and seamless product browsing.

Order Management: Specialized inquiry-based bulk/sample order system coupled with quick order history reordering.
Product Discovery: Detailed product catalog supporting advanced filtering, sorting, client reviews, testimonials, and wishlist functionality.
Real-Time Interaction: Built-in supplier-buyer chat facilitated via raw WebSockets for instant negotiation.
Administration & UI: Extensive admin dashboard to manage products, orders, customers, and reviews (including pinning and removal), plus generating comprehensive business reports. Fully responsive design with interactive zoomable product images.

PostgreSQLExpress.jsReactNode.jsWebSockets

GitHub Source

6 / 10

3D Graphics Visualization App

An interactive web application for rendering, manipulating, and animating 3D objects with extensive camera and environmental controls in real-time.

Real-Time Object Manipulation: Granular control over primary and background 3D objects including position, rotation, scale, color, and mirroring across all axes.
Advanced Camera Controls: Free-view camera system with precise coordinate positioning, rotation mapping, zooming capabilities, and customizable POVs.
Interactive Animation & State: Built-in animation settings with adjustable playback speeds, scene presets (like Top-Down View), and instant state resetting.
Dynamic Rendering Engine: Capable of rendering various object types (cubes, octahedrons, cylinders, toruses) with configurable opacity over mapped grids.

Three.js / WebGLReact / Next.jsJavaScript/TypeScript3D Rendering

GitHub Source

7 / 10

Game of Life – Pan & Zoom Edition

An interactive, high-performance implementation of Conway’s Game of Life featuring pan/zoom functionality, multi-threaded computation, and real-time visualization.

Performance Optimizations: Utilizes Numba (@njit with parallel=True) for fast, parallel computation to update large grid worlds (8000×4000 cells) seamlessly.
Interactive Pan & Zoom Space: Smoothly pan and zoom camera controls around a 1200×400 viewport overlay via mouse bindings with dynamic cell scaling.
Live Debugging Modes: Toggles between serial (single-threaded) and parallel (multi-threaded) modes to benchmark live cells, CPU usage, and GPS (Generations Per Second).
Simulation Controls: Interactive grid allowing left-clicks to toggle individual cellular states and keyboard hotkeys to generate random 15K live cell configurations.

Python 3.13+PygameNumpyNumbapsutil

GitHub Source

8 / 10

Samudra’s POS – Windows Desktop Point-of-Sale

A comprehensive, offline-first Point of Sale (POS) and shop management system built for Windows using Tauri, React, and Fastify. It provides enterprise-level features like strict serial number tracking, advanced returns, layered warranties, and repair job management in a completely offline environment.

Point of Sale & Checkout: Idempotent sales engine, multiple payment types, and historical receipt accuracy via item snapshots.
Deep Inventory & Serial Tracking: Granular lifecycle tracking of high-value items, automated stock adjustments, and custom barcode generation.
Advanced Returns & Exchanges: Return dispositions (restocked/written-off), complex exchange logic, and configurable return policies.
Warranty & Repair Management: Multi-layered warranties, claim tracking, technician diagnostics, and integrated parts billing.
Administration & Security: Cryptographic offline licensing (Ed25519), comprehensive audit logs, and automated scheduled SQL backups.
UX & App Lifecycle: Touch-first interface with floating keyboard, global shortcuts, and non-blocking OTA update handling.

TauriReactTypeScriptFastifyPrismaPostgreSQLRedisZodZustand

GitHub Source

9 / 10

Project Screenshot 1

Tourism Management System | Node.js Microservices

A comprehensive backend system for a Tourism Management System using a microservices-based architecture designed to handle core travel platform operations. The project is structured as multiple independent services coordinated via an API Gateway, improving maintainability, scalability, and independent deployment.

Microservices Architecture: Comprises 10 independent domain services including auth, bookings, packages, payments, notifications, reviews, chat, and admin.
API Gateway & Orchestration: Routes client requests efficiently, centralizes rate-limiting and security middleware, and aggregates API endpoints.
Prisma ORM & PostgreSQL: Implements strongly typed data schemas independently for each domain service.
Real-Time Communication: Integrated Socket.IO and Redis for real-time customer support chat and dynamic system updates.
Authentication & Payments: Secure JWT authentication with role-based access control, coupled with transactional booking and payment flows.

Node.jsExpress.jsPrismaPostgreSQLJWTSocket.IORedisSupabase

10 / 10