Portfolio / SASMITHX
Associate Software Engineer
I design and engineer modern full-stack applications with a passion for performance and scalable architecture. I enjoy building systems end-to-end, improving developer experience, and continuously exploring new technologies.
About
I'm Sasmith Manawadu, an Associate Software Engineer specializing in enterprise software development, distributed systems, and DevOps-driven workflows. I build scalable, maintainable architectures that support complex business requirements and long-term growth.
My experience spans full-stack engineering (React, Next.js, Electron), backend development (Nest.js, Spring Boot, Express.js), and cloud infrastructure, where I integrate CI/CD pipelines, containerization, and automation into everyday development.
Outside of coding, I enjoy learning new tools, exploring design systems, and collaborating with teams to ship thoughtful features.
At a Glance
Developer
Crafting elegant solutions through code.
Innovator
Pushing boundaries with creative solutions.
Learner
Continuously expanding knowledge.
Experience
December 2025 – Present
INTELLEON
Hybrid
Developing full-stack, high-performance applications powered by modern frameworks and best practices. I work across frontend and backend layers to create fast UIs, optimized APIs, and maintainable system architectures. My responsibilities include improving application performance, integrating new technologies, and ensuring consistent development standards.
June 2025 – December 2025
INTELLEON
Hybrid
Implemented features, fixed bugs, and enhanced UI and backend performance across full-stack applications.
Skills
Education
2025 – 2026
University Of Greater Manchester, United Kingdom
BSc (Hons) in Computer Science
Studied advanced computer science modules including Emerging Technologies, Applied Machine Learning, Research & Professional Issues. Developed practical skills in modern software engineering, data-driven development, and technical research applied to real-world problem domains.
2023 – 2025
IJSE(Institute Of Software Engineering)
Software Engineering Higher Diploma
A comprehensive software engineering program covering the full SDLC. Gained advanced proficiency in Object-Oriented Programming, Design Patterns, and Software Architecture. The curriculum bridged core development with modern technologies, including Advanced API Development, Mobile Application Development, and Python for Data Science & AI.
2019 - 2021
Kularathna National College
A/L Physical Science
Advanced Level in Maths Stream.
Selected Work
WEB
A modern portfolio platform for developers with dynamic content, theming, and analytics.
Tech Stack:
Dec 2025 - Present
WEB
VanguardVote is a modern polling and voting platform that provides users with an intuitive and secure way to participate in elections, surveys, and opinion polls. This frontend application ensures a responsive and seamless user experience.
Tech Stack:
Feb 2025
WEB
Explorify is a modern, feature-rich travel blogging platform designed for immersive experiences, robust performance, and ease of use.
Tech Stack:
Feb 2025
WEB
Apex Manager is a user-friendly web app for manage data. It enables efficient handling of entities like customers and items, offering a seamless and responsive experience for quick data management.
Tech Stack:
Jan 2025
WEB
A simple, interactive task tracker built with React that lets users manage their daily goals by adding, removing, and checking off tasks.
Tech Stack:
Aug 2024
API
This is a Spring Boot-based system. It provides RESTful APIs for managing crop , equipment , field , staff , user , vehicle , monitoring log and transactions. The project uses Spring Boot, JPA, Hibernate,Spring Security, and MySQL for database connectivity.
Tech Stack:
Nov 2025 - Dec 2025
API
This backend service powers an advanced news fetching and interactive user participation.
Tech Stack:
Jul 2025
API
A robust, production-ready REST API built with NestJS, featuring user authentication, product management, role-based access control, and advanced caching mechanisms.
Tech Stack:
Aug 2025 - Sep 2025
API
FlaskDataMateX is a Python Flask-based web application designed to manage customers, items, and transactions. This project provides RESTful endpoints for performing CRUD operations on customers, items, and transactions.
Tech Stack:
2023
API
This backend service powers an advanced voting and polling system, ensuring secure, efficient, and interactive user participation.
Tech Stack:
Feb 2025
MOBILE
VELORA is a sleek, cross-platform news app built with React Native and Expo that delivers a unified experience across iOS, Android, and Web. Featuring secure JWT authentication and a modern dark UI, it allows users to effortlessly discover, filter, and bookmark global news articles for a seamless reading experience.
Tech Stack:
Jul 2025 - Sep 2025
DESKTOP
An Electron-based desktop application for organizing projects, tasks, and notes with offline-first support.
Tech Stack:
Nov 2025
DESKTOP
Inventory management system digitizing juice bar business operations with supply chain tracking and sales analytics capabilities.
Tech Stack:
Nov 2023 - Dec 2023
DESKTOP
Library management system with CRUD operations using Hibernate ORM, role-based access control, and real-time inventory tracking.
Tech Stack:
Mar 2024
DESKTOP
Real-time chat application implementing multi-threaded client-server architecture with socket programming for low-latency communication.
Tech Stack:
Jan 2024 - Feb 2024
DESKTOP
Modern implementation of classic strategy game featuring responsive UI/UX and win-condition algorithms with minimax optimization.
Tech Stack:
Oct 2023
COLLABORATIVE
Advanced ML pipeline for medical case classification & clustering using TF-IDF + Logistic Regression. Features 13+ medical specialties, comprehensive EDA, t-SNE visualizations, and production-ready deployment.
Tech Stack:
Sep 2025 - Oct 2025
COLLABORATIVE
SoftWater is a full-stack water billing management system developed for Softcare Technologies to automate utility operations. It streamlines the entire billing cycle by managing customer data, tracking water consumption, generating accurate invoices, and recording payments, replacing manual workflows with an efficient digital solution.
Tech Stack:
Aug 2025 - Sep 2025
COLLABORATIVE
Academic collaboration platform implementing real-time messaging, achievement sharing, and community engagement features.
Tech Stack:
Aug 2024 - Nov 2024
What I Do
Build scalable, secure enterprise software tailored to streamline business operations.
Build responsive web apps and websites for seamless user experiences across all devices.
Create intuitive iOS and Android apps with top performance, usability, and on-the-go connectivity.
Develop powerful desktop apps with native experiences for Windows, macOS, and Linux.
Integrate and orchestrate APIs to connect services, automate workflows, and share data reliably.
Craft clean, modern interfaces focused on usability, accessibility, and delightful user journeys.
Build secure, high-performing e-commerce solutions optimized for conversions and smooth checkout.
Design and develop multi-tenant SaaS products with scalable architectures and subscription workflows.
Contact
Whether you're exploring ideas, improving an existing product, or just want to connect, feel free to reach out. I'll get back to you as soon as possible.