Multi-Disciplinary Developer & Creator
Kumararatne(aka. KNK)
Building software experiences with engineering and creativity.
I'm Neethila Kumararatne, a Sri Lanka-based Full-Stack Developer focused on building modern web applications, mobile apps, AI-powered solutions, and digital products. I work across frontend development, backend systems, APIs, databases, machine learning workflows, and user-centered experiences.
With experience in technologies including React, Node.js, TypeScript, Flutter, Python, and cloud-based development workflows, I enjoy creating scalable and high-performing solutions that solve real-world problems. My work spans full-stack systems, AI and machine learning model development, interactive applications, intelligent systems, and responsive digital experiences.
Beyond engineering, I bring experience in design and creative production, allowing me to think beyond functionality alone. Design principles, visual storytelling, and creativity influence how I build products and how users interact with them.
As a freelancer, I've collaborated with international clients and delivered hundreds of projects across development, design, and creative work, strengthening my communication, problem-solving, and product-thinking skills.
I'm constantly exploring emerging technologies, improving my craft, and building experiences that combine clean code, thoughtful design, artificial intelligence, and meaningful impact.
Building across product engineering, data science, and creative media using a comprehensive ecosystem of modern tools and frameworks.
React, Angular, Tailwind, HTML5, CSS3, Bootstrap, MUI
Node.js, Express, Spring Boot, .NET, PHP, Flask, FastAPI
MongoDB, Firebase, MySQL, MS SQL, PostgreSQL, Supabase
Flutter, Dart, React Native
PyTorch, Scikit-learn, MATLAB, ML Modeling
TS/JS, Java, Python, C#, Dart
CI/CD, Docker, Git, GitHub
Figma, Photoshop, Premiere, FL Studio, Canva
A selection of recent projects showcasing engineering precision and creative problem-solving.
Developed a full-stack application using React, Node.js, and FastAPI, integrating ML-driven audience segmentation with KModes and Agglomerative hierarchical clustering.
Implemented automated email scraping with Selenium and built a GDPR-compliant delivery system using SendGrid and Redis Bull.
Built a real-time analytics dashboard to track open rates, click-throughs, and conversion metrics, enhancing data-driven decision-making.
React (Vite) · TypeScript · Tailwind CSS · Node.js (Express) · Python (FastAPI) · MongoDB · Redis · SendGrid · Docker · Selenium · Recharts · scikit-learn · Git
A modern enterprise platform designed to help organizations measure, manage, and report environmental impact through data-driven insights, carbon emissions tracking, and ESG reporting.
Contributed to the development of core platform features, building scalable frontend and backend components while focusing on performance, maintainability, and enterprise-level functionality.
React · Spring Boot · Java · REST APIs · Tailwind CSS · PostgreSQL
Built an interactive design tool using React.js, Three.js, and Tailwind CSS, enabling furniture arrangement, real-time material updates, and 3D visualization with lighting effects.
Implemented 2D layout tools with the HTML Canvas API and 3D rendering using WebGL and HDR environment maps for photorealistic output.
React (Vite) · Three.js · Tailwind CSS · HTML Canvas API · GLB models · HDR environment maps · WebGL
Developed a classification model using MATLAB’s Deep Learning Toolbox to authenticate users based on unique acceleration-based movement patterns.
Designed and trained the ML model to analyze behavioral biometrics, achieving accurate user identification through movement pattern recognition.
MATLAB (Deep Learning Toolbox)
A multidisciplinary approach where technology, creativity, and experience come together.
While software development is my foundation, creativity shapes how I approach every project. My work extends beyond writing code — combining design thinking, visual storytelling, and creative exploration to build digital experiences that feel intuitive, engaging, and memorable.
I believe great products are created when engineering precision meets creative thinking. Different disciplines have influenced how I solve problems, communicate ideas, and design experiences for people.
Building scalable software, intelligent systems, and creative experiences.
Have a project in mind or just want to say hi?
I'd love to hear from you.
Location
Available Worldwide
