N.s.kariyawasam

Full Stack AI & Mobile Software Engineer

Jun 2023 - Present • 3 yrs 2 mos

Successfully architected and delivered 20+ custom software solutions for international clients over the past 2 years. As a Full Stack AI & Mobile Engineer, I specialize in building end-to-end applications that drive real business value, bridging the gap between innovative AI technologies and flawless user experiences. My approach is highly problem-oriented: I don't just write code; I design scalable architectures, optimize workflows, and deliver market-ready digital products. Core Areas of Expertise: • Mobile App Development (Flutter/Dart): Engineered high-performance, cross-platform applications featuring clean architecture, custom animations, and seamless UI/UX. Experienced in integrating complex APIs, local storage, and secure biometric authentications. • Artificial Intelligence & LLM Integrations: Developed intelligent RAG (Retrieval-Augmented Generation) pipelines, NLP-driven chatbots, and AI agents using OpenAI, LangChain, and vector databases (Pinecone) to automate complex data extraction and enterprise knowledge bases. • Backend Engineering & Automation: Built robust, scalable backends and secure RESTful APIs using Node.js, Python (FastAPI/Django), and Firebase. Developed advanced Python automation scripts and smart bots to handle heavy tasks and bypass complex web restrictions. • Interactive Data Dashboards: Crafted highly responsive and interactive web dashboards (React.js) tailored for enterprise data visualization and system management. I take full ownership of my projects—from initial concept and database design to final production deployment and ongoing maintenance. Whether you need a secure dating app, an automated social media ecosystem, or an enterprise AI concierge, I have the technical depth to bring your vision to life.

Software Engineering Intern (AI & Full Stack)

May 2025 - Nov 2025 • 6 mos

Completed an intensive 6-month software engineering internship at Trace Expert City, working directly with senior engineers to design and develop AI-driven enterprise solutions. My primary role was focused on full-stack development and integrating Large Language Models (LLMs) into real-world business applications. My Role & Daily Responsibilities: • Research & Development (R&D): Researched and implemented modern AI architectures (RAG pipelines, LangChain) to solve complex data extraction problems for enterprise clients. • Full-Stack Implementation: Played a key role in the "BizLangAI" project, independently developing both the React (Frontend) dashboard and the Python FastAPI (Backend). • Data Engineering: Designed secure workflows to process sensitive CSV and PDF data, utilizing Pinecone vector databases and OpenAI Tool Calling for automated data visualization. • Code Quality & Testing: Maintained high-quality code standards. Tested APIs via Postman and debugged complex AI hallucination issues to ensure 100% accurate system outputs. • Agile Collaboration: Participated in daily stand-ups and collaborated with cross-functional teams to translate business requirements into scalable software features.