KY's portfolio

About Me

More about myself

Hey! I'm Kai Ying, a Computer Science student studying in Nanyang Technological University, Singapore. I learn best by doing and love the thrill of solving problems. People often describe me as humorous, approachable, and hardworking.

In my free time, I enjoy watching movies, exercising, and picking up new technical skills through personal projects and hackathons. I'm currently exploring different areas in tech, with a strong interest in Software Engineering and Artificial Intelligence. Throughout my journey, I've built some amazing projects I'm proud of (including this website) so do check them out!

I'm also open to internships and collaborations in the tech industry. If you’re working on something exciting that aligns with my skills and experience, don’t hesitate to reach out through the Contact section below.

Projects Contact

Skills & Strengths What I Bring

Programming Languages & Frameworks

Python

Java

C++

HTML5

CSS

JavaScript

React

Next.js

LangChain

PostgreSQL

Git

Development Tools & practices

Visual Studio Code

Eclipse

IntelliJ

Jupyter Notebook

GitHub

Git Bash

Postman

DBeaver

Docker

Amazon Web Services (AWS)

MAMP

PhpMyAdmin

Hugo

Unit Testing

Lint Testing

DevOps Principles

CI/CD

Cloud Computing

DevOps

Data Structures and Algorithms

Object-Oriented Programming

Computational Thinking

Technical Project Management

Agile Methodology Practitioner

Prompt Engineering

Attributes

Analytical

Detail-Oriented

Fast Learner

Growth Mindset

Creative Problem Solving

Critical Thinker

Time Management

Problem-Solver

Effective Communicator

Reliable

Self-Motivated

Team Player

Adaptable

Skilled Multi-tasker

Interpersonal Skills

Experience My Professional Journey

1st Place Winner - AI Risk Analytics Platform

Led a team of 5 to victory among 13 teams by developing an innovative AI-powered risk analytics platform.
Engineered high-performance risk metric APIs with optimal runtime and accuracy, successfully deployed on AWS EC2.
Developed a comprehensive full-stack solution featuring LangChain RAG pipeline for investment guideline extraction, AI-driven breach detection, and GPT-4-mini powered chatbot.
Created dynamic dashboards for reporting and compliance analysts, streamlining their workflow and decision-making process.

Software Developer Intern

Built and tested RESTful APIs using Java, Spring Boot, and Postman, integrating SQL via DBeaver to reduce data retrieval time by 20% on the Freya platform.
Built a new feature using Java for Freya to recalculate freight invoice adjustments using historical pricing data, improving cost accuracy despite fluctuating charges.
Automated routine tasks and system debugging using Python scripts.
Applied object-oriented principles, good coding practices, unit testing, and documentation across all development work.
Participated in daily stand-ups and sprint planning as part of the Developer team’s Agile ceremonies.
Gained hands-on experience with AWS (incl. Cognito), Docker, CI/CD and Git/GitHub for DevOps and team collaboration.

Product Design & Development

Collaborated with a team of 4 to research and validate market opportunities for GovTech's no-code platform, BoB.
Focused on sustainability-focused sectors and proposed innovative features including OCR-based data extraction.
Designed auto-matching eligibility systems and proposed blockchain solutions for secure certificate verification.

Frontend Developer

Developed a web-based Minimart and Voucher System for Muhammadiyah Welfare Home as part of a 4-person team.
Led frontend development using React for building dynamic, reusable components and Next.js for optimized server-side rendering.
Designed and implemented responsive user interfaces using HTML, CSS, and JavaScript, ensuring seamless cross-device compatibility.

Healthcare, Surgery Centre Intern

Handled patient registration and guided pre-op procedures in a high-traffic environment, strengthening communication and attention to detail.
Supported frontline operations by addressing inquiries and coordinating with medical staff, ensuring smooth daily workflow.
Reduced patient wait time by 20%, demonstrating my ability to optimise workflows and apply process improvements.

Ticketing Staff

Managed high volumes of customer interactions during peak hours, honing my multitasking and time management skills.
Processed ticket sales, answered inquiries, and resolved issues, demonstrating effective problem-solving and clear communication.
Improved customer satisfaction by 15%, showcasing my ability to work under pressure and deliver efficient solutions.

Projects Each project represents a step in my journey, from learning the basics to solving real-world problems. Whether it's a solo build or a collaboration, I focus on writing clean code, thinking creatively, and I'm always improving. Below are some of my projects that I'm proud of.

TechPulse: Your Personalized Tech Digest

Built a production-ready tech news platform with Flask, PostgreSQL, Redis, and Docker, including automated RSS ingestion via scheduled GitHub Actions. Engineered a hybrid topic classification system combining keyword rules with Hugging Face zero-shot model to personalize article feeds. Implemented on-demand AI summarization (TL;DR and key points) using Chrome's on-device AI for low-latency, privacy-conscious summaries. Designed an analytics dashboard surfacing trending articles, topics, and companies from user engagement data, with secure auth and email-based password reset.

View in GitHub View Demo Video

CareRoute

Developed with a team of 5 an accessibility-focused navigation web app using Node.js, Express, React (Vite+TypeScript), and Supabase/PostgreSQL. Built role-based access control (Elderly, Admin, Caregiver, Volunteer) with secure authentication via Google OAuth API and hashed-salted passwords. Implemented real-time live tracking and geocoding using Google Maps API and Socket.IO for seamless navigation experience. Authored comprehensive system documentation and conducted Black Box and White Box testing to ensure robustness and reliability across all core functionalities.

View Demo Video

Build-To-Order (BTO) Management System

Built a Java-based BTO Management System in a team of four, applying object-oriented principles like encapsulation and SOLID design. Implemented core features such as applicant registration, status tracking, and flat booking using a 5-layer architecture and file-based storage via CLI. Documented the system with UML diagrams and sequence diagrams, contributing to scalable, maintainable design decisions; earned an A grade.

View in GitHub

Student Team Formation System

Developed a student team formation algorithm in Python with a team of five, balancing school, gender, and CGPA without using external libraries. Processed 6,000 records and visualized team diversity using matplotlib and seaborn for clear evaluation. Applied computational thinking to design modular solutions and documented the project in a Jupyter Notebook; earned an A grade.