Portfolio of Yong Sen Yeoh (Yongsen) — building performant, accessible, and visually rich web experiences with 3D and motion.
Who I am, what I do, and how I help teams ship great software.
Yong Sen Yeoh, a developer offering end-to-end development for custom information systems. I work closely with businesses to design web solutions that modernize workflows, improve data management, integrate innovative tech to optimize operations, and empower decision-making through cutting-edge technology.
Began my journey while studying for my Diploma in Computer Science and Mathematical Computing, laying the foundation for my passion in software development.
Pursued a Degree in Software Engineering while working as a freelance developer for WhatIf Solutions Sdn. Bhd. Graduated with distinction (First Class Honours) and received the university's scholarship, successfully balancing academic excellence with real-world development projects.
Started a 6-month internship at Finexus Group, located at Menara KH in Kuala Lumpur. Demonstrated strong problem-solving skills by passing a logic test on the first day, which resulted in an increased allowance—a testament to my technical capabilities and quick adaptation.
Joined WhatIf Solutions Sdn. Bhd. as a permanent Software Engineer, building on the freelance experience and bringing fresh insights from my internship. Focused on React.js and Next.js, becoming passionate about building fast, modern web applications that solve real business problems.
Promoted to Technical Lead, taking on greater responsibility in leading technical decisions, mentoring team members, and driving the development of innovative solutions. This role allows me to combine technical expertise with leadership skills to help teams ship great software.
Outside of work, a few things keep me curious, active, and inspired—each with its own rhythm.
Pickup games and following the pros—fast teamwork on the court mirrors how I like to collaborate.
Strength training and staying consistent—discipline that carries into shipping reliable software.
Playlists for deep work and live gigs—rhythm and melody when I need to reset or focus.
Chasing light and composition—framing shots trains the same eye I use for UI and detail.
New cities and local food—perspective from unfamiliar streets keeps ideas fresh.
Selected work exploring systems, interfaces, and liquid-glass UI.
Personal finance intelligence—consolidate manual portfolio and household data in one calm workspace for portfolio, cash flow, budgets, and wealth decisions without spreadsheet chaos.
A modern, performant portfolio built with Next.js 15, featuring liquid glass aesthetics, 3D interactions, and MDX-driven content management.
A modern, cloud-enabled web application that allows you to upload Microsoft Word templates, automatically detect placeholders, fill them with user input, and export completed documents. Features Google OAuth authentication and MongoDB cloud storage.
Tools and technologies I reach for regularly—context and examples, not scores. Hover for a short summary, or tap a skill to expand.
Notes on engineering, interfaces, and building for the web.
scrcpy is excellent for Android screen mirroring, but it ships without a GUI—so testers who do not live in terminals struggled. I spent a weekend on a small open-source Windows wrapper that downloads ADB and scrcpy, guides USB debugging, and ships as a normal .exe installer.
A practical look at Retrieval-Augmented Generation: embeddings, vector search, and how to wire them to an LLM—plus how this portfolio implements the same pattern with Next.js, Supabase pgvector, and Hugging Face.
Let's work together. I usually respond within 1–2 business days.
Have a project in mind? Want to collaborate? Or just want to say hello? I'd love to hear from you. Fill out the form or reach out directly through any of the channels below.
Fill out the form below and I'll get back to you as soon as possible.
