Previously built data platforms at Tencent scale

Hi, I'm Kelvin You

I build high-performance React applications that scale. From data platforms serving millions of users to SaaS products that drive real business outcomes.

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About Me

About Me

My Journey

Frontend Engineer with 3+ years of hands-on experience building React applications at scale. Shipped data analytics platforms used by Tencent and MiHoYo. Specialized in TypeScript, performance optimization, and component architecture. Currently focused on full-stack development with Next.js and GraphQL.

I specialize in front-end development with React and TypeScript, but I'm also proficient with back-end technologies like Node.js and databases. I believe in writing clean, maintainable code and creating intuitive user experiences.

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Work History

Professional Experience

A showcase of my professional journey and the skills I've developed along the way.

Simpletruss Sdn Bhd

Frontend Engineer

Full-time
Jun 2024 - Present
Simpletruss Sdn Bhd•
Kuala Lumpur, Malaysia

Leading frontend architecture for a property management SaaS serving enterprise clients. Own the component library, performance optimization, and API integration layer.

ReactTypeScriptGraphQLMaterial UIGitJestStorybook
Beyondsoft (Malaysia) Sdn. Bhd.

Frontend Developer

Full-time
Jul 2023 - Jun 2024
Beyondsoft (Malaysia) Sdn. Bhd.•
Kuala Lumpur, Malaysia

Shipped data analytics features for Tencent's gaming division. Owned frontend modules consumed by game studios including MiHoYo (Genshin Impact). Drove cross-browser performance and enforced code quality standards.

ReactReduxWebpackMySQLGraphQLJestGitDockerCI/CDTypeScriptGo
Finexus International Sdn. Bhd.

Java Software Engineer (Internship)

Internship
Feb 2023 - Jul 2023
Finexus International Sdn. Bhd.•
Kuala Lumpur, Malaysia

Enhanced fintech Java applications with new features and comprehensive test coverage. Streamlined deployment workflows and resolved critical production issues.

JavaFirebaseOracle SQLXMLServletsJavaServer Pages (JSP)TomcatLinuxShell ScriptingJasperTortoiseSVNSOAP
Techtics Blockchain PLT

Software Engineer (Intern)

Internship
Oct 2020 - Jan 2021
Techtics Blockchain PLT•
Kuala Lumpur, Malaysia

Rebuilt legacy frontend in React, cutting maintenance overhead. Shipped a production blockchain dApp with MetaMask integration for secure crypto transactions.

Laravel PHPPhpMyAdminTypescriptJavascriptSolidityReactJSNodeJSExpressJSPuppeteerJSGitMetaMask
Jonvi Marketing Sdn. Bhd.

Frontend Web Developer

Full-time
Jan 2019 - May 2019
Jonvi Marketing Sdn. Bhd.•
Kuala Lumpur, Malaysia

Shipped 2 production web applications and automated manual data workflows, saving 10+ hours weekly on repetitive tasks.

HTMLCSSJavaScriptPhpPythonMySQLGitNodeJSBootstrapPostman API
Academic Journey

Education & Certifications

My academic journey and continuous learning path that has shaped my professional skills.

Bachelor of Software Engineering (Honours)

Tunku Abdul Rahman University of Management and Technology
Kuala Lumpur, Malaysia
Jun 2021 - Jul 2023

Taken core courses for software development such as Data Structure and Algorithm in Java, Human-Computer Interaction, Graphics Programming, Distributed System and Parallel Computing. Exposed to technologies such as Mobile App Development, Blockchain App Development, Data Science through elective courses.

Achievements & Honors

  • Dean's List
Tunku Abdul Rahman University of Management and Technology
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Diploma in Computer Science

Tunku Abdul Rahman University of Management and Technology
Kuala Lumpur, Malaysia
May 2019 - May 2021

Basic Programming Concepts through various languages such as Object-Oriented Programming in Java, C, and Assembly Language. Mathematics courses included Algebra, Calculus, Statistics, Discrete Math.

Tunku Abdul Rahman University of Management and Technology

Featured Projects

Here are some projects I've worked on that showcase my skills and approach to problem-solving.

Project Preview
Focusing
Availability Scheduling Platform (Zync)
Built to eliminate the 30+ minute back-and-forth of scheduling meetings. Architected a real-time availability sync system using Supabase subscriptions, with Stripe integration for premium tier monetization. Targeting 50% reduction in scheduling friction.
React.jsNest.jsSupabase+3
Personal Website
Maintaining
Personal Website
Engineered a performant portfolio with Next.js App Router, MDX blog support, and ISR for optimal SEO. Achieved 95+ Lighthouse scores across all metrics. Features dynamic OG images and structured data for search visibility.
Next.jsTailwindCSSShadcn+1
CodeDemo
Tuition Management System (PTIB)
In Progress
Tuition Management System (PTIB)
Digitized operations for a tuition center managing 200+ students on spreadsheets. Built role-based access for admin/teachers/parents, automated recurring billing with Stripe, and real-time attendance tracking. Reduced admin workload by eliminating manual invoicing.
Next.jsTailwindCSSSupabase+4
Demo
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Skills & Expertise

Technologies and tools I've mastered throughout my professional journey.

TypeScript90%
Next.js (React)90%
Gin (Go)80%
Git80%
Flutter70%

Let's Connect

Interested in working together or have questions? Feel free to reach out!