Previously built data platforms at Tencent scale

Hi, I'm Kelvin You

I ship 35% faster loads and 500K-row dashboards — from Tencent-scale analytics to SaaS products generating real revenue.

0+Years Exp.
0+Projects
0M+Products' Users

About Me

Learn more about my journey and what drives me as a developer

About Me
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Companies

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Faster Loads

0K+

Rows at 60fps

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Technologies

Engineer Who Ships

Frontend Engineer who ships fast without breaking things. Built dashboards serving 1M+ users at Tencent/MiHoYo scale.

Currently Building

Full-stack SaaS with Next.js + Supabase. Exploring AI-assisted development, cloud architecture, and data-driven product thinking.

0-to-1 startups + enterprise experience. Knows when to move fast and when to architect for growth.
Specializing in performance (35% faster loads), architecture (GraphQL layers), and scale (500K-row tables at 60fps).
ReactTypeScriptNext.jsGraphQLNode.jsPostgreSQL
Shipped for:
SimpletrussBeyondsoft (Tencent)FinexusTechtics

Experience

Building products at scale. From Tencent's millions to startup MVPs.

DTCPay (FinTech)

Frontend Engineer

DTCPay (FinTech)·Kuala Lumpur, Malaysia
Full-timeJul 2025 - Present

Building agentic dev tools and LLM-powered workflows on a production fintech payment platform. Claude API + MCP-based agents, plus React JS→TS architecture migration.

  • Built agentic test generation pipeline at fintech production scale: LLM-powered Playwright spec generator + auto-debug loop. Stack: Claude API + custom MCP tools + Playwright. Adopted by full team within [N] weeks.
  • Designed multi-agent PRD/Figma reconciliation system that flags spec conflicts pre-development and auto-applies fixes to codebase via structured tool calls.
  • Authored team-wide Claude rules + agent harness conventions, codifying prompt patterns and tool schemas across [N] internal AI workflows.
  • Frontend architecture overhaul: React JS→TS migration, ESLint setup, folder structure rewrite — supporting agent-assisted code generation downstream.
LLM IntegrationClaude APIMCP (Model Context Protocol)Agentic AIPrompt EngineeringMulti-agent SystemsPlaywrightTypeScript
Simpletruss

Frontend Engineer

Simpletruss·Kuala Lumpur, Malaysia
Full-timeJun 2024 - Jul 2025

Building enterprise property management SaaS. 500+ properties, 10K+ maintenance tickets monthly.

  • Component library with compound patterns, TypeScript generics, Storybook docs. 40% faster dev velocity, 60KB bundle reduction.
  • GraphQL layer: Apollo Client, 80% cache hit rate, custom hooks (usePaginatedQuery, useOptimisticMutation). Type-safe, zero prop-drilling.
  • Performance: Code splitting, virtualization for 10K+ rows, Zustand over Redux. 35% faster initial loads.
ReactTypeScriptGraphQLApollo ClientZustandMaterial UIStorybook

Key Projects

LessenPro

Scheduling engine, vendor coordination, maintenance tracking. 500+ properties managed.

ReactTypeScriptGraphQLMaterial UIApollo Client
Beyondsoft (Tencent)

Frontend Developer

Beyondsoft (Tencent)·Kuala Lumpur, Malaysia
Full-timeJul 2023 - Jun 2024

Analytics platform for Tencent, MiHoYo (Genshin Impact), major game studios. Millions of events/day.

  • Performance: Virtual scrolling (500K rows), Web Workers for parsing, debounced filters. Sub-3s loads at 60fps.
  • Quality: Jest standards, mandatory reviews, 40% fewer production bugs. Docker dev env: 4h → 30min onboarding.
  • Cross-team: Specs with Tencent engineers, cross-browser (Safari, IE11), China CDN optimization.
ReactTypeScriptReduxAnt DesignJestDockerWebpackGo

Key Projects

Databrain Global

Real-time player analytics. 100K+ row datasets, complex filters, interactive dashboards.

ReactUmi.jsAnt DesignTypeScriptGo
Finexus (Fintech)

Java Engineer Intern

Finexus (Fintech)·Kuala Lumpur, Malaysia
InternshipFeb 2023 - Jul 2023

First exposure to fintech production payment systems — legacy Java/JSP monolith, thousands of daily transactions. Foundation for current fintech work at dtcpay.

  • Fixed connection pool bug causing peak-hour failures. HikariCP + JMX monitoring → 99.9% uptime.
  • Deployment automation: Bash scripts for Tomcat WAR deploys. 4h → 2h per release.
  • Jasper Reports: Query optimization, indexing. 8s → 1.2s report generation.
JavaOracle SQLServletsJSPTomcatShell ScriptingJasper Reports
Techtics (Web3)

Blockchain Engineer Intern

Techtics (Web3)·Kuala Lumpur, Malaysia
InternshipOct 2020 - Jan 2021

Ethereum dApp during 2020 DeFi boom. Smart contracts, gas optimization, MetaMask.

  • Solidity contracts: Reentrancy guards, gas estimation UI, MetaMask signing. Deployed to mainnet.
  • Gas optimization: IPFS storage, batched transactions. 65K → 38K gas (40% savings).
  • jQuery → React: 5K lines → 40 components, Redux state. 60% fewer bugs.
ReactTypeScriptSolidityMetaMaskNode.jsExpressRedux

Education

My academic journey in computer science and software engineering.

Bachelor of Software Engineering (Honours)

Tunku Abdul Rahman University of Management and TechnologyKuala Lumpur, MalaysiaJun 2021 - Jul 2023

Specialized in distributed systems, parallel computing, and performance optimization. Built 15+ projects ranging from blockchain dApps to mobile applications. Core coursework: Data Structures & Algorithms (Java), Distributed Systems, Parallel Computing, Human-Computer Interaction, Graphics Programming. Electives: Mobile Development (Flutter), Blockchain Development (Solidity), Data Science (Python).

Achievements & Honors

  • Dean's List (Top 10% - GPA: 3.72/4.0)
  • Final Year Project: Travel Guide App presented to 50+ industry professionals
  • Secured Databrain Global (Beyondsoft) internship through university recommendation
  • Led student team of 4 for final year capstone project
Tunku Abdul Rahman University of Management and TechnologyView certificate

Diploma in Computer Science

Tunku Abdul Rahman University of Management and TechnologyKuala Lumpur, MalaysiaMay 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

Projects

A collection of projects I've built and contributed to.

Project Preview
In Progress

Personal-OS — Multi-Agent Personal Operating System

Production agentic system built on Claude Code skill architecture + MCP servers (Figma, Google Calendar). Custom agents: weekly-review (data-driven self-management with circuit breakers), wealth-manager (portfolio analysis across MY/SG/US markets), learning-agent (job-market scraping + skill-radar synthesis), profile-optimizer (LLM-driven LinkedIn/resume optimization), coach-planner (real-time decision support and timetable scheduling). Demonstrates production agent design: tool schemas, prompt rules, structured outputs, hot-reloadable skill registry, multi-source data orchestration.

Claude CodeMCPLLM Integration+4
PTIB - Tuition Center Management SaaS
In Progress

PTIB - Tuition Center Management SaaS

Multi-tenant SaaS digitizing a 200-student tuition center. Role-based portals, Stripe billing, QR attendance, row-level security in Supabase. Saved 5 hrs/week, $500 MRR from 3 pilot centers.

Next.jsTailwindCSSSupabase+4
Demo
Project Preview
Focusing

Zync - Meeting Scheduling SaaS

Real-time meeting scheduling SaaS (Calendly + Doodle reimagined). Architecting sync engine for 1000+ concurrent users with Supabase subscriptions. Stripe recurring billing, sub-200ms availability checks via PostgreSQL optimization and Redis caching.

React.jsNest.jsSupabase+4
See All Projects

Let's Connect

Interested in working together? Feel free to reach out!