Open for projects · 合作BASE: Malaysia

Hi, I'm

Daniel Chen

Platform Engineer

Building production infrastructure, cloud security systems, and payment integrations

Most of my work sits where business-critical backend logic meets platform engineering: payment flows, reliability, security, cloud operations, and systems that need to behave correctly under pressure.

View My Work Get in Touch View Resume

roles across platform and product engineering

Payments

enterprise payment and financial-system work

Cloud

infrastructure and platform delivery

~/now

Live

Platform Engineer

Available for Work

▲ live markets

Joining CFI Financial

A global trading firm, bringing platform reliability and payments engineering to live markets.

Focus

>Payment gateways, reconciliation flows, and transactional correctness
>Platform architecture, observability, and cloud operations
>Interfaces that explain technical work clearly instead of decorating it

Featured Projects

Selected work across payments, platforms, and full-stack product delivery.

Start here for the fastest read on the systems I build.

Featuredprofessional

HKTB AI Trip Planner

Platform & DevSecOps Engineer

Full-stack AI-powered trip planning platform with 5-step questionnaire, drag-and-drop itinerary management, and admin portal for event management.

~15,000 lines of code across 150+ files
Multi-language support with 1,500+ translation keys across 3 languages

Next.js 15React 19TypeScriptTailwind CSS 4AWS Amplify Gen 2+6

Outcome

~15,000 lines of code150+ files1,500+ translation keys

Featuredprofessional

OCL Loyalty Web Application

Frontend Architect

Mobile-first loyalty program platform with missions, promotions, offers, and eStamps, featuring Ionic React components and AEM integration.

26 commits delivering 9,264 lines added in 2-week sprint
Complete missions and promotions systems with filter/sort capabilities

React 19TypeScriptIonic React 8Vite 5Capacitor 8+5

Outcome

9,264 lines added26 commits53 CSS modules

Featuredpersonal

Prop Trading Platform

Full-Stack Engineer (Freelance)

Full-stack proprietary trading platform for Southeast Asia, from challenge purchase to funded account, MT5 provisioning to profit withdrawal, all custom built.

C# microservice achieved ~175ms p50 latency vs ~443ms on legacy MT5 Web API, 2.5× faster
Single root cause, two bugs: missing ORM filter caused both a production crash and a full-table performance scan

TypeScriptNode.jsAdonisJS v5C# / .NET 7ASP.NET Core+14

Outcome

150+ API endpoints2.5× MT5 latency reduction4 payment gateways

Featuredpersonal

Service Marketplace Platform

Founder & Solo Engineer (Freelance)

Solo-architected, solo-built two-sided service marketplace for Malaysia, Go backend, Flutter mobile, Next.js web, PostGIS spatial matching, and a full escrow payment engine.

90+ REST API endpoints, 13 PostgreSQL tables, 30+ Flutter screens, 20+ Next.js pages, all solo
PostGIS spatial triggers auto-sync lat/lng → geometry columns on every insert/update, enabling native radius queries

Go 1.24PostgreSQL 16PostGIS 3.4pgx v5Redis 7+17

Outcome

90+ API endpoints30+ mobile screens3 languages

View All Projects

Skills & Technologies

Tools, languages, and infrastructure I actually use to ship.

Supporting context, not the main pitch.

01Backend Development

JavaSpring BootSpring SecurityPHPCodeIgniterNode.jsGolangRESTful APIs

02Frontend Development

TypeScriptJavaScriptReactNext.jsVue.jsHTML/CSSTailwind CSS

03Database & Data

MySQLPostgreSQLMariaDBRedisSQL OptimizationDatabase Design

04DevOps & Cloud

DockerKubernetesAWSTencent CloudNginxCI/CD

05Security & Authentication

JWTOAuth2HMAC-SHA256AES EncryptionAPI Security

06Testing & Quality

JUnitMockitoIntegration TestingPostmanUnit Testing

07Tools & Platforms

GitMavenGrafanaSentryFirebaseAWS SDK

08Specialized Skills

Payment Gateway IntegrationMulti-language SystemsSEO OptimizationPerformance OptimizationMicroservices ArchitectureSystem Monitoring