PERSONAL WORKSPACE

Projects & experiments.

A collection of web tools and interface demos. Pick a page to explore.

Built by Go Gun Hyuk

Software Engineer & Tech Lead · Singapore

Java · Spring · React · Next.js

I build reliable payments, e-commerce integrations, and backend systems.

Current role
Tech Lead, E-Commerce
Singapore Airlines · Singapore
Dec 2021 — Present
Leading global payment integrations for airline e-commerce, including Mastercard, Worldpay, Adyen, and PayNow. Delivered Altea check-in integration across customer journeys.
Previously
Software Engineer
CJ Logistics Asia Pte Ltd · Singapore
Nov 2017 — Dec 2021
Modernized warehouse and transport operations with web and mobile applications. Built service-management prototypes, EDI integrations, and Android solutions for international customer sites.

More about me

Dec 2021 — Present · Singapore

Led integration of global payment providers for airline e-commerce, spanning Mastercard, Worldpay, Adyen, Alipay+, IATAPay, and DBS PayNow.
Delivered Altea check-in integration for e-commerce flows, aligning data mapping, validation, and operational readiness.

Java · Spring Boot · Quarkus · Apache Camel · MySQL · OpenShift

Nov 2017 — Dec 2021 · Singapore

Modernized warehouse workflows with an MSA proof-of-concept and web application for WMS Web.
Built a service-management platform proof-of-concept and delivered EDI and Android solutions for international customer sites.
Shipped POD upload and mobile capabilities for transport operations through TMS Mobile.

Spring Boot · React · SQL Server · Docker Swarm · ELK · Jenkins · Vert.x · Vue.js · Redis · .NET · Android · Xamarin Forms

Sejong University · Seoul, Korea · 2010 — 2017
Bachelor of Science in Physics · GPA 3.61 / 4.5

Scholarship for Language Excellence (English)
Scholarship for Academic Excellence

Programming in HTML5, CSS, JavaScript — Microsoft (2017)
Engineer Information Processing — HRD Service of Korea (2016)
MOS 2010 Master — Microsoft (2015)
MCTS: Accessing Data with Microsoft .NET Framework 4 — Microsoft (2012)
Computer Literacy and Word Processor (Level 2) — Korea Chamber of Commerce & Industry (2003)
OPIc — ACTFL (2016, Intermediate High)
TOEIC — ETS (2016; Speaking 160/200, Listening 455/500, Reading 465/500)
Driver License — Seoul Metropolitan Police Agency (2009, Level 1)