gnstudioContact

KC Yang 양광철

Founder, gnstudio

I studied computer science and statistics at university and started as a developer in Seoul in 2000.

In the more than 25 years since, I have worked in seven organizations and six countries.

I have always chosen to listen to requirements on site, build the system myself, and stay until it runs.

Where I've worked

From university to today, six countries

Baengnokdam, the crater lake on Hallasan
Baengnokdam, the crater lake on Hallasan

Jeju

–2000

Jeju National University, Computer Science and Statistics

Seoul

2000–

Started as a developer and project manager; after Germany, a Dynamics NAV and automotive DMS consultant; gnstudio since 2025

The machine hall of Zeche Zollern colliery, Dortmund, in the Ruhr
The machine hall of Zeche Zollern colliery, Dortmund, in the Ruhr

Marl, Germany

2007–2012

ERP/IT Manager at Sonoace GmbH. Ran ERP and IT for Samsung Medison's European subsidiaries for four and a half years

A Rotterdam street, 1960
A Rotterdam street, 1960

Germany · Netherlands · France

2006–2007

Project leader for the Navision 4 implementation at Medison's European subsidiaries. Data migration, stabilization, user training

The carriage gallery of Milano Centrale, 1930s
The carriage gallery of Milano Centrale, 1930s

Italy

2011

Project leader for the warehouse management system at Samsung Medison Italy

The rail yard at Tanjung Priok harbor (KITLV archive)
The rail yard at Tanjung Priok harbor (KITLV archive)

Jakarta

2023–2025

Lead consultant, incadea DMS implementation for Inchcape Indonesia

Santa Cruz, Binondo, Manila
Santa Cruz, Binondo, Manila

Manila

2023–2025

Lead consultant, incadea DMS implementation for Inchcape Philippines

Career

Since 2000, most recent first

Independent

gnstudio
2025.03–
Founder
ERP–LLM integration for a fragrance manufacturer: I planned, designed and built a system that connects Dynamics NAV and MSSQL to LangChain and Chainlit so that ERP data can be queried in plain language. It is used in daily work. I also built a real-estate listing manager.

Consulting

incadea Korea
2023.02–2025.03
Lead consultant
incadea DMS implementation for the Inchcape subsidiaries in Indonesia and the Philippines. Requirements analysis, DMS configuration, data migration, integration with manufacturer systems and go-live support.
2H Consulting
2019.07–2023.02
Dynamics NAV technical and functional consultant
Built an electronic tax-invoice extension integrated with the Popbill API and deployed it at client sites. Also upgraded the Dynamics NAV system of Guerbet's Japanese subsidiary (including a Citibank XML integration module) and built a Business Central QC extension app for a fragrance manufacturer.
DEEX Korea
2018.04–2019.07
Business Central product manager
R&D manager for Business Central products and applications. Also handled Dynamics ERP/CRM marketing and Azure, and prepared the next-generation ERP (Dynamics NAV) proposal for Yongin Park.
incadea Korea (formerly BSE Consulting)
2013.08–2017.12
Dynamics NAV developer and consultant / R&D
incadea acquired BSE Consulting during this period; I stayed through the acquisition and the name change. Dynamics NAV development, consulting and R&D, plus Azure consulting. Planned, designed, built and published a VAT return system for Dynamics NAV (Node.js, Angular.js, MongoDB). Lead consultant on the Audi Volkswagen Korea DMS upgrade and the Webon Motors Bundang branch DMS rollout; head of the Audi Volkswagen Korea DMS support team.

Germany

Sonoace GmbH (Marl, Germany)
2007.12–2012.06
ERP/IT Manager
Responsible for ERP (Dynamics NAV), R&D and IT operations at Samsung Medison's European subsidiaries. Process management and improvement, financial and sales reporting to headquarters (financial statements, receivables and payables, inventory, sales), first-line C/AL and MSSQL maintenance and T-SQL procedures, and development of a .NET/MSSQL service-order site (MediNet) and a web reporting site. Project leader for the warehouse management system at the Italian subsidiary (2011), ERP improvements across the European subsidiaries (2010) and the BizTalk interface between headquarters and the subsidiaries (2007–2008).

Development

ISTech
2000.08–2007.11
Developer · project manager
Seconded to Medison in 2005–2007: system administrator for the EKP/KMS knowledge-management task force (ASP, MS-SQL), then project leader for the Navision 4 ERP implementation at the German, Dutch and French subsidiaries (C/AL, data migration, stabilization, user training). 2000–2005: project manager for the Kia Motors dealer sales-information system (Java, JSP, Oracle, DB2, 2004) and the Kia Sohari plant production work-order system (2004), project lead for the Hyundai Motor dealer sales-information system (2003), the Cheongju Office of Education EduNet (Java, 2005), the NICE Information card and bank file-transfer system (Tandem C and C++, 2002–2003), LG Capital web EDI (2002), a host-to-web migration of COBOL applications (2001–2002), the INI Steel business-trip system (2001), a RightFax fax-server installation and a CTI call-center demo (2000).

Jeju National University, Computer Science and Statistics
Korean · English (working, limited) · German (basic)

Skills

ERP
  • Microsoft Dynamics NAV
  • Business Central
  • C/AL
  • AL
  • incadea DMS
Data
  • MSSQL
  • T-SQL
AI
  • Python
  • LangChain
  • Chainlit
Development · Cloud
  • Node.js
  • .NET
  • Java
  • Azure
Languages
  • Korean: native
  • English: working, limited
  • German: basic (four and a half years working in Germany)
Open source

Tell me what
you're stuck on

Two or three lines are enough: which system you use and where it is stuck. I reply personally with whether I can help and how we would proceed.

You can also write straight to kcyang@gnstudioo.com.