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About Me

My name is Lam Jung Yu (林震宇), Chris. I am a first class honors graduate of Computer Studies (BsCS) at City University of Hong Kong. I am currently studying for a MSc degree in Computer Science at the University of Hong Kong.

Since 2005, I have setup my own business, Global Voyage Technology (GVT), which specializes on web hosting and related services. On the other hand, I own several web sites, including the innovative and the world famous (serving customers from over 50 countries, 6 continents around the world).

Being a Microsoft Certified Trainer, I have been teaching IT courses at Welkin System Ltd during my spare time. If you are a student of mine, you may find my custom-made teaching materials here.

Professional Qualifications

Honors and Awards

40th WorldSkills Competition (2009) HK Delegate

I am honoured to be the Hong Kong delegate of the 40th WorldSkills Competition in the IT/Software Applications trade. I was ranked the 13th worldwide. You may also want to read the Press Releases about my experience.

Other Honors and Awards

Other than representing HK to participate in the 40th WorldSkills Competition, I have been lucky enough to receive quite a number of awards. You may find out more at the Awards Page.


2010 Summer - Agriculture, Fisheries and Conservation Department


2009 Summer - IBM China/Hong Kong Ltd

Prove of concept on DB2 High Availability Disaster Recovery & Automatic Client Reroute. Project involvement of BOCOM Mobile Banking System.

2007 Summer - Transport Department

Design and develop a file sharing system for the staff in the Transport Department.

My Specialties

First Freelance Job

I specilize in web development and programming. I got my first freelance job right after HKCEE in 2004. My responsibility was to code an online affiliate system and integrate it into an existing online shop for a DVD vendor. Since then, I have finished quite a lot of freelance projects such as web design, online shop (aka E-shopping Cart), web service and backend system, stocking system, etc.


PHP and Python I love programming so much. Python and PHP are my beloved programming languages, meanwhile the sexy jQuery has made me fall in love with JavaScript. Actually I can write C/C++, C#, Java, VB, ASP.NET, Ruby, Perl, Bash, SQL, and PL/SQL as well.

MySQL and PostgreSQL Information systems always need to store their data in DBMS (DataBase Management System). So far I have played with various DBMS such as MySQL, PostgreSQL, SQLite, Access, and Oracle along with my previous projects.

System Administration

Linux/Unix I also know how to manage and maintain a Linux/Unix server, and a little bit networking. Other than my favourite Linux distros, CentOS and Debian, I have solid experiences in FreeBSD, Fedora, and Redhat Enterprise. Unfortunately, I only have very limited experiences on Windows Server.