Resume

Submitted by jmarki on 21 January 2007 - 8:39pm

Name: Koo Jun Hao
Email: junhao82 deleteThis (at) jmarki dot net

Professional Objective

To constantly upgrade my skills so that I am able to administrate an IT infrastructure
securely and effectively.

Education

Aug 2003 – July 2007: B. Sc. Computational Science (Physics), National University of Singapore

Jan 1999 – Dec 2000: GCE 'A' Levels, Tampines Junior College

Jan 1995 – Dec 1998: GCE 'O' Levels, Anglican High School

Professional Experience

July 2007 – Present: Bioinformatics Network Analyst, National Cancer Centre Singapore

Major Responsibilities:
  1. Revamp IT infrastructure to increase security, user accountability and streamline user workflow
  2. Document infrastructure deployment and track issues/changes
  3. Day to day monitoring and maintenance of file servers, storage systems, email servers, application servers, and backend infrastructure servers
  4. Centralised system monitoring, configuration and deployment using mainly open source tools
  5. Periodic backups of research data and user directories
Project Details:
    July 2007 – Present:

  1. Design, procure, deploy, troubleshoot, and maintain IT infrastructure under a research laboratory
    • Apache web server for Trac wiki documentation and issue tracking
    • Nagios infrastructure monitoring on RHEL5, Solaris 10 and Windows 2003 applications and servers
    • Puppet centralised configuration management on Solaris 10 and RHEL5 servers
    • Kickstart and Jumpstart centralised installation system
    • Local mirroring of updates and packages for RHEL 5 and Solaris 10
    • Vmware Server virtualisation as testing environments
    • Document infrastructure set up and changes
  2. Design, procure, deploy, troubleshoot, and maintain data storage infrastructure under a research laboratory
    • 15 Terabytes SAN on Solaris ZFS for storing research data
    • Active-Passive Samba file servers for file sharing of research data and user directories over Microsoft Active Directory environment
    • Active-Passive NFSv3 file servers for file sharing over Unix environment
    • Active-Passive Netvault disk-to-disk-to-tape backup servers for backing up research data and user directories
  3. Design, deploy, troubleshoot, and maintain email infrastructure under a research laboratory
    • 25 users Zimbra primary email infrastructure
    • Postfix secondary email server
    • BIND 9 DNS servers
    • Linux firewall for DMZ security
  4. Various improvements to streamline/facilitate user workflow
    • Windows 2003 application servers to share common applications through Terminal Services
    • Google Apps for calendaring and intranet
    • Preliminary desktop support to resolve simple problems.
    July 2008 – December 2008:(collaboration between Duke-NUS Graduate Medical School Singapore and National Cancer Centre Singapore)

  1. Design, and propose new High Performance Computing Cluster for computational biology research
    • 20 compute nodes RHEL general purpose cluster
    • Platform LSF scheduler
    • 10GE cluster network interconnect
    • Suitable for common computational biology applications like Maq, Plinks, Blast, etc
  2. Design, and propose new data storage system for High Performance Computing Cluster
    • 30 Terabytes high performance NAS for data file sharing and user drectories
    • 30 Terabytes offsite disk-to-disk backups
    May 2009 – Present:

  1. Plan and execute research laboratory relocation to Duke-NUS Graduate Medical School
    • Migrate users to new Duke-NUS environment
    • Negotiate VPN remote connections back to National Cancer Centre Singapore
    • Migrate research data to Duke-NUS infrastructure
    • Handover infrastructure at National Cancer Centre Singapore to new team

August 2005 – June 2007:System AdministratorlinuxNUS

Major Responsibilities
  1. Set up, administer and maintain web server hosting Opensource @ NUS
  2. Maintain applications on shared hosting servers for linuxNUS website
  3. Set up and maintain test servers
  4. Troubleshoot systems during events
  5. User support on mailing lists, etc

Other Project Experience

August 2005 – May 2006:Vice-President, linuxNUS

Major Accomplishments
  1. Founding member of linuxNUS
  2. Organise outreach events to advocate Linux/FOSS to NUS students: Software Freedom Day 2005, Opensource Day 2006, monthly meetups, awareness talks.

August 2004 – August 2005: Vice-President, NUS Computational Science Society
August 2005 &nash; August 2007: President, NUS Computational Science Society

Major Accomplishments
  1. Organise regular society gatherings for members
  2. Organise field trips to research institutes
  3. Participate in departmental Open Houses
  4. Spokesperson for students to school management and vice-versa

Interests

Linux/Unix system administration, System security, Virtualization, Storage, Networks

Professional Community

linuxNUS, Executive Committee Alumni Member (August 2007 – Present)