SJD

Lead Systems Engineer

IT Management
• Carried out numerous project management for company-wide server virtualization project, company-wide wireless deployment project, etc.
• Developed company-wide standards for OS configurations, user permissions, network security, IE, MS Office, etc. Implemented and enforced standards using group policy and scripting.
• Created acceptable use policies for internet, computers, wireless, and other technical assets.

Systems Engineering
• Designed and implemented new corporate Active Directory domain infrastructure to centrally manage 500+ clients and servers.
• Designed and implemented redundant corporate DNS, DHCP, and NTP infrastructures.
• Designed and implemented Linux-based monitoring infrastructure to monitor network services, system logs, and server resources.
• Deployed linux-based virtualized firewall to isolate production, protected, and DMZ networks.
• Deployed linux-based virtualized proxy server to control internet access for security and compliance purposes.
• Deployed WSUS Windows update management infrastructure and testing environment.

Development / Automation
• Developed application to manage overseas product orders/inventory, and make sales projections.
• Developed application to streamline production line scheduling and staffing.
• Developed a system to automatically scan for installed software on client PC's and detect software changes.
• Developed program to automatically detect unauthorized devices on the corporate network.
• Designed and implemented corporate English language website. Translated brand and corporate information into English.
• Developed program to automatically record sales and inventory data.
• Developed company-wide logging system to automatically record where/when network resources are accessed by users.
• Developed and deployed system to uniformly install software, such as Adobe Reader, Adobe Flash, Java Framework, etc. on client PC's.
• Developed programs to automate Windows update approval/testing and maintenance of Active Directory objects.

Technologies used:
• Languages: VB, VB Script, Powershell, Java, PHP, Perl, Bash, Regex, HTML/CSS, XML, Javascript, R
• OSes: Linux (Ubuntu, CentOS, OpenBSD), Windows Server, vMware (ESX, ESXi, VC)
• Apps/Platforms: Active Directory, Group Policy, WSUS, Apache, IIS, MySQL, PostgreSQL, SQL Server, Shorewall/IP Tables, Nagios, Squid
• Network services: DNS, DHCP, FTP, HTTP(S), NTP, POP3, SMTP, SNMP, SSH
• Networking protocols: TCP/IP, VLAN, ARP, STP, OSPF, VTP, IPSEC

Systems Engineer

Managed IT infrastructures for Walt Disney's ABC Television business unit.

System Engineering
• Designed, installed, configured, and optimized aplications, servers, and network equipment to achieve high availability, scalability, security, and performance.
• Implemented monitoring to improve up-time.

Development / Automation
• Created scripts and tools to automate and simplify work tasks.
• Created a program to automatically record server configuration data in a database.

Technologies used:
• Windows Server 2003, IIS, SQL Server, VB, VBscript, HTML/CSS, Access, load balancers, network firewalls, network switches, SiteScope, Cacti

Researcher

• Wrote scripts and modules using the R programing language to recursively analyze data and make graphical charts. Click for details.