Michael Calizo

Michael Calizo

Objective

I am seeking a hands-on Linux System Administrator or System Engineer, thus allowing me to utilize my strategic and technical expertise in the Information Technology field under either Microsoft and/or UNIX/Linux infrastructures.Well-rounded and highly experienced individual with backgrounds in enterprise architecture, system administration/engineering and application design and integration. Creative problem solver with ability to work either individually or through multiple teams partners for accomplishing goals.

Summary

Career Summary:

Extensive experience in operation management, project management, service on-boarding, and managing support for multiple infrastructure platforms. With experienced working in Philippines, Malaysia, Japan, USA and Asia Pacific in different line of industry covering both end users and vendor sector.

Certifications:

RedHat Certified Engineer (RHEL 5)                  805010675045927

NCLP (Suse Enterprise Linux 10)                        10098202

ITIL v3 Foundation                                            261395-16658

Work History

Work History
Jul 2008 - Present

Linux/Unix Engineer

T-Systems

● Provides 24x7 proactive and reactive support for Linux/UNIX servers, clusters, desktops as well as legacy servers Sun, IBM, HP and desktops Shell's businesses globally, performance as the agreed Service Level AgreementAdheres to the standard end-to-end processes (Change Management, Incident Management, Problem Management, Configuration, Asset Management, Service Interruption Process and compliance with internal security models).Maintain a high level of knowledge on Shell's Trust Domain and SOx security baselines and how to implement them on the operating systems supported based on documented procedures.

● Handles problem tickets. Analyzed and resolved the issue by giving permanent solution to the existing problem. Assignedas Subject matter expert for High performance Computing (Cluster).

● Assignedas Subject matter expert for Redhat Network Satellite.

● Assignedas Subject matter expert for Oracle RAC deployment and maintenance.

● Assignedas subject matter expert for Veritas Cluster deployment.

● Attends to customer requests via Shell Request Center. This includes unix account management and server capacity management.

● Assigned as amember of UNIX patching team focused on Solaris servers and Linux Servers.

● Manage Systems backup by troubleshooting failed scheduled backup.

● Communicates with customers and vendors to resolve the issue faster as possible.

● Manage servers disk capacity both on Solaris, AIX, HP-UX and Linux platform.

Jan 2007 - Jul 2008

System Engineer

Shell IT International

Application Hosting delivers a portfolio of managed IT Infrastructure Services, which provide end-user functionality or platforms for business applications, this includes global enterprise applications and regional or local applications running on large mainframes and mid-sized servers.

Responsibility:

● Provides 24x7 proactive and reactive support for Linux/UNIX servers, clusters, desktops as well as legacy servers Sun, IBM, HP and desktops Shell's businesses globally, performance as the agreed Service Level AgreementAdheres to the standard end-to-end processes (Change Management, Incident Management, Problem Management, Configuration, Asset Management, Service Interruption Process and compliance with internal security models).Maintain a high level of knowledge on Shell's Trust Domain and SOx security baselines and how to implement them on the operating systems supported based on documented procedures.

● Handles problem tickets. Analyzed and resolved the issue by giving permanent solution to the existing problem. Assignedas Subject matter expert for High performance Computing (Cluster).

● Assignedas Subject matter expert for Redhat Network Satellite.

● Assignedas Subject matter expert for Oracle RAC deployment and maintenance.

● Assignedas subject matter expert for Veritas Cluster deployment.

● Attends to customer requests via Shell Request Center. This includes unix account management and server capacity management.

● Assigned as amember of UNIX patching team focused on Solaris servers and Linux Servers.

● Manage Systems backup by troubleshooting failed scheduled backup.

● Communicates with customers and vendors to resolve the issue faster as possible.

● Manage servers disk capacity both on Solaris, AIX, HP-UX and Linux platform.

Feb 2004 - Mar 2007

System Engineer/Administrator

Chikka Asia, Inc.

● In charge in system side configuration of the new project which involve website deployment using apache and lighthttpd.

● Maintain and implement the company code repository using Samba as file server, MS active directory for authentication and tortoise versioning system as a client.

● Setup and maintain the NOC and Systems ticketing system using RT(open source Request Tracker).

● Respond to the trouble tickets and observe the NOC internal SLA via RT.

● Implement and maintain the storage area network (SAN) for automatic backup of important files and application logs using openfiler SAN/NAS operating system for easier and centralized backup system of the company.

● Maintain server security by administering firewalls, routers and monitoring servers iptables firewall.

● Monitors server status on a daily basis by checking server health, database performance by using network monitoring tools like nagios, mrtg and cacti.

● Responsible in server installations (both Linux base, Unix base and Windows base server), for production and development server deployments.

● Participate in application development by providing testing environment for each application.

● In charge in server selection for new application deployment by choosing the right server to prevent future problem that involves hardware, software and bandwidth related trouble.

● Do the system backup and recovery by maintaining backups of DNS server, mail server(Postfix and Courier), dialup, Samba file server, Active Directory and windows file server.

● Also conduct meetings on providing updates on the current network status and planned modifications with regards to improving the performance of the company's enterprise network setup.

● Carry out research on further improving the network performance to accommodate the fast growing network load of the company enterprise network by finding ways on maximizing the existing network resources, including R&D of the new technology to find out possible application for company implementation.  

Jan 2001 - Dec 2003

Senior System Administrator

Bureau of Internal Revenue

Responsible in maintaining 24/7 BIND Servers (Internal and External) on RH 9 / DJBDNS on Opendsd, WINS, DHCP Servers using RH9, Apache, Squid proxy Servers, Web Server, Ftp Server. Administer Checkpoint Firewall, Stonegate Firewall. Setup and maintains BIR Proxy Server, SNORT IDS system, Dansguard Content filtering system and Nagios Network monitoring tool. Maintains heterogeneous OS platforms, such as Windows XP, Windows ME, Windows 2000, Windows NT, Windows 98, Windows 95, Red Hat Linux, Mandrake, Gentoo, Slackware, Sun Solaris, and Openbsd. Troubleshoot ad-hoc network problems. Liaise with Telecom and Internet provider for the connection of BIR on the Internet.

Network Consultant and Technical Coordinator (BIR contact Center)

November 2003 – Dec. 31, 2004

Provide overall Technical Support for BIR contact Center as an overall technical coordinator. Includes maintenance of Cosmocom software, VoIP router, Knowledge base server, Windows DNS and DHCP server, Active Directory and all network infrastructures’ concerned. Monitor Network and systems activity using SNORT for any possible intrusion and problem that may occur. Setup and maintains linux firewall, for MS exchange Server.

Jan 2001 - Dec 2002

System Support Engineer

Philippine Veterans Bank

Received and resolved computer hardware and software complaint/s Provides technical support on computer network designed and implementation. Installed, set-up, configured, and maintained Local Area Network and Wide Area Network under WINDOWS NT4 and LINUX

Education

Education
1994 - 1999

Adamson University

Certifications

Certifications

Network Security

BrainBench

ITIL v.3 Foundation

EXIN/Quint

Linux Technical Specialist

Novell

NCLP (Suse Enterprise Linux 10)

Novell