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Leo Zhadanovsky

OBJECTIVE

EXPERIENCE

• Administering workstations running Red Hat Enterprise Linux 4 & 5, CentOS 4 & 5, Fedora 7, 8, 9 & 10, Windows XP, OS X 10.3, 10.4 & 10.5, Solaris 9 & 10 and Ubuntu Linux
• Maintaining high traffic department web server running Apache 2, email servers running Postfix and Sendmail
• Provide technical support to faculty, staff and students of Astronomy Department and KICP
• Monitor workstations and servers using custom-configured Nagios monitoring system
• Migrating servers running Solaris 7 to CentOS 5, including porting configuration of mail, web, print and nfs services
• Perform data recovery on crashed systems
• Configured Cacti to monitor server bandwidth usage and graph server performance statistics
• Consult faculty and staff on purchases of servers, workstations and other hardware and software
• Created an automatic network install environment for Red Hat, CentOS and Fedora workstations and server using PXE, NFS install mounts and kickstart
• Created RPM repository containing various astronomy software used by the department
• Configured departmental Wiki using MediaWiki software
• Installed and configured application server which runs websites and wikis (using MoinMoin) for students
• Administer and maintain websites for Astronomy Department clients and partners

• Performed network installation of servers running CentOS 5
• 24/7 support of all company servers and network
• Configured memcached, NFS, lighttpd, & postfix on mission-critical servers
• Installed a Nagios monitoring system to ensure uptime and monitor connectivity of servers between multiple data centers
• Configured HP ProCurve switches and APC PDUs to be monitored by Cacti
• Installed and configured centralized logging on servers using syslog-ng and mySQL
• Custom-Compiled ffmpeg and mencoder tools that were used for high-speed conversion and transcoding of video files
• Packaged software using RPM to allow for quick deployment to all servers on company network

• Managed high-traffic CentOS, Rawhide, Fedora Core, Ubuntu and Solaris patch local mirrors
• Built packages for Rutgers Solaris 9 and Linux mission-critical systems, which have over 68,000 user accounts
• Beta-tested NAGIOS monitoring system, which is used for over 400 machines
• Configured kickstart and cfengine on CentOS and Solaris servers
• Integrated Rutgers’ systems and software with OpenLDAP servers for authentication and directory information
• Wrote a program that uses Simple Event Correlator and Cyclades console servers to process system logs and alert system administrators on key events
• Trained new student employees in RPM package building and other job related tasks
• Contributed to the following open source projects: bmp, Nagios, nano, nmap, squirrelmail, taglib, unrealircd, wireshark, xfce

• Ran Compaq ProLiant and Dell servers used for the school web site and system monitoring
• Installed and maintained intrusion detection system that used Snort, BASE, ntop and OSSIM
• Supported computer labs running Windows 2000 & Windows XP
• Created and maintained system images (using Norton Ghost) for computer lab systems
• Provided technical support to school district staff

EDUCATION

Rutgers University, New Brunswick, NJ

Major GPA: 3.7/4.0

SKILLS

Hardware

• Sun servers and workstations: Ultra 5, Ultra 10, Blade 100, Blade 150, Enterprise 450, Sun Fire X4100, Netra X1, Dell servers and workstations: PowerEdge 1650, PowerEdge 2650, various Inspiron laptops, various Dimension, OptiPlex and Precision desktops, Cyclades console servers, Compaq ProLiant servers, IBM ThinkPads, General PC and Mac desktops
• Operating Systems: Red Hat Enterprise Linux 4 & 5, Gentoo, Ubuntu, CentOS, Fedora, Debian, FreeBSD, Solaris 7, 8, 9, 10, Windows: 95, 98, NT, 2000, XP, Vista, OS X 10.3, 10.4, 10.5
• Servers: apache, lighttpd, IIS, BIND, postfix, amavisd-new, spamassassin, sendmail, unrealircd, openssh, courier-imap, teapop, mysql, postgresql, ntp, nagios, openfire, nfs, mailman, red5, memcached

Software

• Operating Systems: Red Hat Enterprise Linux 4 & 5, Gentoo, Ubuntu, CentOS, Fedora, Debian, FreeBSD, Solaris 7, 8, 9, 10, Windows: 95, 98, NT, 2000, XP, Vista, OS X 10.3, 10.4, 10.5
• Servers: apache, lighttpd, IIS, BIND, postfix, amavisd-new, spamassassin, sendmail, unrealircd, openssh, courier-imap, teapop, mysql, postgresql, ntp, nagios, openfire, nfs, mailman, red5, memcached