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Senior Linux Systems Engineer Resume

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Phoenix, AZ

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OBJECTIVE

  • To obtain a Linux/UNIX Systems Engineer position with a solid and well - oriented company enabling me to utilize my skills and knowledge with the ultimate goal of building a long-lasting career through advancement.

TECHNICAL SKILLS

Operating Systems: Red Hat Enterprise Linux, RHEL 5/6/7, CentOS, SUSE Linux, Sun Solaris, FreeBSD, AIX, UNIX, MS Windows, Microsoft Windows Server

Programming: PHP, HTML5, CSS, JavaScript, Bash shell scripting, Perl, Python, vi editor, C, C++

Databases: MySQL, MariaDB, Oracle

Networking: Configure network services on UNIX Systems, LAN/WAN topology, VLANs, TCP/IP, routing, subnetting, Cisco routers and switches, Cisco CSS - HSE, Siteminder, Access control lists, NATD, MRTG, SNMP (Simple Network Management Protocol)

Systems Security: SELinux, Firewalls, firewalld, Iptables, IPFilter, Kerberos, SSH, SSL (Secure Socket Layer), OpenSSL, Secure Web Server Certificates for Apache and IBM HIS.

PROFESSIONAL EXPERIENCE

Senior Linux Systems Engineer

Confidential, phoenix AZ

Responsibilities:

  • Installation, configuration and administration of Red Hat Enterprise Linux 7 and CentOS7 as bare-metal servers and as virtual machines using KVM virtualization.
  • Installation and configuration of different Internet Services: Apache Web Server, DNS - BIND, Postfix mail server, NTP, NFS, Samba, FreeIPA Identity Management System, Puppet, Kerberos, LDAP, MySQL and MariaDB database servers, LVM and iSCSI for disk management, access through Firewall and Linux System Security & SELinux.
  • Application installation and multi-server environment / deployment, Linux architecture, deployment, administration, networking, and performance monitoring/tuning, security hardening, troubleshooting and production operations. Installation of routers, switches and required network configuration and cabling.
  • Writing shell scripts for system administration and automation tasks.

Senior LINUX/UNIX Systems administrator

Confidential, Phoenix Arizona

Responsibilities:

  • provided UNIX support for Confidential ’ SSO (Single Sign On) application. performed system administration and provided production server support on various operating systems: Solaris (8,10), Linux (5,6,7), Windows and AIX servers on both physical and virtual environments. implemented changes (CMRs) on servers for various applications in E1, E2 and E3 environments implemented OS patches and upgrades on Solaris and Red Hat Enterprise Linux servers responded on many bridge calls to provide application support and fix all the issues troubleshoot problems through Problem Management System (IMRs - ManageNow & ServiceNow) provided UNIX support and implemented changes for production applications (SSO, MYCA…) worked with Server Virtualization hypervisor VMWare ESXi for Red Hat Enterprise Linux, Solaris Virtualization Zones, Apache, IBM IHS, SAN (Storage Area Networks), Oracle databases, WebSphere, Tivoli, Veritas Cluster Server and Veritas File System, LDAP, TCP/IP, DNS, SENDMAIL, PowerBroker, Cisco CSS - HSE, F5 Load Balancer, SiteMinder, DCE/DFS, NFS, NIS+

Web Developer & UNIx Systems administrator

Confidential

Responsibilities:

  • UNIX Systems Administration (using FreeBSD and Red Hat Linux) over a very large servers farm. Web (Apache), Database (MySQL), Mail (Sendmail) and DNS (Bind) servers installation, configuration and administration.
  • Security Systems Administrator. Managerial responsibilities over a Data Center with thousands of servers and huge network layout. Supervise the Data Center staff members and Cavecreek’s systems administration team.
  • Interview job candidates and provided training for the new personnel. Monitor systems and react to high severity issues on a 24 hour 7 days a week basis. Network Administration for a huge bandwidth consumer network.
  • Security Systems Administrator Installation, configuration, troubleshooting and maintenance of all Cisco and Intel switches/routers in the Data Center. Implementation and cabling of all access layer network. Installation, configuration and administration of CCBill/Vscrub and other customers Firewalls using FreeBSD and/or OpenBSD with IPFilter and IPFirewall.
  • Kept an accurate accounting of all data center servers, switches and all equipment found at the Data Center. Designed and developed a Website to centralize all that information into a database.

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