TECHNICAL SKILLS:

Server OS: Windows Server 2003R2 - 2016, RedHat Linux, Oracle Linux, CentOS Linux, Debian Linux, Ubuntu Linux, FreeBSD Unix, Kali Linux

Microsoft: Active Directory, GPO, MDT, WSUS, System Center

Virtualization: KVM, Quemu, VMWare, XenServer, ProxMox, MS Hyper-V

Monitoring systems: Zabbix, PRTG, Incinga (Nagios), Cacti, NewRelic

Mail Server: MS Exchange 2013, Zimbra 8

Scripting: Bash, PowerShell, Python

Automation: Chef, Puppet

Containerization: Docker, OpenVZ

Web Server: Apache, Apache Tomcat, IIS, Nginx, Hadoop

Databases: MS SQL 2008R2/2012, Oracle DB 11g, MySQL, MariaDB

Networking: Ethernet 802.3, TCP/IP, DHCP, DNS, WINS, ARP, FTP, Telnet, Routers (Cisco IOS, RouterOS, Linux), NAT, VPN, VLAN, Ethernet 802.11, LAN/WAN, iSCSI, NFS, Patch Panels, Relay Racks, Proxy servers

Hardware: IBM Servers, Dell Servers, Supermicro Servers

NAS: IBM Storwize, Dell Compellent, Supermicro NAS, Netgear NAS

SIP: Asterisk 11/14, 3CX

PROFESSIONAL EXPERIENCE:

Confidential

Systems Administrator

Responsibilities:

• Installed, optimized and configured new servers and application upgrades in existing network environment as per requirements
• Implemented day-to-day tasks in RedHat Linux that include upgrading rpms, kernel, configuring SAN Disks, multipathing and LVM file system.
• Implemented monitoring systems for software and hardware
• Troubleshoot complex LAN/WAN issues
• Centralizing the logs for trouble shooting the issues
• Built Linux servers using VMWare ESX and VMWare ESXi.
• Work with the ticket system, processing tickets and keeping records in real time
• Responsible for maintenance of development tools and utilities and to maintain Bash, Python and automation scripts
• Installed and configured secured environments, VPN & VLAN Internet connectivity of virtualized server environment and clients
• Planned and implemented enterprise Anti-Virus Solutions
• Worked on SAN, NAS Storage configuration. NetBackup support for Unix and Linux systems Patching and scanning Unix and Linux servers General Unix and Linux administration support
• Maintaining maximum availability of supported services for users
• Maintained the timely back-up of important data and management resources
• Planned, implemented, and maintained a Windows domain and mix based infrastructure
• Installation, configuring and monitoring and all network services such as DHCP, DNS, DC, TCP/IP, IPX/SPX RIP, IGRP, OSPF etc.
• Did remote system administration of 150 AIX, Windows, Linux
• Documented Process and Procedures using wiki by conducting review meetings

Sr. Systems Administrator

Responsibilities:

• Built data center from scratch for IBM & Dell Servers installation
• Implement and manage ITSM-compatible open-source ticket request system (OTRS)
• Implemented and maintaining MS Exchange 2013 server as a mail server for 1400 users
• Implemented and maintain virtualization infrastructure (MS Hyper-V, KVM, ProxMox)
• Implemented and maintain Wi-Fi office network based on Ubiquiti hardware
• Implemented and maintaining Squid Proxy server for office users (600 users)
• Linux Kernel, memory upgrades and swaps area and performed Red Hat Linux kick start installations.
• As a System Administrator, supported company-wide infrastructure projects, local network installation and maintenance
• The fiber switches setting for IBM Flex System, IBM Blade System, IBM Flash Sysytem and IBM Storwize
• Designed from scratch and led migration to a new 2012 R2 domain, including migration of all users accounts, computer accounts, and Exchange mailboxes
• Implemented infrastructure for MS Dynamics AX (ERP), PLM and CRM project based on IBM Servers
• Implemented and maintaining monitoring system based on Zabbix (~160 Win & Linux servers, switches, MS SQL Cluster)
• Implemented new security protocols including forcing password standards for company users
• Designed and implement Active Directory Group Policies.
• Monitoring the progress of third-party maintenance contract suppliers
• Supported 930 total users in 120 locations nationwide, as well as corporate office users
• Implemented and maintaining SharePoint server for internal users
• Implemented the Microsoft Deployment Toolkit (MDT)
• Implemented the Windows Server Updates Services (WSUS)
• Lowered spam by 80% using firewall filtering with Barracuda spam filter and firewall
• Administer Microsoft Windows Servers (Active Directory)
• Provided DB management and ERP programming to Business Application Department
• Develop and update documentation, appraising users and administrators of vital information
• Implemented the Asterisk SIP server for 600 users as company phone and fax standard

Systems Administrator

Responsibilities:

• Built data center from scratch for Supermicro Servers installation
• Built IT infrastructure and implemented business solutions from scratch
• Designed from scratch and led migration to a new 2008 R2 domain, including migration of all users accounts and computer accounts
• Designed and implemented various solutions including the network infrastructure and security, cash register applications, shop management software
• Moved all company servers (Intel Servers, Supermicro Servers) to data center
• Improved system and network security
• Implement and manage ITSM-compatible open-source ticket request system (GLPI)
• Monitoring the progress of third-party maintenance contract suppliers
• Developed disaster recovery plans
• Integration monitoring system PRTG
• Implemented new security protocols including forcing password standards for company users
• Implemented and after maintaining Zimbra Mail server as a mail server for 100 users
• Developed and updates documentation, appraising users and administrators of vital information
• Administer Microsoft Windows Servers (Active Directory)
• Performed desktop migration from Windows XP, 2000 to Windows 7, 2008R2. provided technical support for corporate client/server systems
• Implemented SIP telephony with Panasonic KX-TDE100 for office use
• Provided hardware support, software administration management, user technical support

Systems Administrator

Responsibilities:

• Set up, maintained and repaired computer systems including servers (MS Windows 2003R2, CentOS, FreeBSD), desktops and laptops
• Budgeted and purchased hardware
• Monitoring the progress of third-party maintenance contract suppliers
• Created and maintained enterprise portal services
• Developed company IT infrastructure
• Developed and implemented documents flow system (CRM and ERP)
• Configured SIP-telephony (Asterisk PBX)