Mariappan is a Linux system administrator with over 7 years of experience seeking new opportunities. He currently works at CognitiveMobile Technologies maintaining Linux servers, including setting up LAMP stacks, securing applications, troubleshooting client issues, and more. Previously he held roles at Ygen Communications, Snowwood Infocom Technologies, and G2G Technologies involving network administration, desktop support, hardware troubleshooting, and software installation. He has expertise with tools like Apache, MySQL, iptables firewalls, and various Linux distributions.

1. RESUME
Mariappan 9787423200
mariappan.suren@gmail.com
Summary
Presently I am working in Linux Administration and looking for job opportunity in the same
domain. Had been experienced in open source tools and Linux Server Hardening and Computer
Hardware Troubleshooting and being experienced in desktop support. Present location is
Chennai and would be interested to move to new places if there are opportunities.
Employment History
Sl.
No
Name Of the Organization From To Designation
1 CognitiveMobile Technologies
Pvt Ltd., Chennai
1 Apr 2013 Till date System Engineer
2 Ygen Communications Pvt Ltd,
Chennai
1 Nov 2011 31 Mar 2013 Consultant (Network
Admin)
3 Snowwood Infocom
Technologies Pvt Ltd, Chennai
2 Aug 2010 31 Oct 2011 Asst. System Admin
4 G2G Technologies, Tirunelveli Dec 2008 Apr 2010 Hardware Engineer
Education
Sl.
No
Degree Name Of the Institute Year of Completion
1 BE (Computer
Science)
College of Engineering, Anna University 2015
2 Diploma in
Computer
Science
IRT Polytechnic 2007
Professional Experience:
@CognitiveMobile

2. Cognitivemobile Technologies private Limited is a Product Development company based on
Chennai that has clients in USA. We are having a 2 member System Support team here (that
includes me) and would like to listing out some of our activities in Support and Maintenance.
• Settting up a Linux instance to run our applications for web hosting (LAMP) Trouble
Shooting
• Secure our application-Security scan
• Good Understanding of various Linux Applications, Services, Network management
• Troubleshooting the client side issues related to our applications
• Installed and configured Linux Servers for our web application
• SAMBA file sharing for Windows.
• Configured the Linux servers with DNS, VSftp,.
• IP NATTING and maintain the hardware firewall Configured and implemented secured
internet gateway with squid and rule set of IPtables as firewall
• Perform Installations and part of Database administration with Mysql in the database
servers like and MySQL.
• Administration of user accounts, monitoring and troubleshooting
• Installed and configured Tomcat servlet integrated with Apache web server. Application
deployment ,
• Monitoring, Log maintaining and troubleshooting of Tomcat servers
• Install and configure Netgear Wireless Router(Access Point) & Wireless Printer
configuration
• Effectively use rescue environment for recovering file system
• Checking file systems on a periodical basis on all UNIX/Linux Servers
• Trouble shooting of errors related to Linux and various Applications
• Configured mail clients like MS Outlook, outlook express and evolution for various Team
members.
• Installed Linux on LAMP in order to test our web applications
• Implementing systemsoftware upgrades for expansion.
• Performance Tuning & Cost Optimizing.
Skills:
 Installation of the software and hardware.
 Configuring the switches routers, modem etc.
 Installation of Windows, Linux Systems.
 Resolving the Network problems.

3.  Maintaining and repairing the Network.
 Network Troubleshooting.
 Printer Servicing.
 Data recover in Hard Disk
 Apache Tomcat Webserver
 MySQL Server
 DHCP server configuration on Linux
 DNS server configuration on Linux
 Mac OS installation and troubleshooting
 IPTables firewall Configuration
Sl. No Category List of Tools
1
Application Software:
SSH, FTP server, Samba server, Apache tomcat , MySQL
server,
2 Platforms
Red Hat Enterprise Linux, CentOS, fedora, windows server
2008, MAC OS
3 Firewall
IPTables on Linux
4 Monitoring Tool Nagios Installation and Maintenance
5
Webserver
Apache Tomcat and Web server
6 Name Server DNS, DHCP on Linux
File Sharing VSFTP, SAMBA
6 Data Base MySql
@ Ygen Communication
Ygen communication Private Limited is an Information Technology (IT) product and services
company. The expertise in strategic consulting, combined with products and practices, enables
us to be an end-to-end IT solutions provider for meeting customer needs.
Work details:
 Ensure the compatibility of the hardware and software of the system by determining it.

4.  Responsibilities include analysis, installation maintenance and modification of Storage
area Network and computing system.
 Responsible for the evaluation and recommendation of the new hardware and software.
 Assist teamin resolution of hardware, software and system issues.
 Analyze performance of the systemand ensure the performance objective and
availability of the requirements.
 Responsibility to provide the desktop systemadministration and support to the
network.
 Interact with the clients to resolve the queries, issues and problems.
 Responsible for providing help, support and assistance in initial installation of the
system, setup and maintenance of the user account, data recovery, etc
 Maintenance for Linux server and windows server 2008 in SVN server.
 Installation and configuration of Linux , Server in production and test environments
 Extensively worked the LAN/WAN, firewalls and routing for the Internet and intranet
connectivity using different protocols like TCP/IP,DHCP, HTTP/S, FTP, SSH, DNS.
 Co-ordinate with Middle ware team in installation, configuration and troubleshoot
issues with web share application Server and Apache /Tomcat server on Linux
 Installation configuration support and security implementation on following services
DHCP : Range of IP, Assigning fixed IP to Mac address
SSH : Configuration Server, Password-fewer authentications Configuration
SAMBA: Sharing folders, Creating Samba Users
DNS : Server configuration and maintenance
HTTPD: Apache web server maintenance, installation, configuration, managing web
Hosting including security check and periodic upgrades
 Installation and configuration of database systemEg:- MySQL
Sl. No Category List
1
Platform
Fedora ,CentOS, windows server 2008, MAC OS
@ Snowwood
Work Details:
• Windows Server 2003, 2008 R2 installation, deployments, troubleshooting and
automation
 Windows Server 2008 Hyper-V virtualization configuration for servers
 SQL Server 2005-2008-2012 installation and Troubleshooting
 Managed the Desktop Support team which supported Windows XP, Vista and Windows
7 along with the MS-Office including mail services.

5.  Investigated new technologies, software, patches, and security packages, which will
improve systemperformance and systems administration procedures.
 Maintenance of, Microsoft Office Outlook Web Access and Maintenance of Microsoft
Office Outlook E-mail, Calendaring & Scheduling. Troubleshooting of Microsoft Office
Outlook database & structure problems.
 Assist in troubleshooting production issues with members of other teams within I.T.
 Troubleshoot server hardware issues and work with service providers to facilitate
repairs
 Assembling Various branded System
 Installing OS and other application as per customer requirements
 Trouble shooting the problem in the hardware and software (like printers, drives,
motherboards)
 Giving support to network related issues
 Troubleshooting the issues related to OS, Application, Network connectivity
Environment:
Windows98, Windows XP. Windows 7, Windows Server 2008
@ G2g Technologies
Work Details:
• Assembling Various branded System
• Installing OS and other application as per customer requirements
• Trouble shooting the problem in the hardware and software (like printers, drives,
motherboards)
• Identifying the leads through walk-In
• Install and configure network setup in office, school and like varies companies
• Giving support to network related issues
• Troubleshooting the issues related to OS, Application, Network connectivity
Personal Details:
DOB : 05.11.1986
Sex : Male

6. Marital Status : Unmarried
Nationality : Indian
Languages Known : Tamil & English
Permanent Address : 3/79 South Street, Alawarkarkulam, Srivaikundam (TK),
Tuticorin – 628619
Current Address : 2, Kumaran Street, Kamaraj Puram, Velacherry Bypass
Road, Chennai - 600042