SUMMARY:

• System Administrator with over 3 years’ experience in providing technical solutions through high - quality service and support.
• Seeking position in a challenging and rewarding tech environment where I can expand upon my existing skills while contributing to a lively IT team.

TECHNICAL SKILLS:

Operating Systems/Platforms: Window 7/8/10, Window Server 2000, 2003, 2008, Linux (Fedora, CentOS and RedHat).

Applications/Packages: Apache, Tomcat, Nagios, Check MK, Thruk, DHCP, NFS, VMware ESXi, FTP, Samba, OMD, PhpMyAdmin, Jira, Confluence, NagVis, WINSCP, Putty, vSphere, Jenkins, Microsoft Office, Shinken, FileZilla, DNS etc.

Language: Bash Scripting.

PROFESSIONAL EXPERIENCE:

Confidential, Maryland

Linux System Administrator

Responsibilities:

• Administration of local and remote servers using the SSH utility.
• Experience in writing basic Shell scripts using bash for applications, backup and scheduling.
• Daily administration and management of servers, applications and file systems.
• Troubleshooting OS / Hardware related issues and monitor server health on a day-to-day basis.
• Experienced with the virtual build, installation, configuration, and maintenance of Linux RedHat 6 both locally or over network.
• Set up user and group login ID's, network configuration, passwords, and resolution of permission and access related issues.
• Install, configure, maintain, and troubleshoot enterprise-wide Apache web servers and Tomcat application containers in a large RedHat Linux/CentOS environment.
• Participate in application coordination launching process.
• Monitoring via Nagios, Check MK, NagVis, Thruk, Shinken to ensure consistently aware of application, infrastructure, and network health status.
• Working on volume management, disk management using logical volume manager. Performed collaborative root cause analysis to resolve software and network issues in production.
• Applying OS patch and upgrade in a multi-platform (RedHat/CentOS) environment on a regular scheduled basis.
• Hardened various Linux RedHat 6 Servers utilizing security policies and CIS Security Benchmark based template.
• Collaborated with Network Admin in Installing, configuring, securing, and implementing slave replication on DNS BIND servers.
• Knowledge of core system and security applications and protocols such as TCP/IP, DNS and SSH.
• Regularly confers with system administrator and users regarding current and prospective system changes.
• Created and edited Standard Operating Procedures (SOP) and documented various performed activities.
• Explain technical issues and resolutions to application teams and business teams.

Linux System Administration

Responsibilities:

• Installation, Maintenance, Administration and troubleshooting of RedHat Enterprise Linux.
• Performed automated installations of Operating System using kick-start for RedHat Enterprise Linux 5/6.
• Remote monitoring and management of server hardware. Fixed Vulnerability findings reported via security team server audits/reports found utilizing Nessus.
• Involved in Server sizing and identifying, recommending optimal server hardware based on User requirements.
• Built virtualized Linux servers on ESXi, vSphere servers to host multiple applications on same chassis across different server hosts.
• Installation and administration of RedHat & CentOS using RPM and YUM package installations, patch and other server management.
• Managing systems routine backup, scheduling jobs like disabling and enabling cron jobs, enabling system logging, network logging of servers for maintenance, performance tuning, testing.
• Installation and configuration Apache and Tomcat and supporting them on Linux production servers.
• Troubleshooting Linux network, security related issues, capturing packets using tools such as IPTables, TCPwrappers.
• Worked on resolving production issues and documenting root cause analysis and updating the tickets using Jira.
• Installation and Configuration of SSH, NFS, FTP, TCP/IP, DHCP, DNS.

Jr Linux System Administrator

Responsibilities:

• Installation, configuration and administration of 200+ RedHat Linux servers and support for Servers using kickstart based network installation.
• Password integrity and access restriction of all users on all critical servers.
• Limiting of access to live and production environments to only authorized personnel.
• Administration of user accounts adding and deleting accounts and assigning permission and ownership to various user groups.
• Installation, configuration and deployment of Enterprise servers.
• Management and maintenance of NFS and Samba shares.
• Management of DNS servers and DHCP servers.
• Daily generation of performance reports to executive management, on the utilization and performance of all business-critical servers.
• Patch (package) Management on the RedHat servers through RHN network.
• Web server configuration, deployment and support in the nation-wide branch network. (Branch Web servers running on CentOS Linux flavor).
• Installation, configuration and administration of Jira and MySQL servers.
• Installation, configuration and maintenance Apache server for Intranet specifications.
• Installation, Configuration and Troubleshooting of Linux and Windows Servers.
• Support of users (branches) in the nation-wide branch network of the bank.