SUMMARY:

• Experience with UNIX / LINUX - red Hat Enterprise Linux 5,6,7 systems including building of servers, migration, production support, data center support, packaging, automation, troubleshooting and security hardening of servers.
• Experience with managing and integrating with virtualization solutions (VMware, LDOMs, Zones)
• Experienced in configuring and administering NFS, NIS and FTP with very good understanding of networking protocols such as TCP/IP, DNS.
• Experienced with SAN, NAS and storage administration, with EMC Clarion & DMX storage. Configured Sun Multi-Packs, Storage Arrays, T3's and SAN backup for disaster recovery.
• Expert in Linux Performance monitoring, kernel tuning, Load balancing, health checks and maintaining compliance with specifications.
• Build & Release management, shell, python, bash scripting.
• Software configuration management (SCM) and change management (CM) solution using TFS, Rational Clear Case, Jira, Clear Quest (Change Control tool).
• Running security scans and remediating Servers to meet enterprise standards.
• Implemented anti-spam technology based on open source applications on Linux servers.
• Installing, configuring, and maintaining Samba Web Servers, WebLogic and WebSphere Application Servers, and Oracle, SQL and Sybase database technologies.
• Moving RHAS machines from physical to virtual including VMware ESX 3.5 and VSphere 4.0.
• Installing and upgrading VMware tools on client machines.
• Experience in configuring and maintaining NAS and SAN storage.
• Managed Patches, Upgrades and Licensed Products for System software on all flavors of UNIX and Linux Servers.
• Supported Disk Volume Management - creating volume and Logical Volume Manager.
• 24X7 on-call production support and troubleshooting problems related to RHEL and SUSE Linux .
• Experience in Troubleshooting issues related to upgrades of VCenter and ESXi and vSphere update manager.

PROFESSIONAL EXPERIENCE:

Linux Systems Admin

Confidential, Denver, CO

Responsibilities:

• Installation, configuration and upgrade of RHEL 4/5/6/7, Ubuntu, Oracle Enterprise Linux5/6/7 operating systems.
• Automated installation of Linux servers using Kickstart and Installation of Solaris using Flash, live upgrades and Jumpstart Servers.
• Involved partially in deploying WARs/EARs (backend) through JBoss Application Server console.
• Worked for Creating the Software Configuration Management Plan. Worked on Administration, maintenance and support of Red Hat Enterprise Linux (RHEL) servers.
• Responsible for defining the branching and the merging strategies, created baselines and released the code. Designed and implemented Configuration Management processes and procedures
• Used Ant, Maven and Gradle as a build tools on Java projects for the development of build artifacts on the source code. Maintained and administered GIT source code tool.
• Backed up and restored configurations and data of various tools (Subversion (SVN), Jenkins, WAS), databases (oracle, db2) and servers (windows, RHEL) as required.
• Maintained activities related to security in TFS
• Extensively worked on Jenkins/Ansible/Bamboo/Docker. By installing, configuring and maintaining for the purpose of continuous integration (CI) and for End to End automation for all build and deployments.
• Automated the build and release management process including monitoring changes between releases.
• Implementing a Continuous Delivery (CD) framework using Jenkins, Puppet, Maven& Nexus in Linux environment.
• Written Chef Recipes to automate our build/deployment process and do an overall process improvement to any manual processes.
• Setting up Ant and Maven scripts for JAVA and J2EE Builds Imported and managed multiple corporate applications in Subversion (SVN).
• Changed the AWS infrastructure Elastic Beanstalk to Docker with Kubernetes.
• Built Python apps that allowed developers to build proprietary solutions without requiring standard components.

Linux Admin

Confidential, Denver, CO

Responsibilities:

• Working in a Data center environment - swapping of disks, Attaching/Detaching storage, increasing Utilization.
• Experience in writing Scripts in Bash for performing automation of various tasks.
• Installed/ upgraded patches, firmware, MP, GSP, BIOS and security (Kernel) patches for all HW & OS's in installed infrastructure.
• Experience in writing UNIX shell scripts using commands like awk, sed, tcsh, bash, ksh and perl to automate system admin jobs. Responsible for the operation, maintenance and integrity of a distributed, networked AIX based environment.
• Content Management Systems knowledge with e-commerce integration into CMS experience with Linux/Apache/MySQL (Database Management).
• Backup management and recovery policies using VERITAS Net-Backup.
• Experience in creating physical volume. Logical volume, volume groups using LVM’s in Linux/AIX, GFS and ZFS in Solaris.
• Proficient in Networking, configuring TCP/IP, DNS, NFS, NIS, NIS+, SAMBA, LDAP, SSH, SSL, SFTP, SMTP, SNMP.
• Developed Cron jobs and shell scripts (Perl, Python) for automating administration tasks like file system management, process management, server reboots etc.
• Performed patching and OS upgrades and associate hardware break/fix, triage and software installations related to the patching and OS upgrade activities.
• Developed Perl, Shell scripts to take backup of entire applications environment in web sphere (WAS 7.0) before making changes in date roll in oracle DB 11g.
• Experience in VMware Installed and monitored Virtual environments with ESX 6.x servers Experienced in working with Storage Area Network (SAN), IBM XIV, EMC VNX, CLARiiON CX, EMC Symmetrix DMX, HP storage and Hitachi data storage.

Systems Administrator

Confidential, Fullerton, CA

Responsibilities:

• Shell and Perl Scripting for automation, generating reports, cron jobs, distributed patching
• Worked with Kickstart and ISO for Server Installation.
• Manage Linux (RHEL) Servers 5, 6. Configured Monitoring Tools and applications such as apache and jboss
• Manage disk storage using Logical Volume Manager
• Installed VERITAS Volume Manager, VCS Cluster Server for failover and for mirroring and raid level configurations on Sparc, x86 and HP servers.
• Worked with Cfengine, SVN to monitor the configuration of the Server
• Worked on Nagios 3 for Server and application monitoring
• Installation of Netbackup 7.5 Client
• RPM package repository management.
• Worked on RAID configuration.
• Worked on EMC Storage Area Network (SAN), NAS file systems using NFS
• Solid understanding of Linux OS, including security, compilation, and installation of third-party software and networking.
• Development, Acceptance, Integration, and Production AWS Endpoints.
• Responsible for mentoring and cross-resource platform standardization of Web Stack technology and development and implementing of policies and procedures.
• Experience in analyzing and monitor performance bottlenecks and key metrics in order to optimize software and system performance.
• Route 53 configuration.

System Administrator

Confidential

Responsibilities:

• Establish, maintain and manage users Unix accounts. Install, modify and maintain systems and utility software on server computer systems. Provide server support related to other software.
• Production support on application/database servers.
• Support for Hardware failures by troubleshooting/diagnosing and opening cases with IBM support.
• Implemented SUD, SSH and other security tools and security compliance.
• Worked in infrastructure team on installation, configuration and administration of RHEL 5.x/6.x/7 & CentOS 5.x/6. x.
• Installed, configured, and maintained services such as FTP, NFS, DNS, DHCP, Apache and Samba.
• Installing & Configuring dual I/O servers and clients.
• Provided 24/7 technical support and resolution to operators' requests concerning system hardware, software, and network issues
• Played a key role in planning disaster recovery using configuration management and the Red Hat Cluster Suite.
• Provided day-to-day support to IT applications and users group.
• Performed software troubleshooting and resolved NFS, and TCP/PI network issues. Experience using tools such as Net Backup.
• Used VERITABLE File system (VAXes) and VERITABLE Volume Manager (VMS) to configure RAID 1 and RAID 5 Storage Systems on Sun Solaris.
• Configured LDAP authentication and set up external authentication using Active Directory and IPA servers..
• Configured networking interface, set up PI addresses and IPv6 address, working knowledge on DHCP, DNS, and routing.
• Configured and integrated the user environment using NFS combined with auto mount and Autos. Installed software packages and configured File systems as per specifications of client.
• Troubleshooting the CM machines using Virtual center and VMware Infrastructure client. Cloning and troubleshooting CM SEX hosts and guest servers.