Sep 2020 – Oct 2021 · 1 yr 1 mo · Sydney, New South Wales, Australia

Jun 2017 – Jul 2020 · 3 yrs 1 mo · Sydney, Australia

• Configuring / managing / troubleshooting L2 network (Cisco switches, meraki switches)
• Installing /configuring/ managing firewalls (paloalto)
• Managing Active Directory / DHCP / DNS Servers.
• G suit and office 365 administration
• Configuring monitoring tools ( zabbix, nagios )
• Managing cloud infrastructure ( AWS )
• Okta single sign-on administration

Jan 2017 – Apr 2017 · 3 mos · Sydney, Australia

Mar 2015 – Nov 2016 · 1 yr 8 mos · Bangalore

• Linux server (Centos and Debian) installation /management and recovery.
• Managing hardware / datacenters in remote locations.
• Developers environment support like network home, sandbox and shared public directories
• Internal development tools support.
• Storage administration (HP P2040, P2000).
• Nagios alerts configuration, acknowledging alerts and actionize them on timely manner.
• VMware ESXi server installation and management. Virtual machines provisioning, configuration changes, replication.
• Create / manage virtual machine templates.
• Local data center management. Servers and storage rack mounting, hardware verification, installation and network connectivity.

Oct 2012 – Feb 2015 · 2 yrs 4 mos · Bangalore

• Installation, configuration and maintenance of Linux VMs and servers.
• Creating and managing user accounts, security, rights, disk space and process monitoring in linux servers
• Installation and upgradation of Packages and Patches configuration management, service pack. & reviewing connectivity issue regarding security problem.
• Creating / managing SSL Certificates
• Administration of RHEL 4, 5, 6 and CentOS 5, 6 which includes installation, testing, tuning, upgrading and loading patches, troubleshooting both physical and virtual server issues.
• Creating, cloning Linux Virtual Machines, templates using VMware Virtual Client 4.1 / 5.0 and migrating servers between ESXi hosts.
• 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.
• Tech and non-tech refresh of Linux servers which includes new hardware, OS upgrade, application installation, testing.
• Set up user and group login ID's, printing parameters, network configuration, password, resolving permissions issues, user and group quota.
• Troubleshooting Linux network, security related issues, capturing packets using tools such as IPtables, firewall, TCP wrappers, NMAP.
• Preparing servers for Oracle RAC installation which includes tuning the kernel, agent installation, adding NAS storage on 2 node clusters.
• Developed automated processes that run daily to check disk usage and perform cleanup of file systems on UNIX environments using shell scripting and CRON.
• Adding servers to domain and managing the groups and user in AD, installing and configuring postfix.
• Performed capacity analysis, monitored and controlled disk space usage on systems.

Mar 2010 – Oct 2012 · 2 yrs 7 mos · Bangalore

• Responsible for UNIX and Oracle Database administration
• Application Administration (WAS/WPS/Web logic/SUNONE Appserver/Webserver/LDAP etc.)
• UNIX server administration (Solaris/HP-UX/AIX/Linux), OS installation, user id management, space allocations, backup / restore activities, patch management, trouble shooting OS issues.
• Taking root backup of all UNIX servers and restoration if required.
• AIX LPAR administration, which includes adding servers to HMC, DLPAR movement of resources, creating new server profiles.
• Oracle database administration on UNIX servers, user id administration, hot/cold backups, databases, import, export, cloning of databases. Database recovery from redo log files, control files failures.
• Implemented Oracle 10G RAC on raw file systems on SUN clusters.
• Implemented Oracle 11g RAC on AIX 6.1 clusters.
• Netapp filer(3040, 3020) administration which includes, ONTAP upgrades, qtree / flex volumes management, managing snapshots / snapmirrors of volumes.
• Have working knowledge of veritas netbackup.
• Managing Virtual hosts with RHEL OS. Updating patches on RHEL virtual machines, ORACLE / WAS / Third party tools installation.
• Documentation and sharing of knowledge on all the implementations done.
• Implemented Decru encryption appliance for backup encryption. Key generation, import and export of keys for backup and restoration.
• Implemented HP Data Protector 6.0 Backup Solution, which will be used to take many servers backup and restoration.
• Serving requested within SLA to avoid business and service impact