Senior System Administrator Resume

SUMMARY

Self - starter; Install, configure and maintain workstations and servers including web servers in support of business processing requirements; Perform software installations and upgrade to operating systems maintained in accordance with company’s established network policies. Detail oriented with excellent communication, collaborative and problem-solving skills.

PROFESSIONAL EXPERIENCE

Senior System Administrator

Confidential

Responsibilities:

Improve application security by enabling SSL/TLS
Manage Hypervisors and iso images on Dell emc PowerEdge t440/t340 and PowerEdge r740
Assist data base admins with Install, backup/restore and privileges on databases (MYSQL and POSGRES)
Configured and managed various AWS Services including EC2, RDS, VPC, S3, Cloud Watch, Cloud Front, and Route 53 etc.
Installed, configured and administered Windows, Centos and RHEL 5/6/7x on VMware ESXI.
Configured and administered DNS, DHCP, and NFS on Linux machines.
Managed users, groups, network configuration, and granted access to files and applications through LDAP (Webmin).
Setup LAMP STACK to support open source content management (DRUPAL and WORD PRESS)
Focusing on high-availability, fault tolerance, and auto scaling using AWS Cloud Formation.
Monitor system performances (disk, CPU, memory) and failed URL’s Using “SiteScope”
Partitioned disk using mounted file systems, while handling storage allocation and management
Monitored service desk tickets from team in a timely manner (Remedy queue desk).
Used SCP and RSYNC to updates systems and transfer files to different systems as needed
Created local repositories on Linux servers Performed server updates, patching, upgrade and package installations
Work with internal teams to create the migration process of legacy systems to the AWS cloud.
Manage dedicated file storage that enables multiple users and heterogeneous client devices to retrieve data from centralized location (NAS-synology).
Work with Security division to design and manage IAM roles for users, vendors and other third-party vendors.
Designing and implementation of public and private facing websites on AWS Cloud.

System Administrator

Confidential, Washington DC

Responsibilities:

Manage multiple operating systems to share a single hardware host using VMware ESXI.
Install applications such as Apache, Nginx, MYSQL and PHP on Linux Platforms.
Setup VPN (virtual private network) to enable secure/tunnel connection into my environment.
Developed automated build and system tasks using shell scripts (BASH).
Responded to all LINUX systems problems 24x7 as a part of an on-call rotation and resolving issues in a timely
Worked with developers in using Puppet as a; configuration management tool, managing users, resources, deploying servers.
Utilizes change management, request, and ticketing systems, documents status updates and problem resolutions.
Complete all assignments in a timely manner with an acceptable level of quality
Maintains documentation related to work area

Help Desk Tech/Junior Linux System Administrator

Confidential, Washington, DC

Responsibilities:

Use Active Directory to manage permissions and access to network resources
Complete all assignments in a timely manner with an acceptable level of quality
Monitoring System Performance (Virtual memory, Managing Swap Space, Disk utilization and CPU utilization).
Check alert logs, trace files and file System maintenance
Ensures that the technologies are updated with current, stable, compliant architecture and applications that meet enterprise standards.
Responding to change and service requests escalated either through the advanced problem resolution team / helpdesk.
Monitor systems, networks and infrastructure using Nagios core (software application)
Install, Configure, and deploy Linux/windows servers.
Writing scripts for cron job entries, which included maintaining various log files.
Performed automated installations of Operating System using Jumpstart for Solaris and Kickstart for Linux.

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