System Administrator Linux

BENJAMIN AIDOO

(***) *** – **** ************@*****.***

SUMMARY

A proficient Systems Administrator with a variety of skills relevant to today’s changing phase of system administration. Work closely with an Engineering and DevOps team, where I portray effective communication and teamwork. I am able to manage multiple systems, troubleshoot, identify and resolve problems if/when they arise. Very accomplished in regards to Patching. CAREER HISTORY

TCG, Inc., Washington, D.C.

Linux System Administrator

02/2020 – Present

Client: Office of Management and Budget (OMB)

Responsibilities

● Conducts patching, installing / updating Linux Machines as part of routine monthly maintenance to enhance security and provide the latest software and features

● Provides appropriate dates / time schedule for patches in all environments to ensure timeliness and effectiveness of the process

● Manages Red Hat satellite

● Manages disk and file systems using LVM

● Manages daily activities, including user support and system administration tasks

● Coordinate with other system administrators to troubleshoot and resolve issues after system reboots

● Manages multiple servers and enforces system configuration using Puppet

● Administers Zabbix monitoring tools for server monitoring and periodic incident alerts to individual application owners

● Involved in resolving incidents logged by Zabbix and day to day user problems.

● Monitors server performance using tools like Top, Free, Sar, VMstat, Traceroute, and iosat.

● Performs and monitors weekly data center reboots to ensure all VMs and applications are available. Retires VMs as needed.

● Creates, assigns, and / or manages tickets in Jira to ensure efficient and effective workflow

Accomplishments

● Improved service performance and reliability through investigation and root cause analysis while monitoring servers in Zabbix.

● Scheduling and performing patching procedures in a timely manner to enhance security and provide developers and customers with the latest software and features.

● Participated in process improvement for system patch updates by pushing for a more frequent cycle (from monthly to bi-weekly), ensuring that OMB always has optimal performance of systems, which in turn boosts productivity. BENJAMIN AIDOO

The Cognitive Group Project

Linux System Administrator

07/2014 – 02/2020

● Building of both Virtual and Physical servers in three different environments

● Troubleshooting various issues following a ticketing system submitted by customers

● Hardening of servers

● Building EC2 instances, configuring security groups, taking snapshots and backups in AWS

● Using various monitoring tools to monitor the environment and troubleshoot any alerts

● Creating user accounts and maintenance of the user environment to make sure accounts are removed and privileges are set in accordance with employee status

● Updating various applications and servers to ensure conformity with security procedures

● Installing and configuring various services such as NFS, Apache, NTP, FTP etc.

● Ability to understand client requirement and provide the best solution.

● Installed Red Hat Linux using Kick Start and applying security policies hardening the server based on the company policies.

● Automation of tasks using Bash Scripting, Ansible and setting up jobs using Cron

● Building and hosting of virtual servers using VMware (esxi 6.0)

● Utilizing Jira and Confluence for Ticketing and Documentation and cleaning up both applications to make sure it conforms with company standard

● Planning and documenting disaster recovery procedures and best practices and training others in the IT organization.

● Email administration

Ghana Commercial Bank

Linux System Administrator

02/2012 – 06/2014

● Installation, configuration, maintenance of Linux servers and workstations.

● Provided Help Desk support, created Users, Groups and mount points for NFS support management of user accounts, files and directory permissions, and secured systems to match industry best practices.

● Maintained and supported 600 servers and hosted servers using VMware.

● Wrote and edited scripts using Bash.

● Installation and configuration of SSH software to provide secure logins for clients involved in shell and data transfer.

● Installation and configuration of VMware workstation on Linux platforms EDUCATION

University of Ghana

B.S., Computer Science

2008

BENJAMIN AIDOO

CERTIFICATION & TRAINING

● CASP+, 2024

CLEARANCE

● SSBI (Active)

SKILLS

● Red Hat (7)

● Red Hat Satellite (4)

● CentOS (6)

● Linux (10)

● Ubuntu (6)

● Windows (6)

● MS Office (6)

● G-Suite (6)

● Apache HTTP (4)

● Bash (4)

● VMware 5/6 (6)

● AWS (1)

● Ansible (6)

● TCP/IP (6)

● NFS (6)

● Jira (6)

● Puppet (3)

● Python (1)

● Citrix (4)

● LDAP (4)

● RPMs (3)

● VMs (6)

● Zabbix (4)

● DevOps (1)

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