Security Software

SAMUEL DONKOR

Email: adktgh@r.postjobfree.com Phone #: 516-***-****

www.linkedin.com/in/samuel-d-6909701aa

LINUX/UNIX SYSTEM ADMINISTRATOR

I am a competent, flexible, and adaptable Unix/ Linux System Administrator who can be relied on to complete tasks diligently in line with company procedures and in a timely manner to ensure efficiency. I have over 6 years’ experience in system administration, Server builds, Installation, Upgrades, Patches, configuring and troubleshooting Linux, windows, and AWS Servers, creating, and managing user accounts, and other critical system admin tasks. I have Proven leadership capabilities; a fast learner; a strong analytical skill; proven teamwork abilities. I am Comfortable operating on a wide range of Linux platforms and proactive in identifying and resolving critical systems and network issues. Desiring a position in an incredibly challenging environment where my experience will be utilized, in providing creative and innovative IT solutions.

Core Competencies

Network and System administration, Configuration Management, System Monitoring, and System Security hardening, Ansible.

Hardware and Software Installation.

Cloud computing System, Top Level Troubleshooting.

Access management and Operating systems (Linux, Unix, Windows).

Technical Skills

Firewall, System Admin, CentOS, RedHat, Microsoft Office Suite, LDAP, TCP/IP, NFS, DNS, FTP, VMware, Scripting.

Work Experience

UPS Timonium, Maryland, May 2017 – December 2020 Linux Systems Administrator

Performed daily administrative tasks such as troubleshooting automation equipment and unit maintenance on multi-functional process systems.

Managed daily activities to include user support and system administration tasks. Using monitoring commands such as top, df, vmstat etc. With a combination of a monitoring application like Nagios to sustain and manage the environment 24/7

Installing and configuring over 600 Linux Red Hat servers in the network per specifications of clients. Troubleshooting as required by clients

Spinning up AWS EC2 Instances and creating of Security groups to control inbound and outbound traffic Installing, configuring, and maintaining Apache on Linux.

Ability to understand client requirements and provide the best solution.

Applying security policies, hardening of servers based on the company policies.

Utilizing applications like Jira and Confluence For business continuity

Working close with Devops team to help with the automation of the environment Building and hosting of virtual servers using VMware (ESXI 6.5)

Automate patch deployment to Linux OS and third-party applications with Ansible as well as tests software package

Creating and participating in the creation of training Documents

Ability to take on weekends and odd hour shifts to ensure little to no disruption of local and operational systems during scheduled maintenance and outages

Creates and managed Active directory in windows

Security Configuration, Network monitoring on Linux based servers basic hardening of the systems and network security, attaining the goal of allowing only the valid users/ports into the system. Configured volume groups and logical volumes, extended logical volumes for file system growth needs using LVM commands.

Good knowledge of the RAID groups

Jislah IT Group, Washington DC October 2014 – April 2017 Linux Systems Administrator

Responsible for troubleshooting networking problems, installing, and configuring both hardware and software appliances, setting up access points, creating and managing user accounts, patching systems and performing regular system evaluations

Creating servers using VMware

Updating of Servers and applications every month

Maintain and support 600 servers

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

Offering Help desk support to clients.

Maintain and update software as needed in Linux

Installs RDP on client machines and guides them to login into their servers.

Worked as Linux administrator supporting the Server farm in the 24/7 production environment. Edited Linux Shell scripting to accomplish redundant tasks to simplify in distributed administration. Worked on Security/Administrations, created groups and users with Develop and maintain the documents, library, and procedural documents of the system.

Setting up cron schedules for backups and monitoring processes.

Educational Qualification

University of Ghana - bachelor’s in computer science (2004-2008)

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