Alvin Frimpong
Poughkeepsie,USA
Summary
Highly skilled Linux System Administrator with 7+ years of extensive experience in installation, configuration, and maintenance of CentOS, RedHat Enterprise Linux (RHEL), and Unix (AIX) servers. Proven expertise in managing cloud environments, virtualization, database administration, scripting, security protocols, and network optimization. Adept at leveraging various tools and technologies to ensure high availability, security, and performance of IT infrastructure. Determined Linux System Administrator with expertise in multiple open source operating systems. Passionate about improving network uptime and driving system availability. Strong team player with excellent work ethic, collaboration skills and independent judgment.
Overview
6
6
years of professional experience
1
1
Certification
Work History
Linux System Administrator
McKinsey & Company
New York, NY
07.2023 - Current
- Spearhead the installation, configuration, and maintenance of CentOS, RedHat Enterprise Linux (RHEL), and Unix (AIX) servers, ensuring 99.9% uptime
- Employ a Logical Volume Manager (LVM) for efficient partitioning, formatting, mounting, and adjusting disk size with the changes within the environment accordingly
- Expertly handle system updates and patch management using RPM and YUM, reducing vulnerabilities by 50%
- Generate SSH authenticating keys to secure the environment and ensure passwordless access for users to remote servers
- Integrate and manage Microsoft Office 365 (O365) applications including Teams, Skype, SharePoint, and Outlook, enhancing collaboration and productivity
- Provide support for Remote Desktop Services and other Microsoft-based applications, ensuring seamless operation and user experience
- Lead the installation, configuration, and maintenance of Unix (AIX) servers, ensuring high availability and optimal performance
- Develop and maintain advanced Bash and Shell scripts for automating critical system tasks, reducing manual workload by 60%
- Install, configure, and maintain web servers including Apache HTTP Server (HTTPD), Nginx, and LAMP stack, ensuring high availability and performance
- Monitor log management on UNIX/Linux servers, including processes, crash, and swap management, with password recovery and performance tuning
- Optimize AIX systems using HMC and perform efficient network installations with NIM, enhancing deployment speed by 30%
- Manage cloud storage solutions like AWS S3 and AWS EBS, enabling flexible and secure data management
- Enhance network performance by tuning TCP/IP settings and ensuring proper bandwidth management
- Set up and manage LDAP servers to centralize user management, authentication, and authorization services across networked resources
- Configure and manage high availability and fault tolerance features in vSphere to minimize downtime and ensure continuous service availability
- Install, configure, and optimize MySQL and MongoDB databases, enhancing database performance and reliability
Linux Admin/Engineer
IBM
Poughkeepsie, NY
11.2020 - 06.2023
- Constructed IBM Power Servers (Power, Power 9, Power 10) in FRAME
- Deployed Redhat 8 and AIX 7.2 on IBM Power servers and VMware
- Established and maintained LAMPStack Environment
- Developed and edited bash scripts to automate and resolve repetitive tasks
- Executed a 24/7 on-call rotation to monitor client servers and report issues through ticketing and phone calls
- Administered virtual machines/ESX servers on VMware vSphere
- Managed user accounts, assigned permissions, and conducted user management tasks
- Oversaw and maintained backup servers, disk storage, and virtualization products throughout the organization
- Retrieved and installed the latest kernel versions to support new components/parts
- Diagnosed and took ownership of issues that arose with various applications and systems while working to resolve them
- Conducted server refreshes and maintained server integrity by configuring firewall rules for network communication
- Performed data center operation tasks following user guides, operational processes, and SOPs
- Configured, and managed Apache (HTTPD) on Linux production servers
- Diagnosed and troubleshot technical issues involving both hardware and software
- Collaborated with developers on open tickets for application defects
- Monitored the performance of servers, software, hardware, and networks using tools like Nagios and Zabbix
- Conducted incident analysis including process management, CPU, and memory analysis to quickly recover from service interruptions and prevent recurring issues
- Utilized AFS and GitLab to make changes and pilot code releases
- Managed system backups and replication running on third-party backup solutions and through local RHEL tools (e.g., zip, tarball)
Linux Administrator
Epsilon
Wakefield, MA
02.2019 - 10.2020
- Supported all LAN hardware and software, including servers, peripherals, network nodes, terminals, and other devices at the corporate level
- Ensured seamless integration of LDAP with other services such as email, web applications, and file services for authentication purposes
- Monitored DNS server performance and troubleshoot latency issues or failures
- Deployed and managed virtual machines with VMware and KVM, enhancing resource allocation and system scalability
- Integrated and managed cloud storage solutions such as AWS S3 and EBS, enabling scalable and flexible storage options
- Configured and managed file systems, LVM, SAN, NAS, AFS, JFS, and JFS2 AIX, optimizing storage solutions for enterprise needs
- Coordinate software installations and updates using package management tools like RPM and YUM
- Developed and maintained efficient Shell scripts for automating routine tasks, reducing manual effort, and increasing consistency
- Utilized tools like Jira for incident and problem management, ensuring timely resolution and continuous improvement
- Leveraged cloud platforms such as AWS EC2 and Azure for robust, scalable infrastructure solutions
Education
Bachelor's - Computer Science
University of Ghana
01.2014
Skills
- CentOS
- RedHat Enterprise Linux (RHEL)
- Unix (AIX)
- Windows Server
- TCP/IP
- DNS
- NFS
- FTP
- File system creation
- LVM (Logical Volume Manager)
- VMware
- Cloud Computing (AWS EC2, Azure)
- Docker
- AWS S3
- AWS EBS
- MySQL
- MongoDB
- Database Backup and Recovery
- Backup and recovery
- Bash Scripting
- Shell scripting
- Ansible
- Automation
- SOPs
- Linux and Web Security
- LDAP
- SSH Security
- SSL Certificates
- Nagios
- Apache HTTP Server (HTTPD)
- LAMP Stack (Linux, MySQL, PHP)
- Nginx
- System monitoring
- Linux administration
- Security management
- Workstation onboarding
- Server maintenance and management
- Debugging network configuration
- File system management
- Hardware troubleshooting
- Server monitoring
- Git/GitHub
- Remote Desktop Services
- Jira
- HMC
- User Support Management
- Troubleshooting
- Network configuration
Certification
Interskill - AIX Systems Administrator – Fundamentals, IBM
Timeline
Linux System Administrator
McKinsey & Company
07.2023 - Current
Linux Admin/Engineer
IBM
11.2020 - 06.2023
Linux Administrator
Epsilon
02.2019 - 10.2020
Interskill - AIX Systems Administrator – Fundamentals, IBM
Bachelor's - Computer Science
University of Ghana
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