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Ephraim Ojo Linux System Administrator/EngineerChampaign, IL EMAIL AVAILABLE PHONE NUMBER AVAILABLE Professional SummaryDedicated and skilled Linux System Administrator with 4 years of practical experience in deploying, configuring, and managing secure and optimized Linux systems across on- premises and cloud platforms. Proven ability to automate processes, troubleshoot complex issues, and enhance system performance and security. Certifications- AWS Certified Solutions Architect - In viewCandidate's Name  Certified System Administrator  In view Skills- Operating Systems: Linux (RHEL/CentOS 7 & 8), Windows (2016, 2019, 10)Candidate's Name , Ansible Tower, Zabbix, Qualys, NFS, SFTP- Programming: Bash/Shell scripting- Monitoring Tools: Zabbix- Networking: DHCP, TCP/IP, DNS, SSH, TCP/UDP, SMTP- Virtualization: VMWare VCenter, VMWare ESXi- Automation: Ansible, Bash scripting- Others: Microsoft Office 365, Microsoft Outlook, Jira, Confluence, Veeam, Microsoft TeamsProfessional ExperienceLinux System AdministratorInfosys, Atlanta, GASeptember 2021  Present- Planned, installed, configured, managed, and troubleshooted virtual and physical servers.- Developed Ansible playbooks to manage system configurations and automate repetitive tasks.- Automated routine system tasks with Bash scripting.- Deployed Linux operating systems on physical Dell servers.- Installed and managed Windows operating systems on physical Dell servers.- Installed and administered VMware ESXi on physical hosts.- Deployed and managed virtual Linux machines on VMware ESXi and VMware vCenter.- Configured RAID storage on physical servers for redundancy and improved performance.- Launched virtual machines via AWS EC2.- Integrated and administered users and servers using Microsoft Active Directory.- Performed system capacity planning and performance testing.- Deployed and maintained highly available, scalable, and fault-tolerant systems on AWS using Elastic Load Balancing and Auto Scaling.- Established and managed local file systems with standard and LVM methods.- Created and managed user accounts and groups locally and centrally with Microsoft Active Directory.- Monitored system resource usage with Zabbix and resolved issues proactively.- Enforced user security policies through password aging and sudoers configurations.- Secured systems by configuring firewalls to allow only necessary ports and services.- Implemented system lockdown procedures to enhance security.- Configured and managed networking on RHEL systems using TCP/IP.- Troubleshooted and solved network and performance issues.Candidate's Name  Satellite for package management.- Applied system updates and patches monthly, addressing critical vulnerabilities highlighted by the cybersecurity team.- Created and managed NFS file systems and shared them across multiple client machines.- Installed and configured LAMP stacks for development environments.- Conducted critical system administration tasks in single-user mode.- Set up and managed Samba servers to share data between Linux and Windows machines.- Established secure, key-based, password-less SSH authentication on servers.- Used Atlassian Jira to track and resolve issue tickets.- Documented server configurations and procedures with Atlassian Confluence and Microsoft SharePoint.- Performed regular system backups using Veeam Backup and Replication tools.- Provided weekly system performance and health reports to management.- Participated in a 24/7 on-call rotation for production support. Linux System AdministratorProvidence Solutions, Atlanta, GAJuly 2020  September 2021- Set up servers and applied server patches.- Diagnosed and fixed TCP/IP network problems.- Handled user account management on both local and domain-joined servers.- Prevented direct SSH root access on servers.- Managed file systems and maintained security on Linux servers.- Personalized user shell environments with shell initialization files.- Used cron to schedule and automate tasks.- Supported software developers with various needs.- Secured dedicated servers by disabling unnecessary services.- Set up RAID storage on physical servers for enhanced data redundancy and performance.- Configured password aging policies on servers.- Addressed system and process issues reported by Prometheus. EducationAS in Engineering, Maritime Academy of NG, Oron - 2014