System Administrator Network Security

OLUWAGBENGA ADEBAYO

Mylander Lane, Towson, MD ***86 • ***********@*****.***

Professional Summary

Experienced IT professional with over 7 years in systems administration and infrastructure management, transitioning into cloud engineering and data architecture roles. Strong expertise in Linux/Windows environments, cloud services (AWS, Azure), automation, scripting, and infrastructure monitoring. Proven ability to deploy, secure, and optimize cloud-native environments with a focus on CI/CD, containerization, Infrastructure as Code (IaC), and high-availability systems. Well-versed in managing data platforms, scripting ETL operations, and supporting analytics pipelines in secure, scalable environments.

Technical Skills

Cloud Platforms: AWS (EC2, S3, IAM, CloudWatch), Azure (VM, Storage, Network Security Groups)

Operating Systems: RedHat/CentOS, Ubuntu, Windows Server 2003–2019

Scripting/Programming: Bash, PowerShell, Python (basic)

DevOps & CI/CD: Jenkins, Git, GitLab, GitHub Actions, Jira, Confluence

Infrastructure as Code: Terraform (basic), CloudFormation (basic), Ansible (basic)

Containerization: Docker (basic), Kubernetes (learning)

Monitoring & Logging: Nagios, Icinga, SiteScope, CloudWatch

Security Tools: OSSEC, DenyHosts, fail2ban, IAM Policies, VPN

Version Control: Git, GitLab

Virtualization: VMware vSphere, vCenter, Hyper-V

Database: MySQL, MS SQL Server

Web Servers: Apache, Tomcat, IIS

Networking: TCP/IP, DNS, DHCP, Load Balancing, VPN

Certifications

CompTIA Linux+ – Issued: 11/27/2017

LPIC-1: Linux Administrator – Issued: 11/27/2017

Education

Towson University, Baltimore, MD

Bachelor of Science in Computer Science – Expected 2025

Baltimore City Community College, Baltimore, MD

Associate of Arts in Information Systems – 2019

Obafemi Awolowo University, Ile-Ife, Nigeria

Bachelor of Science in Microbiology – 2013

Professional Experience

System Administrator Chimes – Baltimore, MD April 2014 – Present

Deployed and managed over 100 RedHat-based Linux servers across hybrid environments, enhancing scalability and operational efficiency.

Automated provisioning with Bash scripts and RedHat Satellite, reducing server build time by 40% and minimizing human error.

Designed and implemented proactive monitoring using Nagios and Icinga, improving uptime compliance with SLAs by 25%.

Streamlined CI/CD pipelines via Jenkins and GitLab, accelerating release cycles for internal tools and infrastructure updates.

Administered core infrastructure services including DNS, DHCP, VPN, and IAM, ensuring consistent security and high system availability.

Strengthened system security using OSSEC, fail2ban, and CMS ARS 5.0-aligned practices, reducing potential threat vectors by 30%.

Authored comprehensive SOPs and technical documentation, contributing to audit readiness and team onboarding efficiency.

Led patch management and LVM disk scaling for mission-critical systems, maintaining performance during peak demand.

System Administrator Erosun – Baltimore, MD September 2013 – February 2015

Provisioned and maintained virtualized server infrastructure using VMware vCenter, improving server deployment turnaround by 50%.

Managed MySQL database instances, implementing regular backups, access controls, and query optimization to support analytics workloads.

Applied system hardening techniques including log audits and file integrity checks, enhancing compliance and reducing vulnerability exposure.

Diagnosed and resolved network service issues (DNS, NFS, TCP/IP), restoring critical operations within established SLAs.

Program Technician Infinite Possibilities – Odenton, MD Dates Not Specified

Built and supported LAMP stack environments for internal web applications, reducing deployment time for new tools by 35%.

Configured and maintained Piranha load balancers, improving service uptime and response time during peak usage.

Administered Apache and IIS web servers, ensuring secure and stable access to internal platforms and services.

Documented system deployment processes and created standardized imaging procedures, accelerating server replication and reducing configuration inconsistencies.

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