Chigozie Philip

💻 Professional Summary

Highly skilled System Administrator and IT Infrastructure Specialist with 8+ years of experience in server administration, network management, system hardening, and enterprise IT support. Expert in deploying, maintaining, and optimizing secure, high-availability environments across Linux and Windows systems, virtualization platforms, and cloud-integrated infrastructure. Proven track record of improving system performance, reducing downtime, implementing backup and disaster recovery solutions, and enforcing security best practices. Experienced in automation, patch management, user access control, monitoring, and troubleshooting complex infrastructure issues in fast-paced production environments.

🔧 Core Competencies

Linux System Administration

Windows Server Administration

Network Administration

Proxmox Virtualization

VMware vSphere

Active Directory

Group Policy (GPO)

DNS/DHCP Services

TCP/IP Troubleshooting

Server Hardening

Patch Management

Backup & Disaster Recovery

Storage Administration (RAID/NAS/SAN)

System Monitoring

Prometheus Monitoring

Grafana Dashboards

Docker Containers

PowerShell Scripting

Bash Automation

User & Access Management

Incident Troubleshooting

Compliance Support (SOC2, ISO27001)

Performance Optimization

🚀 Professional Experience

System Administrator

likos.uno

Jan 2021 - Present

Designed and deployed enterprise-grade Proxmox virtualization infrastructure supporting 50+ production and test workloads with automated provisioning, backups, and performance monitoring
Administered Linux and Windows server environments, maintaining 99.9% uptime through proactive maintenance, patch management, and system hardening practices
Implemented centralized monitoring and alerting using Prometheus and Grafana, reducing incident detection and troubleshooting time by 70%
Automated routine administrative tasks with Bash and Python scripts, improving operational efficiency by 60% and reducing manual configuration errors
Managed core network services including DNS, DHCP, VPN, and firewall configurations, improving internal connectivity, segmentation, and access reliability
Established backup and disaster recovery procedures for critical systems and virtual machines, ensuring fast recovery and business continuity during outages
Led user account administration and access control management across servers and services, enforcing least-privilege principles and audit-ready documentation
Created and maintained technical SOPs, infrastructure documentation, and system diagrams while mentoring junior IT staff on troubleshooting and administration best practices

System Administrator

SecureNet Technologies

Mar 2019 - Dec 2020

Administered and supported multi-site IT infrastructure for 40+ organizations across healthcare, finance, and technology sectors, ensuring stable server, network, and endpoint operations
Built and maintained isolated lab and staging environments using Proxmox containers and virtual machines, enabling safe testing, patch validation, and deployment planning without impacting production systems
Performed advanced network and system troubleshooting using Wireshark, system logs, and performance monitoring tools, reducing recurring outages and improving service reliability
Developed automation scripts for user provisioning, patching, backups, and system health checks using Bash, PowerShell, and Python, reducing manual administration time by 45%
Implemented centralized backup and disaster recovery processes for critical servers and business data, improving recovery readiness and minimizing downtime during incidents
Managed core infrastructure services including Active Directory, DNS, DHCP, file shares, VPN access, and firewall rules to support secure and efficient business operations
Delivered technical support documentation, end-user training, and administrator SOPs, improving IT response consistency and reducing ticket resolution times
Collaborated with security and compliance teams to harden systems, apply access controls, and maintain audit-ready configurations aligned with internal policies and industry standards

System Administrator

TechGuard Corporation

Jun 2017 - Feb 2019

Managed enterprise systems monitoring infrastructure using Prometheus and Grafana, providing real-time visibility into server health, network performance, and resource utilization across 500+ endpoints
Administered and maintained Linux and Windows servers, performing provisioning, patching, hardening, and troubleshooting to ensure stable and secure operations
Implemented secure internal communication and collaboration services with proper access controls and encryption, improving reliability for sensitive business operations
Deployed and configured centralized monitoring and alerting with custom thresholds, improving issue detection accuracy and reducing false positives by 65%
Managed user accounts, permissions, and access controls across Active Directory and Linux environments, strengthening least-privilege enforcement and audit readiness
Maintained core infrastructure services including DNS, DHCP, VPN, and file sharing systems, ensuring secure and uninterrupted connectivity for on-site and remote teams
Automated routine system administration tasks using Python and Bash scripting, reducing manual effort and improving response time for operational incidents
Maintained backup and recovery procedures for critical servers and business data, improving system resilience and reducing downtime during failures and maintenance windows

Junior System Administrator

CyberLabs Research Institute

Aug 2015 - May 2017

Provided day-to-day administration and support for Linux and Windows systems, maintaining reliable operations for research labs, internal services, and user workstations
Built and maintained virtualization lab environments using Proxmox, enabling safe testing, server deployment practice, and isolated development systems for technical teams
Performed routine system maintenance including patching, updates, hardware checks, and performance tuning to improve uptime and reduce recurring issues
Configured and supported core network services such as DNS, DHCP, file sharing, and remote access, ensuring stable connectivity for staff and researchers
Monitored servers and network devices using system logs and monitoring tools, identifying issues early and assisting with incident troubleshooting and resolution
Created Bash and Python scripts to automate backups, user account setup, system health checks, and repetitive administrative tasks, improving team efficiency
Documented system configurations, troubleshooting steps, and standard operating procedures, helping improve knowledge transfer and support consistency across the team
Assisted senior administrators with backup and disaster recovery testing, access control management, and infrastructure upgrades in a fast-paced technical environment

🎓 Education

Master Cybersecurity

WGU • 2025

Thesis: "Advanced Persistent Threat Detection in Virtualized Environments"

Bachelor of Management Science

2008

Magna Cum Laude • Focus: Business management

🏆 Certifications

Inviews

• RHCSA - Red Hat Certified System Administrator

• RHCE - Red Hat Certified Engineer

• CompTIA Server+

• Microsoft Certified: Windows Server Hybrid Administrator Associate

• CompTIA Network+

• Linux Professional Institute LPIC-1