System Admin

LYLLCELSIUS NNODIM

Lakewood, CA ***** ********@*****.*** 864-***-**** LinkedIn: linkedin.com/in/lyllcelsius

PROFESSIONAL SUMMARY

Accomplished Systems/Server Administrator with a Bachelor’s degree and 8+ years of experience managing, maintaining, and securing enterprise IT infrastructure across higher education, healthcare, and corporate environments. Proven expertise in Windows Server administration, endpoint management, group policy configuration, software deployments, and enterprise-level troubleshooting. Skilled in diagnosing and resolving complex network, server, and endpoint issues. Adept at delivering scalable technology solutions, ensuring operational uptime, and leading IT projects. Recognized for organizational, problem-solving, and leadership abilities, holding multiple certifications including MCSA, MCSE, MCP, and AWS Cloud Practitioner.

CORE COMPETENCIES

• System & Server Administration (Windows Server 2003–2025)

• Endpoint Management & Windows Update Deployment (SCCM, GPO)

• Network, Server & Endpoint Troubleshooting (Tier 3)

• Software Pushouts & Patch Management

• VMware, Azure, Nutanix, and Hyperconverged Infrastructure

• Active Directory, M365, Exchange Administration

• Backup & Disaster Recovery (Rubrik)

• SQL Administration, ERP (Great Plains), Document Locator

• Firewall & Security Tools (FortiGate, Darktrace)

• Compliance, Risk Management & IT Security Best Practices

• Cross-Functional Team Collaboration & Vendor Management

• IT Project Leadership & Process Optimization

CERTIFICATIONS

• Microsoft Certified Professional (MCP)

• Microsoft Certified Solutions Associate (MCSA)

• Microsoft Certified Solutions Expert (MCSE)

• AWS Cloud Practitioner

• Document Locator Administrator

• BeyondTrust Administrator

• SCCM Administrator

• SQL Database Administrator

PROFESSIONAL EXPERIENCE

Operating Systems Analyst / System Administrator California State University, Dominguez Hills – Carson, CA Jan 2022 – Jan 2025

• Administered Windows Server environments supporting mission-critical applications and scalable infrastructure.

• Delivered tier-3 escalation support for network, server, and endpoint issues in an enterprise setting, reducing downtime by 25%.

• Designed and enforced Group Policy configurations to standardize system security across the campus.

• Managed Windows Update deployments and software pushouts using SCCM, ensuring compliance with institutional IT standards.

• Coordinated infrastructure projects for VMware, Nutanix, and Azure environments.

• Oversaw enterprise backup and disaster recovery using Rubrik to safeguard institutional data.

• Led IT upgrade projects from planning to completion, demonstrating 2+ years of project management leadership.

Clinical Technical Support Analyst UnitedHealth Group – Long Beach, CA Jan 2021 – Jan 2022

• Provided advanced IT support across clinical and corporate environments, resolving escalated technical issues.

• Deployed and maintained endpoint security measures, group policies, and software updates to improve security posture.

• Partnered with vendors to ensure seamless system integrations for medical devices and healthcare applications.

• Developed training resources and mentored junior IT staff, improving team performance.

System Administrator CTC Global LLC – Irvine, CA Sep 2016 – Jan 2021

• Managed enterprise network and server infrastructure, ensuring 99% uptime.

• Configured and maintained Active Directory, Exchange, and M365 environments for enterprise users.

• Executed software deployments, patch management, and endpoint updates to maintain system health.

• Performed SQL maintenance for ERP systems and trained staff on database processes.

• Led IT security initiatives, mitigating vulnerabilities through proactive monitoring.

IT Support Specialist Zodiac Aerospace – Huntington, CA Sep 2015 – Sep 2016

• Provided Tier 2 support for hardware, software, and network-related issues, ensuring rapid resolution.

• Automated update deployments and software installations, improving efficiency and compliance.

• Delivered IT protocol training to enhance user knowledge and reduce repeated incidents.

Technical Support Analyst Water and Power Community Credit Union – Los Angeles, CA Sep 2013 – Aug 2015

• Handled complex escalated support tickets, resolving 200+ monthly issues.

• Implemented IT best practices that improved system reliability and reduced downtime.

• Authored detailed technical documentation to streamline troubleshooting processes.

EDUCATION

• B.A. Arts and Social Sciences – Urbania Pontificia Universitas, Rome

• M.S. Information Systems Management – Keller Graduate School of Management

• A.A. Computer Technology and Networking – Greenville Technical College

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