System Administrator Network Security

AYAMBA AYUK

Network/System Administrator

Profile

Results-driven and detail-oriented Network and System Administrator with over three years of hands-on experience in managing, configuring, and maintaining enterprise IT infrastructures. Proficient in network architecture, server administration, virtualization, network security and cloud services. Adept at ensuring optimal system performance, high availability, and disaster recovery. Strong problem-solving skills and a proactive approach to IT challenges.

Employment History

Network and System Administrator at Capital Care Inc, Silver Spring

March 2022 — Present

• Designed and deployed a scalable hybrid cloud solution integrating on- premises infrastructure with AWS.

• Upgraded legacy network equipment and implemented a redundant topology to enhance fault tolerance.

• Oversaw domain controller upgrades and migrated Active Directory from Windows Server 2012 to 2019.

• Configured and monitored firewalls, IDS/IPS, and VPNs to ensure secure and compliant network traffic.

• Automated routine maintenance tasks using PowerShell, improving operational efficiency by 35%.

• Implemented centralized monitoring and alerting tools (Nagios,) reducing downtime response time by 50%.

• Provided Tier 3 support and mentored junior IT staff on best practices and troubleshooting techniques.

• Maintained enterprise-wide IT infrastructure across 5 office locations.

• Deployed VMware ESXi environment hosting critical business applications and databases.

• Supported Microsoft Exchange, file servers, print services, and remote desktop services.

• Introduced centralized patch management and antivirus solutions, significantly reducing security risks.

• Assisted in network segmentation and VLAN implementation to enhance security posture.

• Created detailed documentation for configurations, policies, and system procedures.

Details

240-***-****

************@*****.***

Skills

Network Infrastructure

Management (LAN/WAN)

Windows & Linux Server

Administration

Virtualization (VMware,

Hyper-V)

Firewall & Security Appliance

Configuration (Cisco ASA)

Cloud Services (AWS, Cloud)

Active Directory, DNS, DHCP,

GPO

Backup & Disaster Recovery

(Veeam, Acronis)

Scripting (PowerShell, Bash)

Monitoring Tools (Nagios)

IT Support Engineer (Junior Admin Role) at Emotech, Buea January 2018 — April 2020

• Assisted in the deployment and troubleshooting of network devices including routers, switches, and wireless access points.

• Supported end users in resolving hardware, software, and connectivity issues.

• Documented system configurations, standard operating procedures, and user manuals for technical teams.

• Provided support during server upgrades, migrations, and patch installations.

Education

Advanced Diplomat In Network and Network Security, Network Bulls, New Delhi, India

January 2017

IT Essential, Empowerment Cisco Academy, Buea Cameroon

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