David A. O.

Background

About David A. O.

Experienced IT Professional with over 5 years of comprehensive IT experience. I specialize in managing, optimizing, and securing IT infrastructure to ensure high availability, reliability, and performance. My expertise spans systems operations, unified communications, network engineering, IT service management, and WordPress infrastructure — delivering robust and scalable solutions that support business continuity and growth. Core Competencies: 1. Systems & Infrastructure Operations: Administration, monitoring, and optimization of IT infrastructure including servers, network devices, VoIP/UC systems, virtualization platforms, and cloud services. Skilled in patch management, system upgrades, security hardening, performance tuning, and virtualization deployment and maintenance. Unified Communications & VoIP: Deployment and support of UC platforms (3CX, Wildix, Xorcom, VitalPBX, Dinstar, FreePBX, Yeastar, X-bees) with a focus on security, system reliability, high availability, call routing, and SIP trunk management. Network Engineering: Designing and managing secure LAN/WAN networks, fiber optic installation, troubleshooting, and ensuring network resilience. IT Service Management: Applying ITIL best practices to streamline incident management, problem management, change management, service level management, availability management, asset management and service delivery processes. WordPress Infrastructure Management: Maintaining secure, high-performing WordPress websites including performance tuning, security patches, and content workflows.