Angell Darzendas

Worked with the leadership team to improve wired and fiber network infrastructure, resulting in uptime of 99.99%. Monitor and optimize data center environmental metrics (power distribution, PDU loads, HVAC/cooling status) to ensure maximum hardware efficiency and prevent thermal/electrical overloads. Perform rigorous hardware troubleshooting and component replacement (RAM, CPU, drives, SFPs) in high-density environments, minimizing Mean Time to Repair (MTTR) and maintaining strict SLA targets. Setup of vari

Core Routing & Switching: Managed core network infrastructure and executed routing architectures utilizing dynamic protocols (BGP, OSPF) and MPLS, maintaining 98%+ backbone network availability. L2/L3 Troubleshooting & Fault Resolution: Diagnosed and resolved complex Layer 2/Layer 3 routing anomalies, IP addressing/subnetting schemes, and WAN circuit failures across Fiber DIA, Broadband, and Cellular backup links. Firewall & Security Administration: Configured security zones, access policies, and virtual fi

Enterprise High-Density Wi-Fi: Designed, deployed, and optimized full-lifecycle enterprise wireless environments (Ubiquiti UniFi, MikroTik) across multiple luxury hospitality sites, eliminating coverage dead-zones and delivering seamless roaming for 80+ concurrent guests and staff devices. Network Architecture & Segmentation: Engineered robust Layer 2/3 network topologies using VLAN trunking, Inter-VLAN routing, and Access Control Lists (ACLs) to strictly isolate guest traffic, administrative operations, PO

Core Network Overhaul & Upgrades: Successfully planned and executed full-scale hardware refreshes of core switches, routers, and firewalls across multi-property hotel operations, achieving zero downtime during high-occupancy operational hours. Multi-Property Infrastructure Management: Maintained high-availability network topology supporting concurrent luxury boutique hotels, ensuring continuous operation of critical services (Guest Wi-Fi, PMS, POS, IPTV, and VoIP). High-Density Enterprise Wi-Fi: Deployed, m

Infrastructure Design & Cabling: Designed and executed physical workspace setups, deploying enterprise-grade structured cabling (Cat6/Fiber), patch panels, rack mounts, and baseline server/network hardware across all corporate facilities and hotel branches. Linux Systems & Virtualization: Administered Linux servers and VM Hypervisors to support core network services (DNS, DHCP, NAS storage, local back-ups), ensuring high availability and optimal system resource allocation. Long-Range PtP Wireless Infrastruc

Broadband & Leased Line Diagnostics: Performed Level 1/Level 2 end-to-end troubleshooting and root-cause analysis for ADSL/VDSL broadband circuits, dedicated leased lines, and enterprise cellular data modems. Physical Layer & Copper Testing: Conducted physical layer diagnostics on PSTN/ISDN copper lines, utilizing specialized TDR/Fluke testing tools to identify line attenuation, noise faults, and physical signal degradation. SOHO & Enterprise CPE Deployment: Configured, deployed, and supported Customer Prem

Low-Latency LAN Optimization: Tuned network interface metrics, QoS queuing, and high-density L2/L3 switch configurations, reducing internal network latency by 25% to support high-throughput multiplayer gaming environments. Hardware Repair & Diagnostics: Performed component-level PC/Server hardware repairs, power supply troubleshooting, motherboard diagnostics, and system performance benchmarking. Virtualization & Software Deployments: Managed OS deployments, Paragon disk cloning, and local VM hypervisors to