Mohamed Ismail M.

I am a Network and Infrastructure Engineer with 20+ years of hands-on experience supporting MSPs, ISPs/WISPs, data centers, hosting providers, and enterprise environments. My work spans network engineering, infrastructure operations, NOC/SOC support, monitoring, virtualization, Linux/Windows systems, and security operations. Zabbix is one of my strongest specialties, but my experience goes well beyond monitoring. I work directly with the infrastructure being monitored and troubleshoot across network, server, virtualization, cloud, database, and security layers. NETWORK & INFRASTRUCTURE ENGINEERING My networking experience includes: • BGP / MP-BGP, OSPF, MPLS, VRF, route redistribution and path selection • Cisco, MikroTik, Ubiquiti, Aruba and mixed-vendor environments • VLANs, inter-VLAN routing, NAT, DHCP, DNS and VPNs • Multi-WAN, failover, redundant connectivity and cellular backup • ISP/WISP and multi-site network operations • Firewalls, network security and troubleshooting • Network migrations, planned changes and incident resolution Before freelancing, I worked in ISP environments supporting enterprise MPLS networks. My later MSP and WISP work has involved large distributed networks, customer infrastructure, wireless networks and highly available connectivity. INFRASTRUCTURE & SYSTEMS I work across: • Linux and Windows Server • VMware / vCenter and Proxmox • Microsoft Active Directory, DNS, DHCP and Microsoft 365 • Azure and AWS infrastructure • PostgreSQL and MySQL • Docker and containerized services • NGINX, Apache and IIS • Cloudflare, reverse proxies and secure remote access • Backup, migration, patching, hardening and performance troubleshooting I regularly troubleshoot issues that cross multiple layers, for example application → server → database → virtualization → firewall → routing → WAN. ZABBIX / NOC MONITORING I have designed, migrated, rescued, scaled and maintained more than 25 Zabbix environments. My experience includes: • Zabbix Server and Proxy architecture • Distributed and multi-tenant monitoring • Agent / Agent 2, SNMP, HTTP, API and custom-script monitoring • Custom templates, LLD, preprocessing and dependent items • Trigger engineering, dependencies and alert suppression • SLA and availability monitoring • PostgreSQL/MySQL performance optimization • Grafana integration and customer dashboards • Zabbix API automation • MSP customer isolation and access control • Monitoring migrations from PRTG, LibreNMS and other platforms One MSP environment I supported covered more than 80 customer organizations. I have also worked on an ISP/WISP monitoring platform that grew beyond 2,000 monitored hosts, including MikroTik and Ubiquiti infrastructure, wireless radios, CPEs, BGP peers, links and network services. NOC / SOC & SECURITY OPERATIONS I also work with: • Wazuh SIEM/XDR • Grafana and Prometheus • Security monitoring and incident investigation • Vulnerability detection and remediation • Log analysis • Custom Wazuh decoders and rules • File Integrity Monitoring • Security Configuration Assessment • Infrastructure hardening • Root-cause analysis and incident response My operational approach is: Detect → Investigate → Resolve → Validate → Prevent recurrence MSP / OPERATIONS EXPERIENCE I have supported: • Multi-tenant MSP infrastructure • Data centers providing IaaS and SaaS • ISP/WISP networks • Hosting providers • Multi-site organizations • Microsoft 365 / Azure environments • Business-critical production infrastructure I am comfortable working independently or as an extension of an existing engineering team, handling L2/L3 escalations, planned changes, migrations, troubleshooting, documentation and long-term infrastructure support. I am particularly interested in ongoing engagements involving Network Engineering, Infrastructure Engineering, NOC / Network Operations, MSP Infrastructure Support, Zabbix / Monitoring Engineering, Systems Administration, Infrastructure Reliability and Wazuh / Security Monitoring. If your infrastructure or network environment is unstable, difficult to monitor, poorly documented, generating excessive alerts, or needs experienced ongoing engineering support, I can assess the environment and help build a practical path forward.