• Active Directory & Group Policy
• DNS, DHCP, NTFS permissions

Microsoft Servers — Details

Tools & Tech

Windows Server; Active Directory; Group Policy; NTFS permissions; DHCP; DNS.

Depth

Domain controller deployment and hardening, GPO design, permission audits, backup/restore, and lifecycle maintenance.

Notable Wins

• Maintained Exchange 2010 and DCs, then migrated Exchange/DC/Desktop workloads to Linux where appropriate (Yu, South & Associates).

• Exchange (on‑premises) & Office 365
• Mailcow, Zimbra (open source)

Email Servers — Details

Tools & Tech

Microsoft Exchange (self-hosted), Office 365, Zimbra, MailCow.

Depth

Mailbox provisioning, transport rules, anti-spam/anti-malware, SSL/TLS, backups, and migration support (on-prem ⇄ cloud and cross-platform).

Notable Wins

• Maintained and later consolidated on Multi-Tenant Exchange Environments (Yu, South & Associates; Dallas Computer Techs, and many more).

• VMware (vSphere/ESXi)
• A plethora of backup solutions for VMs

Virtualization & Backup — Details

Tools & Tech

VMware (vSphere/ESXi); various backup systems such as AhsayOBM, Backup Exec, and open-source equivalents.

Depth

Host and VM provisioning (CPU/RAM/storage layout), datastore planning, snapshots, scheduled image-level backups, retention tuning, integrity checks, and restore tests. Disaster-recovery runbooks and RPO/RTO alignment for SMB environments.

Notable Wins

• Implemented VM backups and recovery across all virtual machines in a VMware environment at Yu, South & Associates.
• Owned disaster-recovery planning and execution for SMB clients at Dallas Computer Techs.

• Routers, switches, wireless APs
• SonicWall & Untangle security appliances

Network — Details

Tools & Tech

Routers, switches, wireless APs; security appliances including SonicWall and Untangle.

Depth

SMB network design, DHCP/DNS, Wi-Fi rollout, firewall/content filtering, remote access, and steady-state monitoring practices.

Notable Wins

• Deployed core network systems and required servers at many managed services clients to enable day-to-day operations.

• Troubleshooting servers, networks, and PCs
• Malware removal & performance tuning

Diagnostics — Details

Tools & Tech

Sysinternals tools, Malwarebytes, Windows Recovery, SMART/memory testing, Linux rescue media.

Depth

Root-cause analysis for performance issues, malware cleanup, data recovery, and complex server/PC troubleshooting across mixed environments.

Notable Wins

• Took the lead on disaster recovery planning and execution for multiple SMB clients (Dallas Computer Techs); broad break/fix experience (Freelance).

• 30+ years of friendly client support
• Clear documentation & ticketing

Customer Service — Details

Focus

Service with a smile—clear communication, expectation setting, and thorough documentation.

Depth

Experienced supporting users across enterprise and SMB; efficient ticket triage, escalation, and follow-through.

Notable Wins

• 30+ years of friendly client support across help desk, desktop support, and systems administration roles.

• PowerShell & Bash for admin tasks
• Repeatable workflows (AD/O365, backups)

Automation & Scripting — Details

Tools & Tech

PowerShell and Bash; scheduled tasks/cron; light REST/CLI tooling.

Depth

Automating routine admin tasks (onboarding, AD/O365 updates, backups), recurring maintenance, and report generation to improve reliability and speed.

Notable Wins

• Reduced manual ticket handling by scripting repeatable workflows; aligned with your focus on automation from your professional summary.

• Uptime & service health checks
• Log review & alerting practices

Monitoring & Observability — Details

Tools & Tech

• Zabbix — agent & agentless checks, SNMP/JMX/IPMI, auto-discovery, DB-backed server.
• Cacti (what you referred to as “cactusnpm”) — SNMP polling with RRDTool for graphing (classic NMS-style trending).
• Prometheus — pull-based time-series DB with exporters & PromQL for metrics.
• Grafana — visualization layer for Prometheus/InfluxDB/Graphite, alerting via contact points.
• Icinga/Nagios — plugin-based active checks, NRPE/agent support, notification workflows.
• LibreNMS/OpenNMS — SNMP-driven network monitoring, auto-discovery, maps.
• Netdata — per-node collectors using eBPF/procfs, real-time dashboards.

Depth

Design and deploy multi-tool monitoring: endpoint agents where needed, SNMP for network gear, Prometheus exporters for services, and Grafana for unified dashboards. Tune alert thresholds, silence policies, and escalation chains. Track SSL expiry, HTTP health, disk/CPU/mem, service latencies, and backup job results. Document runbooks for consistent on-call response.

Notable Wins

• Consolidated ad-hoc checks into unified dashboards with actionable alerts (reduced noise, improved MTTR).
• Added SNMP discovery of switches/APs and baseline graphs to catch regressions early.