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

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

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

AD/GPO documentation checklists and maintenance notes available.

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

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

• Helped migrate Lotus Notes → Zimbra (ClubCorp); maintained and later consolidated Exchange environments (Yu, South & Associates; Dallas Computer Techs).

Change logs and migration notes available on request.

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

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.

• 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.

Sanitized backup job configs, restore test logs, and DR checklists available on request.

HTML, CSS, PHP; LAMP (Linux, Apache, MySQL, PHP); Joomla; WordPress.

Site builds and CMS setup, theme/plugin customization, responsive layouts, basic MySQL work, and performance tuning for small business sites.

• Built web-based workflow software at OTF Foods to replace paper processes; generated executive reports via Jasper.

See Portfolio for live examples; additional screenshots available on request.

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

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

• Deployed core network systems and required servers at OTF Foods to enable day-to-day operations.

Sanitized network diagrams/configs available upon request.

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

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

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

Before/after recovery notes available on request.

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

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

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

References and testimonials available.

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

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

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

Representative scripts available on request (sanitized).

• 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.

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.

• 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.

Representative dashboards, alert rules, and SNMP profiles available (sanitized) on request.