Networking
Cisco Firewalls (FMC/FTD), SD-WAN, VPN (including hairpinned / high-availability), VLAN,
ACL, OSPF, BGP, TCP/IP, DHCP, DNS, LAN/WAN, Meraki, Wireshark
Cloud & Infrastructure
Azure Administration, Azure AD, Azure IaaS, ARM Templates, Azure Resource Manager, Cloud
Networking, Load Balancing, Hyper-V, on-prem server rooms
Security
Network Security, Endpoint Security, Identity & Access Management, Encryption, Log
Analysis, Threat Mitigation, vulnerability audits
Containers & Orchestration
Docker (multi-arch builds, read-only hardening, rootless), Kubernetes, Talos Linux,
ArgoCD (GitOps), Longhorn, Prometheus, Grafana, Node Exporter, Helm
CI/CD Pipelines
GitHub Actions (matrix builds, OIDC, scoped PATs, image retention), multi-arch image
publishing to GHCR and Docker Hub, semantic-version tag policies, lint-and-build gates
Reverse Proxy & Web
nginx (incl. nginx-unprivileged, read-only root filesystem hardening), Caddy, static-site
delivery, Astro / Vue 3 frontends, TLS termination, header-based routing
Agentic & AI Infrastructure
Built Lethe
— a persistent memory layer for AI agents (Go + SQLite + SSE). OpenClaw plugin
development, sub-agent orchestration, prompt and tool-design, deterministic and
LLM-driven benchmark harnesses (HOTK-Bench, knowledge-transfer runs)
Automation & Scripting
PowerShell, Bash, Go, Vue 3 / TypeScript, REST and WebSocket APIs, cron / LaunchAgent
scheduling, SOP-grade documentation
Systems
Windows Server, RHEL, Ubuntu, Alpine, VMware, Virtualization, Active Directory, Office
365, Google Workspace, Microsoft 365
Other
SD-WAN, Universal Print, SQL, Leadership, Mentoring, Capacity Planning, SOP
Documentation