Linux servers
Administration, service troubleshooting, patching, SSL/TLS, systemd, logs, and access issues.
Support team lead · Linux admin Thanh Nam Dao
I keep Linux infrastructure reliable, observable, and well-documented.
6+years in IT
Linuxadministration
RHCSAcertified
Homelaboperator
Opsmonitoring & troubleshooting
About
I keep systems reliable, observable, and understandable.
My homelab is where I test, break, fix, document, and learn.
I’m Nam, a Technical Support Team Lead and Linux Administrator based in Europe. I work across support operations, servers, networking, monitoring, and technical troubleshooting, and I use my homelab to keep learning beyond the job.
Whether I’m coordinating escalations, resolving production issues, or experimenting at home, my goal is the same: learn deeply, document clearly, and keep improving.
What I help with
Practical help for Linux hosting and support operations.
Clear troubleshooting, reliable operations, and documentation that makes systems easier to run.
Hosting operations
VPS and web-hosting incidents, DNS, connectivity, escalation handling, and customer-facing clarity.
Monitoring
Grafana dashboards, alert signals, incident analysis, and observable self-hosted infrastructure.
Documentation
Repeatable runbooks, clean handovers, and operational notes that reduce future confusion.
Skills
Practical infrastructure skills.
Grouped around the work I do most: systems, networks, operations, and self-hosted services.
Systems
Linux administrationWindows supportService troubleshootingTeam coordination
Networking
TCP/IPDNS basicsConnectivity debuggingRemote access
Operations
MonitoringIncident analysisSecurity standardsDocumentation
Homelab
Self-hosted servicesGrafana dashboardsPassword managementMedia/cloud services
Daily tools
Tools and platforms I work with.
Linux and web
RHEL / CentOSDebian / UbuntuNginxApachePHP-FPM
Operations
SSHsystemdDNSSSL/TLSBackups
Monitoring
GrafanaPrometheus-style metricsLog analysisAlert review
Automation
BashPython basicscronRunbooks
Experience
From first-line support to Linux leadership.
Technical Support Team Lead
Contabo GmbH · Prague, Czechia / Hybrid
Lead technical support work across Linux hosting operations, customer escalations, documentation, and day-to-day team coordination.
Team leadLinux hostingEscalations
System Administrator
Contabo GmbH · Prague, Czechia / Hybrid
Managed server operations, networking issues, monitoring signals, and security-minded troubleshooting for production services.
SystemsNetworksMonitoring
Linux Administrator
vshosting~ · Prague, Czechia
Maintained Linux infrastructure, investigated incidents, supported applications, and kept operational work documented and repeatable.
LinuxOperationsIncidents
Junior Linux Administrator
vshosting~ · Prague, Czechia
Built hands-on Linux operations experience across server maintenance, monitoring, access, and routine infrastructure support.
LinuxMaintenanceSupport
First Line Support Engineer
Atos IT Solutions and Services A/S · Prague, Czechia
Provided first-line user, device, and connectivity support through tickets, phone, remote tools, and clear handovers.
SupportTroubleshootingRemote tools
Certification
RHCSA — Red Hat Certified System Administrator
Validated core Red Hat Enterprise Linux administration skills, including system management, users, storage, services, and troubleshooting.
Homelab
Command center.
Private infrastructure for learning and public projects I operate or support.
Private infrastructure
Nextcloud
Private cloud and file sync. Login surface intentionally not linked publicly.
Private servicePassword vault
Self-hosted credential management for safer access habits.
Private serviceMonitoring
Dashboards and observability for systems, uptime, and troubleshooting.
Private serviceDomain mail access and administration kept private.
Private servicePublic projects
JoyBeauty
Beauty booking and salon website.
Open JoyBeauty →Lumi Beauty
Beauty salon website and booking presence.
Open Lumi Beauty →Majka Beauty
Beauty salon website and booking presence.
Open Majka Beauty →Wow Asian Market
Asian market storefront and product catalog.
Open Wow Asian Market →Case studies
Selected work patterns.
Homelab monitoring
Built private dashboards to learn observability, detect service problems, and improve troubleshooting speed.
GrafanaMetricsRunbooks
Public website operations
Operate small business websites with HTTPS, nginx, backups, deployment hygiene, and production verification.
NginxSSLBackups
Storefront catalog
Maintain product/catalog flows, admin surfaces, and order handling for a public market website.
CatalogAPIEmail orders
Currently exploring
Infrastructure automationBetter alertingSecure self-hostingAI-assisted operations
$ sudo open command-center
Safety demo. Try the forbidden command: