Systems
Server administration, service troubleshooting and patching. Linux infrastructure and Windows support.
RHEL / CentOS · Debian / UbuntuWindows / systemd / SSH
Linux administration / support leadership
Reliable, observable, well-documented Linux infrastructure.
I’m Thanh Nam Dao — Linux Administrator & Technical Support Team Lead at Contabo GmbH.
Linux administrationHosting operationsMonitoringDocumentationSupport leadership
Infrastructure is a people business.
6+
years in IT
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.
$ system-info
- USER
- Thanh Nam Dao / Cebatcheo
- LOCATION
- Europe · work location: Prague
- ROLE
- Linux Administrator / Technical Support Team Lead
- FOCUS
- Linux / hosting / TCP-IP / monitoring / support operations
- CERT
- RHCSA · 2020–2023 · historical credential
- EXPERIENCE
- 6+ years in IT
The work. The tools.
Practical help for Linux hosting and support operations, from the first symptom to a clear handover.
Web-hosting
Nginx, Apache and PHP-FPM. VPS and web-hosting incidents, DNS basics, SSL/TLS, escalations and clear customer communication.
Nginx / Apache / PHP-FPMVPS / DNS / SSL/TLS
Networking
TCP/IP, DNS basics, connectivity debugging and remote access. SSL/TLS and access troubleshooting.
TCP/IP / DNS / SSHSSL/TLS
Monitoring
Grafana dashboards, Prometheus-style metrics, log analysis, alert review and incident analysis.
GrafanaPrometheus-style metrics
Automation
Bash, Python basics and cron. Repeatable runbooks, clear handovers and operational notes that reduce future confusion.
Bash / cronPython basicsRunbooks
Operations
Team coordination, customer escalations, incident analysis, security standards and documentation. Clear handovers and customer communication.
Team coordination / escalationsBackupsRunbooks
Built through hands-on work.
July 2024–Present
Contabo GmbH
Technical Support Team Lead
Prague, Czechia / Hybrid
Lead technical support work across Linux hosting operations, customer escalations, documentation, and day-to-day team coordination.
December 2023–July 2024
Contabo GmbH
System Administrator
Prague, Czechia / Hybrid
Managed server operations, networking issues, monitoring signals, and security-minded troubleshooting for production services.
November 2022–December 2023
vshosting~
Linux Administrator
Prague, Czechia
Maintained Linux infrastructure, investigated incidents, supported applications, and kept operational work documented and repeatable.
July 2021–November 2022
vshosting~
Junior Linux Administrator
Prague, Czechia
Built hands-on Linux operations experience across server maintenance, monitoring, access, and routine infrastructure support.
October 2018–June 2021
Atos IT Solutions and Services A/S
First Line Support Engineer
Prague, Czechia
Provided first-line user, device, and connectivity support through tickets, phone, remote tools, and clear handovers.
RHCSA2020–2023
Red Hat Certified System Administrator
Validated core Red Hat Enterprise Linux administration skills, including system management, users, storage, services, and troubleshooting.
Certification period: 2020–2023. Listed as a historical credential, not a claim of current certification.
Verify certificate 200-124-535 →A lab for real-world learning.
My homelab is where I test, break, fix, document, and learn. Private services stay private.
Private cloud and media services, password management, backups and observable self-hosted infrastructure.
Private homelab
Learn / operate / document
Nextcloud
Private cloud and file sync. Login surface intentionally not linked publicly.
Password vault
Self-hosted credential management for safer access habits.
Grafana
Dashboards and observability for systems, uptime, and troubleshooting.
Domain mail access and administration kept private.
Public-facing. Carefully operated.
Small business websites I operate or support. Public previews, with private infrastructure kept off the page.
JoyBeauty
Visit websiteBeauty booking and salon website.
Modern Nails & Spa
Visit websiteBeauty salon website and booking presence.
Majka Beauty
Visit websiteBeauty salon website and booking presence.
Wow Asian Market
Visit websiteAsian market storefront and product catalog.
How the work comes together.
Homelab monitoring
- Problem
- Private services need visibility when something goes wrong.
- Approach
- Build private dashboards to learn observability and detect service problems.
- Technology
- Grafana / metrics / runbooks
- Result
- Private dashboards for service visibility and troubleshooting practice.
Public website operations
- Problem
- Small business websites need ongoing operational care.
- Approach
- Operate HTTPS, backups and deployments, then verify production.
- Technology
- Nginx / SSL / backups
- Result
- Public websites operated with deployment hygiene and production verification.
Storefront catalog
- Problem
- A market website connects products, administration and order handling.
- Approach
- Maintain product and catalog flows, admin surfaces and order handling.
- Technology
- Catalog / API / email orders
- Result
- Maintained catalog and order-handling workflows for a public market website.
$ currently-exploring
Currently exploring
- Infrastructure automation
- Better alerting
- Secure self-hosting
- AI-assisted operations
Prefer the command line?
An optional portfolio guide. Predefined responses only; no shell, no server access.
Leave a small trace.
An interactive experiment about shared history and uncertainty. A click adds one to the shared counter.
Let’s build reliable systems.
$ get-contact
Linux infrastructure, hosting operations, or a technical challenge worth understanding. Let’s talk.
[email protected]