Linux Administrator

Systemadministrator mit einer Leidenschaft für Open-Source-Technologie, erfahren in der Verwaltung hochverfügbarer Systeme und der Implementierung von Technologien wie Load Balancer, Clustering und Replikation. Kompetent in der Arbeit mit Debian, Nginx, ZFS, Proxmox VE und Podman. Beherrscht die Fehlerbehebung bei Dateisystemen, die Einrichtung von VPNs und DNS-Servern sowie die Containerisierung von Anwendungen. Ausgeprägte Erfahrung in der Notfallwiederherstellung und Vertrautheit mit Zabbix-Überwachung und Ansible-Konfigurationsmanagement.

07/2023 – CURRENT Linux System Administrator

• Deployed and maintained highly available Linux clusters running in-house tomcat-based applications
• Worked with VMware and Proxmox virtualization
• Installed and configured server and networking hardware
• Assisted internal development teams in optimizing applications
• Introduced monitoring and improved existing monitoring mechanisms
• Provided advanced technical support onsite and to customers

07/2017 – 10/2021 Linux System Administrator

• Deployed highly available clusters utilizing LAMP and LEMP stacks, including Redis in the form of KeyDB
• Implemented ZFS with replication and failover in clusters to reduce the risk of data loss or system failure
• Assisted with implementing Ansible playbooks to streamline processes and reduce errors
• Containerized old apps using Podman to lower maintenance burden
• Improved security by adding features to in-house firewall and Xen virtualization solution
• Wrote documentation and instructions for possible disaster recovery

01/2019 – CURRENT UTest Tester

• Participated in test cycles for localization and payment testing
• Tested mobile apps, websites, and desktop apps on multiple platforms
• Provided image and video documentation of testing
• Submitted detailed bug reports

07/2016 – 12/2016 Mobile Phone Repair Technician

• Repaired and refurbished phones, occasionally performed improvised low-cost IC reflow
• Conducted quality control checks on phones for the second-hand market
• Provided technical customer support and processed warranty claims
• Unlocked android phones with forgotten Google accounts
• Modified imported phones to work in the local market