Architect & DevOps Engineer & Lead Engineer & Linux Administrator & Team Leader

Inžinier s 12-ročnými skúsenosťami v oblasti Linuxu, ktorý je v súčasnosti zodpovedný za správu 3000 serverov s rôznymi operačnými systémami vrátane Oracle alebo Solaris. Spravuje tiež databázy, ako sú OracleDB, MySQL, PostgreSQL, Couchbase, MongoDB a Redis, a administruje rôzny všeobecný softvér vrátane Apache, Nginx, Tomcat, Jboss/Wildfly, RabbitMQ. Od základov vytvoril Check_mk na monitorovanie a novú SMS bránu. Spravil monitorovanie a nastavenie z 30 hovorov denne na maximálne 1 hovor týždenne. Nastavil a spravoval aj nástroje na automatizáciu a orchestráciu, ako sú Puppet, Foreman, SaltStack a Ansible. Vykonal nasadenie pomocou programov Puppet a SaltStack. Okrem toho pracoval s nástrojmi Attlasian, ako sú Jira, Confluence, Bitbucket, a nastavoval pipelines z Bamboo na automatizáciu vytvárania obrazov systému. Je zodpovedný za nastavenie interného repozitára. V spoločnosti majú dva Open Stacks, poskytuje podporu a spravuje obrazy pre tieto inštancie Open Stacks a virtuály. Má skúsenosti s webovými servermi, kde lokálne čistil požiadavky proxy serverov aplikácií. Čo sa týka iných automatizačných rámcov, v minulosti pracoval s Rundeckom v starej verzii. Pozná Prometheus a Grafana. Skúsenosti má predovšetkým so skriptovacím jazykom Perl, ale pracoval aj s jazykom Bash. Je zvyknutý pracovať v prostredí Kanban. V rámci svojej súčasnej úlohy vedie tím 7 ľudí. Hovorí plynule anglicky a nemecky.

5/2018 to present Product Owner/Teamlead Infrastructure Unix/Linux and previously, Interim Product Owner/Teamlead Infrastructure Unix/Linux.

• managed a team of 8 people responsible for administering Unix/Linux infrastructure in an agile DevOps/SRE environment.
• oversaw the administration of approximately 3000 servers using Oracle and RedHat Linux, Solaris, FreeBSD, VMware ESXi, VMware Tanzu, OracleVM, Solaris zones, Solaris LDOMs, and Xen virtualization technologies.
• managed databases including OracleDB, MySQL, PostgreSQL, Couchbase, MongoDB, and Redis.
• responsible for general administration tasks, including monitoring using Nagios and Check_mk, and managing various applications like Apache, Nginx, Tomcat, Jboss/Wildfly, RabbitMQ, Exim, and Postfix MTA, SMS, and mail relay.
• managed Radware, HAProxy, and Relayd load balancers, as well as set up and managed automation and orchestration tools like Puppet, Foreman, SaltStack, and Ansible. Also managed repositories for Linux (Spacewalk, RedHat Satellite), Solaris, and FreeBSD.

7/2011 – 10/2013 Senior System Administrator

• administering approximately 2000 servers, using Debian GNU/Linux and virtualization technologies such as Openvz, Lxc and KVM
• managing web servers like Apache, Nginx, Tomcat, and Lighttpd
• database administration, including MySQL, PostgreSQL, SQLight, and Redis no-sql
• management of Memcache and Couchbase
• management of Cisco Catalyst and Nexus switches, and implementation of Cisco ACLs for network security
• DNS administration through PowerDNS and Bind
• management of BigIP F5 and LVS Loadbalancers
• developing and administering a CDN (content delivery network) and live streaming concerts of Krystof and Tatabojs.

6/2004-3/2011 Senior IT Manager and IT Coordinator

• administering over 100 Microsoft Windows workstations and IBM AIX servers, as well as managing mobile and data line contracts and licenses
• providing user support and IT courses/lectures to employees in Czechia, Romania, and Russia
• managing and executing various hotel projects across different countries, including the Hotel ibis Praha Old Town and the Hotel Mercure Paris Porte de St. Cloud
• acting as a project manager for hotel management system changes and new hotel setups, such as the Hotel Mercure Ostrava Center and the Hotel ibis Plzen
• setting up central reservations and sales offices and a regional Accor office in Czechia and Russia, respectively
• implementing a reservations system in hotels Novotel City Center and Novotel Sheremetyevo Airport in Moscow.