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

A 12 years experienced Linux Engineer, who is currently responsible for administering 3000 servers running on various operating systems including Oracle or Solaris. He also manages databases such as OracleDB, MySQL, PostgreSQL, Couchbase, MongoDB, and Redis, and administers various general software including Apache, Nginx, Tomcat, Jboss/Wildfly, RabbitMQ. He set up from scratch Check_mk for monitoring, and a new SMS gateway. He fixed monitoring and setup from 30 calls per day to 1 call max per week. He also set up and administered automation and orchestration tools such as Puppet, Foreman, SaltStack, and Ansible. He has done deployment by Puppet and SaltStack. Apart from that, he worked with Attlasian tools such as Jira, Confluence, Bitbucket and set pipelines from Bamboo to automate the creation of the system images. He is responsible for setting up an internal repository. They have two Open Stacks at the company, he provides support and manages the images for those Open Stacks instances and virtuals. He has experience with web servers where he proxied to application servers clean requests locally. As for other automation frameworks, he worked with Rundeck in an old version in the past. He is familiar with Prometheus and Grafana. He is primarily experienced in Perl scripting language but also has been working with Bash. He is used to working in a Kanban environment. As part of his current role, he is leading a team of 7 people. He speaks fluent English and German.

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.