Jan Garaj's Email Addresses & Phone Numbers

Self-assessment of my strengths (the best is ★★★★★): ★★★★★ Server administration/support of Linux (RedHat, Debian, CentOS) - 2nd line DevOps support ★★★★★ Monitoring systems: Zabbix, Zenoss, OpenView, OVO, New Relic, Nagios ★★★★★ Performance tunning of LAMP stack: Apache (Nginx), PHP, MySQL ★★★★☆ Virtualisation with Citrix XenServer (VMware) ★★★★☆ Web developing with LAMP stack: Linux, PHP (CakePHP, Nette,...

Self-assessment of my strengths (the best is ★★★★★): ★★★★★ Server administration/support of Linux (RedHat, Debian, CentOS) - 2nd line DevOps support ★★★★★ Monitoring systems: Zabbix, Zenoss, OpenView, OVO, New Relic, Nagios ★★★★★ Performance tunning of LAMP stack: Apache (Nginx), PHP, MySQL ★★★★☆ Virtualisation with Citrix XenServer (VMware) ★★★★☆ Web developing with LAMP stack: Linux, PHP (CakePHP, Nette, Zend), MySQL (PostgreSQL) My DevOps technologies in playfield: Puppet, Asnible, Zenoss/Zenoss 5, MongoDB, Python, QlikView, Sencha, cloud Amazon Web Services - AWS, HP Performance Anywhere, New Relic, Apache Tomcat, ... Familiarized with technologies: scripting (bash, python, PHP, ...) , TCP/IP, svn, XML, Javascript (jQuery), Java, C, NetBeans, UML, phantomJS, NetApp, EMC, Jira, ... Knowledge of Content Management System (CMS): Wordpress, Joomla, Drupal, Umbraco. Highlight: • DevOps sector experience: ★ high volume, multi datacentre HA media websites (BBC) ★ with branded product healthcare web sites (GlaxoSmithKline) ★ with 2,5 millions real users per month on Linux/LAMP stack (Zoznam) ★ with mission critical Linux/Unix servers (Volkswagen) ★ with virtualization and monitoring project built from scratch (WIMC) ★ with deploying/inventoring/patching/configuring of server infrastructure by automation tools (Hewlett-Packard) • Development sector experience: ★ with GPS tracking backend/frontend system (WIMC) ★ with web multilevel marketing system for financial agents (Positive)DevOps in monitoring team @ • Development / operations / improvement of monitoring systems for all digital BBC products (web, broadcast TV/radio, streaming) and infrastructure (AWS cloud, CDN, dedicated servers, ….) • Monitoring of production environment: 900k+ datapoints, 2k+ devices, the busiest device 12k+ datapoints • Development of customized platform monitoring Zenoss ZenPacks: CPU utilization, HDD utilization, TCP states, forks, NTP synchronization, ... • Supported technologies: Zenoss, Python, Linux, bash, AWS, Puppet, Ansible, RabbitMQ, CDN, ... From February 2014 to June 2015 (1 year 5 months) London, United KingdomContract: Digital applications support @ • Agile support of digital activities (developement, testing, releasing, scripting) between brand department, digital agencies and DevOps server team • Focusing on North&East European markets and healthcare brands • Supported technologies: Java – JSP (Websphere), .Net, MS SQL, Oracle, Linux, CDN Akamai From April 2013 to August 2013 (5 months) London, United KingdomContract: UNIX 2nd line support specialist @ • Dedicated UNIX support for Volkswagen Slovakia (fixed project short-term agreement) • Standard 2nd line workload: scripting, daily checks/incidents, server migrations, investigation of network issues, monitoring • Incident and change management for HP-UX (also cluster), AIX, Red Hat (also cluster), Linux servers • Used/supported technologies: OpenView Performance Agent (OVPA), OpenView Operations (OVO), Asset Manager, HP Universal CMDB, Oracle, DB2, Ingress, Zabbix, Linux, EMC, NetApp From October 2012 to January 2013 (4 months) Tourist guide/transfer representative @ • Summer season job (no DevOps job): independent tour guide, tranfer representative for various travel agencies From July 2012 to August 2012 (2 months) Bulgaria, Sunny BeachContract: Server/Client Automation Support @ • Worldwide L1/L2 support/administration for server software (patch/inventory/software/deployment management, Hewlett-Packard equivalent of Puppet or Chef): - HP Server Automation (Opsware) - HP Client Automation (RADIA) • Monitoring, administration, scripting, operation/incident (DevOps) management on level L2 on assigned RADIA infrastructure (WIN/Linux) • Development utility for support guys based on HPSA Java API From November 2011 to April 2012 (6 months) DevOps coordinator @ • 2.5 millions real web users per month, agile in-house development • Responsibility for the availability, monitoring (Zabbix), site reliability and improvements of (physical, virtual) servers • Optimization of performance in App tier, DB tier (cache, indexes, MySQL, SQL queries) and server tier (Linux, Apache, nginx, memcache, Haproxy) • Engaging and management with third-party vendors of software, hardware and services, security reviews/standards • Concept for virtualization (cloud AWS) and automation (Puppet) of existing infrastructure • Developer for small DevOps - error handlers From December 2010 to September 2011 (10 months) Developer IT @ • Development and maintenance of information system for monitoring objects (vehicles, persons) based on GPS/GSM/GPRS technologies, frontend technology PHP (Zend framework) • Virtualization project (from scratch) based on Citrix XenServer – deployment and administration of hypervisor and virtual servers based on Linux (Debian, CentOS), FreeBSD, iSCSI storage QNAP • Administration of Linux/Windows servers, optimization of DB/SQL performance, monitoring tasks • Monitoring of servers with Zabbix server – developing Zabbix custom scripts From September 2009 to December 2010 (1 year 4 months) Representative of travel agency @ • Summer season job: representative of travel agency From June 2009 to August 2009 (3 months) Sunny Beach/Kiten, BulgariaSoftware Developer @ • PHP development of portals in firm CMS for presentation sites and web-shops • Optimization of sites for various browsers, designing of SQL databases • Analysis of customers' requests for sites and multilevel marketing functions • Implementation of functions for multi level marketing (MLM) servers From July 2005 to June 2009 (4 years) Web developer @ • PHP development of web sites with SQL databases • Base administration of app servers (Linux – Debian, PHP, MySQL, Apache, ...) From July 2004 to July 2005 (1 year 1 month) Master of Engineering (MEng), Software Engineering @ Slovak University of Technology in Bratislava From 2007 to 2009 Bachelor of Engineering (BEng), Informatics @ Slovak University of Technology in Bratislava From 2004 to 2007 Jan Garaj is skilled in: Zabbix, Zenoss, Monitoring, Docker, DevOps, Microservices, Kubernetes, Go, Linux, Linux System..., MySQL, Python, Apache, Amazon Web Services..., Ansible, Jenkins, System Administration, Unix, PostgreSQL, Web Development, XenServer, PHP, Subversion, SQL, Bash, CSS, JavaScript, Debian, Windows, HP Server Automation, Automation, Security, XML, jQuery, Java, ITIL, HP Client Automation, XHTML, HP-UX, Software Development, Programming, UML, Puppet, New Relic, HAProxy, Unix Shell Scripting, MongoDB, Nginx, Databases, Opsware