Bogumil Stoinski

· leading migration of Linux servers to a new cloud infrastructure · development of universal Apache Tomcat web application platform · development and maintenance of Linux Golden Images · implementation of global metrics and monitoring system based on Telegraf and Grafana

· senior advisory position in a worldwide migration of >50k servers project · develop, implement and execute annual patching plan for >4000 servers · implement automatic security policy violations cleanup for all Unix servers · provide professional Linux trainings for junior employees of the whole GSDC Katowice · act as a focal point for “unsolvable” cases concerned on Linux

· installation/customization and upgrades of Red Hat/CentOS systems · administration of Zabbix enterprise-grade monitoring infrastructure · implementation and administration of SaltStack automation solution · intermediate administration of VMware infrastructure · providing Linux trainings and guidance for junior team members

· installation/maintenance and upgrades of Red Hat/CentOS systems · implementation of Spacewalk server which is an Open Source version of Red Hat Satellite Server · installation, maintenance and troubleshooting of mobile payments application written in Java · installation, maintenance and performance tuning of MySQL databases · building RPM packages from sources provided by developers · maintenance of OpenVPN servers

· 3rd line focal point for all Red Hat products, mainly Enterprise Linux ans Satellite Server · assuring the continuity of critical banking applications · design and implementation of new solutions for Red Hat platform · performance monitoring · security monitoring · backup standards · 24/7 on-call rota · systems Errata patching and upgrades · security standards implementation · testing of High Availability and Disaster Recovery procedures

· cooperation with B2B Sp. z o.o. as Head of IT - the biggest polish Red Hat Authorized Distributor, Training Partner and Jboss Training Partner · delivering trainings and conducting exams from RHCT, RHCE and RHCA paths · complex design, implementation and support of Red Hat products for government, public and financial sector · responsible for introducing new Open Source products to the polish market

· installation and maintenance of SUN/Oracle Solaris · migration of UNIX platform operating systems to Red Hat Enterprise Linux

· resolving complex issues and supporting customer requests concerned on Apache, PHP, MySQL, Plesk, sendmail, Postfix, qmail, user management, system patching, security, performance tuning, etc. · serving as an escalation point for lower level support technicians and/or escalate tickets upwards as needed · troubleshooting and performance tuning of MySQL database servers and Apache web servers · handle overflow of customer support phone calls/requests according to ITIL standards

· delivering all the Red Hat courses up to RHCE level (RH033, RH133, RH145, RH184, RH253, RH300) · delivering courses from RHCA certification path · conducting exams RH133 and RH300 · delivering courses concerned on administration of UNIX operating systems and shell scripting

· responsible for all technical aspects and partially facilities ones of opening the Czech branch of Red Hat company · maintenance of Red Hat Linux servers (member of Global Information Systems team, setting up new servers, maintenance of existing ones, troubleshooting, performance tuning, hardware maintenance) · setup and maintenance of badge security system (Group4 Securitas software) · setup and maintenance of Dell hardware – servers, workstations, notebooks and printers

· administration of UNIX servers – mainly IBM AIX (security, users maintenance, services, backup, basic SAP servers management) · maintenance of Tivoli storage and backup solutions · direct contact with customers, 2nd level support

· installation and administration of GNU/Linux and *BSD systems · implementation of author’s automatic network backup system based on client-server architecture · servers and workstations maintenance · maintenance and provisioning of network infrastructure · implementation of system preventing making any changes in working operating systems in classes, libraries and reading rooms · deisgn, development and implementation of new university website

· administration of GNU/Linux Debian systems (www, mail, file and fax servers) · maintenance of DSL lines (based on Lucent Cell Pipe devices) · implementation of integrated telemarketing system