Internal tools, infrastructure automation.

We are currently support production infrastructure, including rolling updates, incident management and various kinds of support. The entire production system is being improved day by day with the help of our team. I'm responsible for recurrent procedures, continuous integration and continuous delivery for internal and public web applications. Also in my responsibilities included intra-team support with specified service level agreements. Technologies: linux, weblogic, gcp, jenkins, bamboo, terraform, ansible, packer, gke, argocd, atlassian, python

Heavily NDAed

The team was maintaining multiple long-term projects. The products are intermediate components that are essential for other teams in order to use cloud infrastructure and comply with various corporate policies. Work includes maintaining existing components, developing new features and supporting other teams. I've been responsible for integrating new tools and modules with existing CI/CD process, developing and maintaining Jeknins Groovy shared libraries and pipelines, upgrading outdated components. Technologies: 
 linux, redhat, rhel, python, bash, gcp, jenkins, groovy, terraform, ansible, allure, mysql, vmware, vsphere, openshift, packer, pytest

The employer has a medium sized infrastructure, distributed and redundant. Certain services and components have existed for many years and the environment never changed. This kind of infrastructure requires a lot of attention. Developing and introducing new features and services requires an extra effort to keep existing components up and running. I've been responsible for supporting servers with processes of domain name registrars, exploring undocumented legacy processes and then maintaining them, improving infrastructure and various software components. Technologies: 
 CentOS Linux, KVM, LXC, Bash, Python, Go, Perl, Puppet, Jenkins, Grafana, Icinga, Nagios nginx, LUA, Bacula, LDAP, MySQL, PowerDNS, Supermicro, Adaptec, 3com, HP, Verisign, Afilias, EPP, OT&E, Net::DRI, VNDS, TLD

Outsource company with its own product in the telematic services field. As a start-up didn’t have any kind of organised infrastructure at the beginning, but has been growing over the years and ended up having a distributed private infrastructure with various environments. I have been responsible for organising work process of the IT department, writing technical specifications for projects, communication with the clients, team leading. Technologies: 
 CentOS/RHEL Linux, KVM, ESXi, LXC, Bash, Python, Django, Jenkins, Fabric, Puppet, Git, Asterisk, Postfix, dovecot, OpenLDAP

Being a start-up, the company has grown from one server at one location serving only several private clients to multiple networks and distributed infrastructure with both private and business clients. As an internet service provider, the company had to comply with the law and maintain extra components required by the government. I've been responsible for designing, supporting, scaling network and servers infrastructure, incorporating new functions the service could provide, technical leading. Technologies: 
 Linux, FreeBSD, python, bash, perl, php, poptop, accel-pptp, mpd5, dnsmasq, bind, powerdns, vsftpd, ftfpd, ntpd, apache, nginx, vsftpd, mysql, postfix, dovecot, dbmail, cisco, dlink, 3com, hp, mikrotik, asterisk, Kamailio, OpenLDAP, freeradius

An international company had been developing an application server working on VDOM Technology. Several production ready business applications were available as on-premise solutions and needed to be adapted for cloud. I've been responsible for supporting, expanding, improving existing infrastructure, building VMWare and KVM based hypervisor clusters, developing and maintaining a backup system for VDOM applications. Technologies: 
 CentOS, RHEL, TinyCore Linux, VMware ESXi, KVM, named, dhcp, vsftpd, python, bash, perl, VDOM

A small infrastructure of a federal nature reserve has been evolving from four workstations with no internet access to dozens of workstations and multiple servers providing access to internal applications. Constant growth led to mixed infrastructure with components from late 90s through current times which required some extra work to keep everything working together. I've been responsible for supporting Windows based workstations, AD service, and FreeBSD based router/gateway. Technologies: 
 Windows 98/2000/XP, FreeBSD, squid, ipfw

I was a regular sysadmin. There were: - 15 workstation with Windows 98/2000/XP - Windows 2000 Server - FreeBSD based gateway Although, in the beginning there were only 3 interconnected PCs in a bookkeeping department. Step by step I upgraded the IT infrastructure. I was also responsible for backups, user support and basic computer repairing.

Faculty of Innovations, Applied Informatics

Faculty of Radiophysics

Computer Science Department