ERNESTAS LUKOŠEVIČIUS Contacts ernestas@linux.com +37069016109 Vilnius, Lithuania Profile Skilled IT professional with extensive background in Linux, application scalability, high availability, cloud computing and automation. Experienced in scaling and provisioning systems with more than 1000 requests per second. Willing to relocate or telecommute. Core skills • • • • • • • Proficiency with all major Linux distributions, experience with kernel tuning and debugging. Understanding of various protocols and services, such as TCP, UDP, DHCP, DNS, SSL, NFS, etc. Hypervisors: Xen, VMware ESXi, QEMU/KVM with Libvirt, VirtualBox. Amazon AWS services: EC2, SES, S3, Glacier, VPC, etc. Scaling web servers and other applications. Monitoring: Zabbix, Munin, Cacti, MRTG, Monit. Languages: Python, PHP, bash. Work experience Otrapuse.lv Riga, Latvia 2014-now 11 months SameSystem Vilnius, Lithuania 2014-now 11 months 2012-now 2 year 6 months Aciety Kaunas, Lithuania System Administrator • Scaled and improved infrastructure of a site, which was getting up to 4,000 requests per second. • Upgraded and redeployed whole infrastructure with Ansible. • High availability: DRBD, Keepalived, MongoDB. • Monitored with Zabbix, Munin, Monit and self written scripts. • Administered and scaled MongoDB sharded replica clusters. • Backups: MongoDB, MySQL, etc. • HAproxy load balancing, Varnish caching, SSL termination. • Log collection with Logstash. • Network analysis, high availability and troubleshooting. Server Engineer • MySQL replication, monitoring, backups. • Puppet automation: wrote modules, improved architecture of the master with high availability, Mcollective, self-written ENC. • High availability with: Keepalived, Corosync and Pacemaker. • KVM (through Libvirt) virtualization of local infrastructure. • Monitoring: Zabbix, Munin, Monit. • High availability through GlusterFS, Ceph, Pacemaker, Corosync and Keepalived for various services. • In addition, administered servers for multiple sites getting more than 100 requests per second. Project Manager and System Administrator • Amazon EC2 and Microsoft Azure instances. • Automated backups to Amazon Glacier with Python and boto. • Implemented Munin, Zabbix monitoring. • Deployed an efficient development environment on Vagrant. • Symfony (PHP) application deployment with Capistrano. • Technical support for developers. Omnitel (TeliaSonera) Vilnius, Lithuania 2013 2 months Viarti 2008-now Kaišiadorys, Lithuania 6 years 1 month 2008 11 months Lietuvos Rytas Vilnius, Lithuania Junior System Administrator (Summer Intern) • All kinds of small Linux/VMware/Solaris administration tasks. • Implemented LIO SCSI Target on Debian. • PKI management. • Root cause analysis of various issues (i.e., kernel bugs). • Configured and monitored Cisco devices. • Improved availability of services by finding a bug in load balancer's software. • Developed efficient network monitoring on Cacti (PHP+rrd). IT Consultant • VMware ESXi administration: Debian and Windows. • File server backups. • Hardware maintenance (repair and deployment). • Technical support for users. Journalist “Kompiuterija” magazine (IT topics targeted to advanced users). Education 2011-2014 2007-2011 Stockholm School of Economics in Riga Riga, Latvia Kaunas University of Technology Gymnasium Kaunas, Lithuania BSc in Economics and Business Studies in English GPA: 9.4/10 Studies in Lithuanian Other activities and achievements 2011 2009 2007-2011 2007 Login 2011 conference ambassador Special guest at the largest IT conference in the Baltic States 6th place in the HOSTEX SysAdminDay Taurė 2008 contest for system administrators One of the most competitive IT contests in Lithuania Author of Versme.net blog (IT topics) Statistics: +400 articles, +220,000 unique visitors LEKP keyboard layout developer for Linux Currently, the drivers are included in the official X.Org upstream