Vyacheslav Koval - Резюме System Administrator

Central Bank of the Russian Federation Moscow Finance Sector Leading Database Engineer April 2022 – Present (2 years 4 months) Managing high-availability PostgreSQL/MS SQL clusters with high downtime costs. Minimum database size: 32 TB. Average number of requests: 7000 per second. PostgreSQL versions from 8.8 to 15.0 for different tasks. Clusters configured differently depending on the task: Corosync + Pacemaker for asynchronous clusters with low load but high fault tolerance, Patroni where performance is a priority. JSC "Medical Technology Agency" Moscow Information Technology, System Integration, Internet Information Security Administrator December 2020 – January 2022 (1 year 2 months) Transitioned infrastructure to comply with Federal Law-152, maintained information security incident logs. Software: SecretNET Studio, vGate, xSpider. Server software (local): Hypervisor: Proxmox VE 5.2-6.3. Virtual machines: XigmaNAS 11.2 (for local backups), automated testing servers FreeBSD 12.1 + KDE + Java 8 + IntelliJ IDEA Community Edition 2019.2.4 + Jenkins, Ubuntu 20.4 + KDE + Java 8 + IntelliJ IDEA Community Edition 2019.2.4 + Jenkins, Windows 10 + Java 8 + IntelliJ IDEA Community Edition 2019.2.4 + Jenkins. Firewall: FPSUIP-STD3-1U. Server software (remote): Application server: Windows Server 2016. Hypervisors: VMware vSphere 7. Virtual machines: web servers (production, rc, build) - apache + nginx + bitrix, DB server - PostgreSQL 11-14, mail server - Zimbra 8.8.11-8.8.14, authentication servers - FreeIPA 4.7.2 - 4.8.1. Firewall: FortiGate 100F. Monitoring: Zabbix + Graylog. JSC "Medical Technology Agency" Moscow Information Technology, System Integration, Internet System Administrator October 2018 – December 2020 (2 years 3 months) Deployed and administered high-load, fault-tolerant server systems. Server software (local): Hypervisor: Proxmox VE 5.2-6.3. Virtual machines: XigmaNAS 11.2 (for local backups), automated testing servers FreeBSD 12.1 + KDE + Java 8 + IntelliJ IDEA Community Edition 2019.2.4 + Jenkins, Ubuntu 20.4 + KDE + Java 8 + IntelliJ IDEA Community Edition 2019.2.4 + Jenkins, Windows 10 + Java 8 + IntelliJ IDEA Community Edition 2019.2.4 + Jenkins. Firewall: FPSUIP-STD3-1U. Server software (remote): Application server: Windows Server 2016. Hypervisors: VMware vSphere 7. Virtual machines: web servers (production, rc, build) - apache + nginx + bitrix, DB server - PostgreSQL 11-14, mail server - Zimbra 8.8.11-8.8.14, authentication servers - FreeIPA 4.7.2 - 4.8.1. Firewall: FortiGate 100F. Monitoring: Zabbix + Graylog. Smart Media ADV LLC Moscow Media, Marketing, Advertising, BTL, PR, Design, Production System Administrator June 2016 – August 2018 (2 years 3 months) Local server software: High-availability hypervisor with load balancing: Microsoft Hyper-V. High-availability hypervisor with load balancing: Openstack Newton. Around 15 virtual machines with roles: OS - MS Windows 2012 R2 Server (AD, DNS, IBM ClearQuest, FreshOffice CRM), Linux Ubuntu 16.04 (Apache, MySQL, Youtrack), FreeBSD 10.3 (local DNS), CentOS 5.11 (Elastix 2.40 VoIP Server), FreeNAS 11 on a hardware server. Around 24 remote servers with roles: OS - MS Windows 2012 R2 Server (1C Server 8.3, MS SQL 2016, RDS, Zabbix Client). MS Windows 2012 R2 Server (Pentaho Server 8). FreeBSD 11.1 (Apache 2.4.26 + MySQL 5.7.18 + IPF + Fail2Ban + Webmin + Zabbix Client). Debian Linux 9 (Apache 2.4.10 + MySQL 5.6.36 + nginx 1.12.0 + CSF 10.14 + Fail2Ban + Zabbix Client). Ubuntu Linux 16.04 (mail server Zimbra 8.6.0). Client software: OS - MS Windows 7 - Windows 10, mail client MS Outlook 2010 - 2016, 1C Enterprise 8.3. Routers: Cisco ASA 5510 (IPSec Server), pfSense 2.3.4 @ FreeBSD 10.3 (OpenVPN Server). Ivanhoe LLC Moscow region Information Technology, System Integration, Internet Lead System Administrator January 2015 – June 2016 (1 year 6 months) Coordinated the work of a team of 5 employees: one tech support specialist for SCB "Contour", one tech support specialist for CMS "Bitrix", one system administrator for server OS and workstation OS, one 1C programmer, and one web programmer. Assisted in all directions when necessary. Server at 91.223.246.151 (www.booty-bay.ru) running Ubuntu Linux 14.04 with 1C Server 8.3.6.2100 + PostgreSQL 9.3 and Apache with pre-installed DLE 10.6. Server: Gladius 229XT0816R-250016. Routers: Cisco 1841, D-Link DFL-1660. VoIP gateway: Grandstream GXW4004. Server software: Ubuntu Linux 14.04. Client workstation software: MS Windows XP - Windows 10 (around 80 machines), MS Office 2013, 1C Enterprise 8.3. 1C configurations: Enterprise Accounting, State Institution Accounting, Payroll and HR Management, Retail, Management in Housing and Utility Companies, and Homeowners Associations. Elitepak LLC Moscow Industrial Equipment, Machinery, and Components System Administrator March 2014 – November 2014 (9 months) Server software: OS: MS Windows 2008 R2 Server (AD, DNS, DHCP, Terminal Server), Linux CentOS 5.11 (Apache, MySQL, Qmail, 1C-Bitrix CMS). Database server: MS SQL 2008. VoIP server: 3CX Phone System. 1C Enterprise 8.3 - server (TIS, ZUP). Client software: OS: MS Windows XP - Windows 8.1, mail client MS Outlook 2003 - 2013, 1C Enterprise 8.3. Routers in Moscow: D-Link DFL-860 (VPN IPsec, PPTP, L2TP), MikroTik RB751G. PBX: Panasonic KX-NT400 + Cloud PBX. Quadrocom LLC Moscow Industrial Equipment, Machinery, and Components System Administrator October 2013 – February 2014 (5 months) Managed a large branch network with about 52 branches across Russia. Server equipment in Moscow (domain controller, database servers, terminal servers, IP telephony server). Server software: OS: MS Windows 2008 R2 Server (AD, DNS, DHCP, GPO, FTP, Terminal), database server: MS SQL 2008, VM hypervisor: Microsoft Hyper-V. Client software: OS: MS Windows XP - Windows 7, MS Office 2003 - 2010. Branch servers: OS: MS Windows 2008 R2 Server, MS SQL 2008. IP telephony (around 80 channels): Panasonic KX-NT400 + SIP-GSM gateways. Routers in Moscow: D-Link DFL-860 (VPN IPsec, PPTP, L2TP), MikroTik RB751G. Quadrocom LLC Moscow Industrial Equipment, Machinery, and Components System Administrator June 2010 – October 2013 (3 years 5 months) Deployed and administered local area network infrastructure. Installed and configured network equipment: Cisco, D-Link. Ensured reliable operation of the software and hardware complex.

Taganrog State University of Radio Engineering

Linux servers, Windows servers, Unix Freebsd servers PostgreSQL, MySQL, MSSQL Hyper-V, Openstack, Proxmox VE Apache, nginx Virtualization technologies Network administration Firewall management

Английский

I can work remotely, but I'm also ready to relocate.