Особисті дані приховані

Alexandr A. Dotsenko
System administrator
[відкрити контакти](див. вище в блоці «контактна інформація»)
[відкрити контакти](див. вище в блоці «контактна інформація»)
Skype: calltop
Main skills:
System administrating: Linux (10+ years), FreeBSD (5+ years), servers and network
administration, installing and maintenance. Remote administrating. Scripting.
Technologies: TCP/IP, HTTP, POP3, IMAP, SMTP, SMB, Firewall, wireless, DNS, FTP, .
Administrating: Apache, Nginx, bind, Squid, Samba, Postfix, MySQL, tomcat, wildfly , ipnat, ipfw,
ansible, ProFTP, nagios, RedHat(+clones) Linux, SUSE Linux, FreeBSD, Debian Linux,
ALTLinux. Shell, Python, PHP.

Languages:
English – intermediate (reading/writing, speaking with a simple phrases)
Ukrainian, russian – native

Career:
GigaCloud
API developer 08.2024 - 04.2025
Writing PHP scripts for integrating different products, automating routine operations. Writing
instructions and technical documentation. Migration support.

isd.dp.ua
system engineer 05.2023 – 01.2024
Installation, updating, migrating of applications using specific scripts. Shell scripting for
automation routine operations. Remote administration. Developers support in Linux specific issues.
Shell scripting for automation routine operations.
Details: AIX, Oracle Linux, PostgreSQL, Oracle, Apache, local tools, shell

freelance: few little projects for creating bulk email sending systems
sysadmin 2015 - 2024

Form.com
Linux system administrator | 09.2021 – 10.2022
Installation, updating, migrating of applications and parts of distributed applications. Monitoring
and troubleshooting. Writing of technical documentation. Developers support in Linux specific
issues. Shell scripting for automation routine operations
Details: CentOS, Solaris, ansible, Mysql, PostgreSQL, Tomcat, Nginx, Rundeck,

Arsenal-smtp.com
Linux system administrator | 02.2015 – 09.2021
Installation and maintenance of bulk sending system. Shell scripting for routine operations.
Monitoring and troubleshooting. Developers support in Linux specific issues. Remote
administration. Installation and maintenance of bulk sending system. Automation of parsing logs,
backups and reporting. Details: Postfix, opendkim, Apache, dovecot, shell scripting.

Shazzlemail
System administrator | 03.2010 – 02.2015
Support and maintenance USA outsource development company network.
Linux environment for developers design, maintenance and support LAMP (Linux + Apache +
PHP(Perl) + MySQL). Shell scripting for routine operations. Monitoring and troubleshooting.
Developers support in Linux specific issues. Remote administration on USA side hosting. Email
servers maintenance and support (Postfix, Dovecot, DKIM)
Details: CentOS, bind, postfix, MySQL, FTP, shell
Shipbuilding plant ChSZ
System administrator, chief of IT subdepartment | 11.2007- 03.2010
Maintenance network of 300 distributed hosts, administration Debian Linux servers.Monitoring.
Customer support. System and network issues troubleshooting. Manage a team of IT subdepartment
(5 members). Creating and support subnetworks for remote department of plant and connecting with
main network (ADSL, wireless). Details: Debian Linux, bind, postfix, samba, squid network
designing and installing, Windows 98, 2000, XP
Hostingmax (Hostopia, GeekForLess)
linux system administrator | 10.2004 – 11.2007
Active member of design and support of an office network, for about 100 workplaces and dedicated
network for IP-telephony over 50 endpoints. There were over 300 users in the attended network. I
have take a part in design and build Designed Structured Cabling System network for 400 LAN
ports. Support and maintenance Windows computers for staff. Linux environment for developers
design, maintenance and support LAMP (Linux + Apache + PHP(Perl) + MySQL). Shell scripting
for routine operations. Monitoring and troubleshooting. Developers support in Linux specific
issues. Remote administration on Canadian side hosting.
Details: SuSE, RedHat(CentOS) Linux, Apache, PHP, networking, , DHCPD, Samba, Squid,
iptables, FTP, shell scripting for automatization routine operations.
Details: Debian Linux, bind, postfix, samba, squid, network designing and installing, Windows 98,
2000, XP

Ultratech ltd.
Network engineer, system administrator | 02.2000 – 11.2004
Creation and support of a regional network, and support of FreeBSD servers (Apache, MySQL,
bind, DHCPD, Samba, billing system, VPN, PPPoE), support of clients.
Responsibilities:
Active member of design and support of regional wireless network, more then 30 local
networks for 10-300 workplaces, installation and support billing system UTM,
installation access points and office servers based on FreeBSD, installation hardware
access points: firewall, apache, DNS, squid, samba, sendmail, postfix, VPN, monitoring
system, pure-ftpd, vsftpd. There were over 700 users in the regional network. Remote
administration of servers, support and maintenance Windows computers for clients, member
of building Designed Structured Cabling System networks up to 300 ports.
Education
1. Mathematic lyceum | 1988-1992
Qualification : mathematic-programmer

2. Marine University | 1992-1997
Qualification : engineer-economist

3. Hillel IT school | 2022- 2023
Qualification : DevOps

4. NIX Education | 2023-2024
Qualification : Python Developer