Oleksandr Meleshchuk  new_releases

Development, design, maintenance of the network, computer equipment, network services, improvement and analysis of existing network, server, and service infrastructure; Provision of computer services, computer hardware repair; Users' technical and software support;
Setting up, administrating, maintaining Microsoft based operation systems 95/98/2000/XP/Win7/Win8/Win10,
Windows Server 2000, 2003, 2008, 2012, 2016, 2019;
- Setting up, administrating, maintaining Linux based operation systems Debian, Ubuntu, CentOS, and Unix-like
FreeBSD;
- Administration of the: 1C, software system "League" Best-report, MeDoc, 1C-Zvit, setting up of the mail
(Dovecot, Postfix, Exim4, MS Exchange Server 2003, 2007), FTP, SQL (MS SQL, MySQL, PostgreSQL,
MongoDB), LAMP (Apache, Nginx, PHP), HAProxy, DNS, DHCP, NPS, DFS, NAS, VPN (OpenVPN, PPTP, L2TP,
IPSec), Comarch ERP servers;
- VoIP servers (Asterisk)
- AD, LDAP;
- Extensive experience with DigitalOcean, Amazon AWS, GCP, Vultr, Azure, and other cloud service providers;
- Ubiquity, Mikrotik, Cisco, Dell, HP, Fortigate, SonicWall network equipment;
- Intrusion detection/prevention services (IPS, IDS, SNORT, Suricata) firewall (routing, VLAN, ACL, Proxy, NAT,
DMZ), CARP, HA;
- HP, Supermicro, DELL, Fujitsu Siemens, IBM, Lenovo, EMC, NettApp equipment;
- Website administration (WordPress, Joomla, PHP, HTML, css etc.);
- Virtualization (Proxmox, Virtualbox, VMware, HyperV);
- JIRA, Confluence, Bitbucket, Zabbix, Nagios, Splunk, Zurmo, ELK, Docker, etc.
- Design and installation of video surveillance systems (CCTV)