Unix
6
Linux and Unix · Software and server configuration
Khmelnitskyi, Ukraine
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773 0
System administration · Software and server configuration
Sumy, Ukraine
Professional system administration. Linux/Unix.
2683
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My Skills and Experience I specialize in and work with various operating systems: Debian Ubuntu RHEL CentOS FreeBSD Windows I work with server hardware: IBM HP ProLiant Dell PowerEdge Supermicro I know how the following software should work: Web: Apache, Nginx, Lighttpd, OpenLiteSpeed Mail: Exim, Postfix, Dovecot FTP: ProFTPd, vsftpd, PureFTPd DNS: BIND, PowerDNS DHCP Gateway: NAT, traffic shaping Proxy: Squid Directory: LDAP AAA: FreeRADIUS VPN: IPsec-based, OpenVPN, PPTP, L2TP TFTP NTP Syslog TLS/SSL SNMP Virtualization: KVM, Xen, VMware ESX, OpenVZ, Proxmox Backup and Restore: RSYNC Revision Control Systems: CVS, SVN, Git File Sharing: NFS, SMB Software-Defined/Network-Based Storages: DRBD, Ceph, iSCSI, AoE Printing Systems: CUPS I am familiar with databases: PostgreSQL MySQL I have experience with monitoring systems: Zabbix Cacti Munin I also work with: Telephony: Asterisk (FreePBX, Elastix, MikoPBX) Routers: Mikrotik, All (Firmware OpenWRT, DD-WRT), hardware repair Billing systems for Internet Service Providers: Abills, Ubilling (building networks from scratch) Billing systems for hosting providers: BillManager, RootPanel, WHMCS Hosting panels: ISPManager, CPANEL, BrainyCP, VestaCP, ISPConfig, aaPanel, HestiaCP PON equipment (ONU, OLT): BDCOM Switches: Mikrotik, D-Link, TP-LINK, Cisco I have extensive experience in these areas. Feel free to reach out to me, I'll answer all your questions!
Please note: I do not engage in website development.
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Привет! Linux & VoIP инженер к вашим услугам, всего коммерческий опыт около 4х лет. Занимаюсь администрированием Linux-систем и, немного, разработкой под небольшие задачи. 4 года опыта работы с UNIX-подобными системами (Debian / Ubuntu).
✔️VoIP Telephony services (SIP):
Asterisk, FreePBX IP-PBX platforms
Experience with hardware like GSM, FXO/FXS gateways, PRI modules
Dialplan programming (AEL, LUA)
Asterisk AMI, AGI, ARI interfaces
A little experience with Kamailio
SIP trunking and carriers interconnection
✔️Linux and DevOps:
A power user and administrator of Debian/Ubuntu systems for about 5 years
VPS and Cloud Environments such as Hetzner, Digital Ocean, Vultr, Linode, Rackspace, GCP, AWS (Cloud Practitioner)
Experience with Terraform, Ansible, Puppet, Docker, LXC
Proficient with Proxmox (KVM)
✔️Monitoring:
Experience with Zabbix and Nagios
Prometheus, Grafana, ELK
✔️Software Development
Junior level of PHP, JS, Bash and Python
FrontEnd development (jQuery and React.js)
API development - Node.js (express, koa), Python (flask)
✔️Networking
Feeling comfortable about the most common networking protocols around me
Fell in love with SIP & (S)RTP, DHCP, HTTP(s), DNS, ICMP, WebRTC, STUN, SSH, VRRP and a few others
Proficient with Cloudflare (DNS, firewalling, SSL/TLS)
Experience with Mikrotik hardware (on my path to MTCNA now)
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