Dmitry G.

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)