15 years in IT. History of building modern internet service provider network infrastructure, from scratch to best ISP in local region with approx. 30000 of users and bunch of additional services: IPTV, VoIP, Cloud CCTV, game servers. One of core developers of corporate ISP billing system, xPON monitoring, internal CRM, DRM plugin for video streaming system.Network experience:- Development and managing large internet service provider network (30000 users, GPON, FTTx, IPTV, VoIP, ~100 linux servers up and running)- Solving critical network incidents. On-call duties.- Over 1500km of optical cables interconnected- Self developed customer billing system and ONU network monitoring system- Making key technology-related and conceptual decisions- Equipment i had a deal with: Cisco ASR, Cisco 7600, Huawei SmartAX, BDCOM GPON, Mikrotik, SNR, HP/Dell servers, Cambium and Ubiquity wireless- Software/services i had a deal with: Zabbix, Redmine, Asterisk, Docker, iptables, tcpdump, ping/traceroute, Microsoft VS Code, IntelliJ Idea, RabbitMQ, postgreSQL, mySQL, MongoDB, nginx- Technologies: IP, NAT, cgNAT, BGP(+RIPE.net experience), OSPFSoftware development experience:- Elixir/Phoenix Full-stack. I know, that the stack it isn't so popular, but it greatly good for making incredibly fast and secure services and backends for high load (just for example, Elixir is used by PepsiCo, Spotify, WhatsApp, Financial Times and so on).- Developer of Internet Service Provider billing system with integrated network devices monitoring (routers, switches, ONU) - using Elixir for aggregating data from SNMP/parsing raw IP packets/REST API)- Made some CRMs with custom business logic- Developing cloud license plate recognition system (backend part)