Vladimir K. Email and Phone Number

- python, asyncio, SQLAlchemy, aiohttp, FastAPI- MySQL- kafka- datadog- AWS, kubernetes, terraform

This section describes my own stuff and pet projects during this period.- Built several projects for DPoS blockchains - scripts and utilities, analyzers- Developed crypto trading bots, arbitrage bots- Largely contributed into python libraries python-graphenelib and python-bitshares: implemented asyncio support, integration testsuite to run real API node inside docker CT- Developed django app integrated with blockchain API. It used django as backend (ORM and admin interface), has a blockchain parser, and telegram bot to interact with users. Packaged into docker containers and deployed via docker-compose.- Built ansible workflow to deploy VPSes- Implemented monitoring of own services via prometheus and grafana + alertmanager for telegram notifications

Largely contributed into [DEXBot](https://github.com/Codaone/DEXBot) - opensource market-maker bot for BitShares. Stack:Python, PyQt, sqlite, sqlalchemy, alembic, pytest, ccxt, travis, appveyor, dockerTasks:- Implement new strategies- Fix bugsAchievements:- Fixed lots of bugs- Improved business logic- Implemented integration testsuite- Improved related libabries python-bitshares, python-graphenelib (bug fixes, asyncio support, integration testsuite to run real API node inside docker CT)

Worked in a team of ~10 developers and 2 mid/junior System Administrators. Application stack to support was Python, Django, PostgreSQL, Postgis, Celery, Rabbitmq, Redis.Stack:Linux Ubuntu 12, 14, 16, Proxmox, OpenVZ, KVM, chef, ansible, git, gitlab, redmine, docker, PostgreSQL, nginx, postfix, cyrus-imap, uwsgi, redis, asterisk, hylafax, redmine, backuppc, Microsoft AD, HP networking hardware, mikrotik hardware, openvpn, zabbix, samba, NFS.Tasks:- Servers administration (hardware, setup & provisioning)- Deploy automation (chef, ansible), VMs provisioning- Monitoring and backups- Data Center administration- Networking hardware administration- Planning- Managing of IP PBX (asterisk) which runs 24x7 call centerAchievements:- Reorganized whole IT infrastructure- Built server infrastructure based on Proxmox VE- Built backups and monitoring (zabbix)- Automated VM and software deployment via chef, ansible, gitlab- Implemented custom feature in openvpn

I worked at the upwork for a half of the year in freetime. Here is several project I was involved in:- Developed a set of scripts (bash) to build custom VM images for GCE to be run from Jenkins to deploy software- Developed ceph block device boot support for dracut (PR done but didn't merged in time)- Investigated SR-IOV in kubernetes cni plugin

We had a developers team, and I was responsible for "ops" part. At the beginning, we used bare-metal setups, then at around 2006 we switched to running stuff in OpenVZ containers.Stack:ALT Linux, OpenVZ, PostgreSQL, MySQL, nginx, Apache, postfix, samba, windows servers to run .Net framework apps.Tasks:- Servers and CTs administration- Networking hardware administration- Monitoring and backups- Planning- Managing of IP PBX (asterisk), E1 trunksAchievements:- Almost from scratch, I built the whole server infrastracture. I managed both server hardware and software.- Performed migration from bare-metal to OpenVZ containers

Participated in open-source project for fun.Stack:RPM, apt, bash, git.Tasks:- RPM-package software- Fix build failures, patch, send fixes to upstream- Deal with runtime bugs, determine if bug is distro-specific or not, report to upstream if neededAchievements:- Maintained lots of software packages (~80 at high)- Numerous bugs fixed

Support of ISP clients. Here I started to learn Linux.Tasks:- Provide telephony support to clients- Keep eye on monitoring charts- Grep smtp logsAchievements:- Provided high-quality support- Got initial linux knowledge