/cv

Volodymyr Hetmanshchuk

POSITION:

DevOps / SRE

PERMANENT ADDRESS

  • Ukraine, Dnipro

PERSONAL INFORMATION:

  • Citizenship: Ukrainian
  • English: Fluent

INTENTIONS:

  • Enhance my DevOps / SRE skills
  • Get more cloud experience in public clouds like AWS/GCP
  • Use my skills for designing/building/deploying/supporting high-load web applications
  • Use my knowledge, experience and skills to perform all functions of system administrator for UNIX-like systems in heterogeneous environments
  • Use my experience in database administration and database design
  • Be the part of exciting project, which will important and useful for society

SUMMARY EXPERIENCE:

  • More than 15 years of work with computer systems
  • Strong Unix/Linux background
  • Highload web applications
  • DevOps, CI/CD experience
  • Public clouds: Amazon AWS, Google GCP, Hetzner Cloud
  • Containers and container orchestrations
  • Some DBA skills (PostgreSQL/MySQL/MongoDB/Redis/ElasticSearch/ClickHouse)
  • Web developing skills
  • VOIP skills

SKILLS:

Operation systems:

RedHat, CentOS, Amazon Linux, Ubuntu, Debian, Alpine

Programming:

Shell, LUA, PHP, Go, Python

Software:

DevOps:

CI/CD:

Bamboo, Gitlab, Jenkins, Bash

IaaC:

Ansible, Terraform, werf

Container and container orchestration:

Docker, Kubernetes, Helm

Web:

Apache, Nginx, Varnish, HAproxy

Security:

Nessun, Tenable.io, iptables, snort, ossec, nmap, logwatch, rkhunter

Databases:

SQL:

MySQL/Percona/Percona Xtradb Galera cluster/ClickHouse, PostgreSQL, SQLite

noSQL:

MongoDB(Sharded Cluster), Redis(Cluster and Sentinel), memcached

Monitoring:

Prometheus and ecosystem: blackbox/alertmanager/pushgateway/snmp, Nagios, Zabbix 2+/3+, ELK, Grafana, InfluxDB, New Relic

Email:

Sendmail, Exim, Postfix, MailMan, SPF, DomainKeys, DKIM, DMARC

VCS:

Git, Subversion

Backup:

rsnapshot, tar, rsync

Network:

isc-dhcpd, IPFW, ipf, ALTQ, iptables, tcpdump, ifconfig, netstat, sockstat, openssh, telnet, traceroute, trafshow, trafd, squid, iftop, snmp, etc…

CDN vendors:

Akamai, LLNW, Cloudflare, AWS Cloudfront, Fastly

Dedicated server vendors:

Hetzner, Rackspace, Online.net

EMPLOYMENT HISTORY:

SpotOn Transact, LLC: December, 2021 – present, USA/Ukraine_

Position: DevOps/Cloud Engineer
Responsibilities/Achievements:
  • Managing and supporting infrastructure with more then 100+ AWS terraform components
  • Infrastructure management with CloudPosse Atmos and SpaceLift
  • Implementing and supporting Teleport clusters(Root and leaf) in multiply AWS account to provide access to K8s/RDS/Mongo Atlass
  • Okta integration with Teleport
  • Building CI/CD piplines in GitHub actions, using custom actions and workflows

Smart Project, GmbH: August, 2019 – December, 2021

Position: Lead DevOps Engineer / CTO
Responsibilities/Achievements:
  • Managing team of 1 DevOps engineer and 2 system administrators
  • Supporting more then 100+ physical servers and 50+ virtual servers by Ansible, wrote more than 40 Ansible roles
  • Managing HA clusters: Mongo Sharded Cluster/Redis Cluster/Redis Sentinel + HAProxy
  • Supporting company Amazon AWS infrastructure with Terraform: Route53 (GEO distributed multi-CDN setup with failover), ACM, Cloudfront, Clowdwatch, IAM
  • Implemented Prometheus monitoring system and incedent management system with Atlassian OpsGenie
  • Supporting on premises Atlassian services: JIRA/Confluence/Bitbucket/Bamboo
  • Security management: Tenable.io, security polices, SSO everywhere, Ansible Vault

Yallaclassifieds, OU: Apr, 2016 – August, 2019, Estonia/Ukraine

Position: Site Reliability Engineer / DevOps
Sites: lalafo.com, lalafo.az, lalafo.kz, lalafo.rs, lalafo.gr, lalafo.fi...
Responsibilities:
  • Jenkins, GitLab CI/CD
  • Migration all application from bare metal to k8s
  • Dockerization of all microservices
  • SQL performance supporting
  • DevOps / SRE Practics

XOtel, SIA: Dec, 2012 – Apr, 2016, Ukraine

Position: Unix System Administrator
Responsibilities:
  • Building open-source based SIP system
  • Administration of FreeSwitch, Asterisk and other VoIP server for transit telephone traffic.
  • FreeSwitch with LCR based routing.
  • PostgreSQL plpgsql procedures for LCR routing, CDR caring, Call Access Controls, numbering plan number allocation.
  • SMPP servers, design system for transit SMS traffic, designing own SMS platform.

LogMeOnce.com: Apr, 2012 – present, USA

Position: Unix System Administrator
Responsibilities:
  • Deply and support project on Amazon AWS (EC2/Route53/S3/RDS/ElasticCache).
  • Simple CD Deployment via bash and aws-cli tool
  • Software/OS hardening
  • Security Monitoring

NetLab Systems, LLC: Feb, 2011 – Dec, 2012, USA

Position:

Unix System Administrator

Sites: openfilm.com, motorsport.com, netelement.com, music1.ru
Responsibilities:
  • Administration of dedicated servers, migration to Amazon AWS;
  • Work with the following OS: FreeBSD, RHEL 5.1, CentOS 5.x, Amazon Linux;
  • Software: php-fpm, postfix, exim, dns, nginx, apache, mysql, scribe server, nagios; Server tuning, monitoring, analytics, SEO (sitemap generator for site with dynamic pages(based on google sitemap_gen), robots.txt, video feeds generation, video feeds submission);
  • MySQL DB administration(Replication, MySQL Percona Servers+ Sphinx Search Engine), Amazon RDS, SimpleDB;
  • Backup (rsync, rdump, dump, restore); Solutions for automation in cloud computing and using 3rd part solutions like scalr (own installation), rightscale;
  • SEO

Openfilm, LLC: Apr, 2008 – Feb, 2011, USA

Position: Unix System Administrator
Responsibilities:
  • Administration of dedicated servers, migration from bare-metal to Amazon AWS: EC2/RDS/;
  • Work with the following OS: FreeBSD, RHEL 5.1, CentOS 5.x, Amazon Linux, Suse Linux, WinXP;
  • Software: php-fpm, postfix, exim, dns, nginx, apache, mysql, scribe server, nagios;
  • Server tuning, monitoring, analytics, SEO (sitemap generator for site with dynamic pages(based on google sitemap_gen), robots.txt, video feeds generation, video feeds submission);
  • MySQL DB administration(Replication, MySQL Percona Servers+ Sphinx Search Engine), Amazon RDS;
  • Amazon SimpleDB;
  • Backup (rsync, rdump, dump, restore);
  • Solutions for automation in cloud computing and using 3rd part solutions like scalr (own installation), rightscale;
  • SEO

Blaze.com.ua: Jan, 2005 – May, 2008, Ukraine

Position: Founder, Network Designer
Responsibilities:
  • Management, concept development;
  • Client support;
  • Planning of SCS;
  • Ethernet, VoIP, WDM;
  • Equipment adaptation and modernization for the our market.

ApexNet: Mar, 2004 – Oct, 2004, Ukraine

Position: System Administrator
Responsibilities:
  • Server support (based on FreeBSD);
  • Routing;
  • Firewall, hosting server, other services.

Оptima Telecom: May, 2003 – Dec, 2004, Ukraine

Position: System Administrator
Responsibilities:
  • Building of Wi-Fi networks for VoIP applications;
  • Linksys Access Point WAP-11, Linksys Booster, Antennas, APC Smart UPS, SDSL modems, ATA.

UrkPromTrans: Dec, 2002 – Feb, 2003, Ukraine

Position: System Administrator
Responsibilities:
  • Support of Samba Server;
  • Dial-in Server, web Server
  • Writing scripts using Perl;
  • Hardware: PC, modems, Smart Switch, Hub, and Digi Multi-Ports;
  • Software: samba, apache, Secure CRT, PuTTY, FAR.

EDUCATION: