Олег

Oleg Yershov
05/01/1979

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DevOps engineer

Summary of Qualifications
20+ years working experience in IT as system administration, support, network administration
4+ years working experience in DevOps

Skills
Programming Languages/Technologies
• Software Architecture Design / Reverse Engineering
• SaaS
• C++/C#
• Borland Delphi/ Pascal
• Assembler
• Python
• JS, HTML, CSS
DB
• MySQL
• MongoDB, PostgreSQL
• JanusGraph, Cosmos DB
• MS Access
• Firebird
Cloud
• Google Cloud Platform
• AWS (EC2,S3,Route 53,IAM,etc)
• Azure, Azure DevOps
• OCI
CMS
• Joomla
Development Tools
• Visual Studio 2019
• IntelliJ IDEA
• Lens
• Borland Delphi
• Microsoft Visio
• IDA

Application/Web Servers
• Nginx
• IIS
• Apache
• Tomcat
Monitoring
• Zabbix
• ELK
• Grafana
• SmokePing
• UptimeRobot
VM
• KVM
• ProxMox
• VirtualBox
• VmWare
Version Control
• SVN
• Git, BitBucket
• TFS
Cloud services/Technologies
• Docker
• Terraform
• Vagrant
• Jenkins
• Ansible
• GitLab CI
• TeamCity
• K8s, Helm, Argo CD (w/o Prod practice)

Operating Systems
• Microsoft Windows
• Ubuntu/Debian
• FreeBSD
• RouterOS, AirOS

Other Technologies
• RTSP streams
• RabbitMQ, MSMQ
• Active Directory
• Panasonic PBX
• Fail2Ban
• VLAN
• VPN
• Acronis and Cloud backup
• DVR
• 1С
• Cross-compile
• Cloudflare
Hardware
• Network technologies
• Different technological device (MikroTik/Cisco/Fortinet/SoC/etc)
• Block repair PC
• Raspberry Pi, SheevaPlug
• Weigh-In-Motion System
• SMA Cluster Controller
• Recovery of Android devices

Experience / IT related educational practice
DevOps (2022-2024)
Terraform in production. 250+ servers in AWS (Windows 2k12-2k19, Linux), Azure and on-prem (VMware ESXi), Cisco. GitLab for CI/CD, CVS. IIS, Nginx, MS SQL, PowerShell, Symantec Endpoint Protection, SharePoint, WSUS, Orca Security, Arduino.

DevOps (2020-2022)
SOLVVE - 4 projects on Azure and AWS cloud (Linux VMs). Maintenance IaC with Ansible. CI/CD with TeamCity and Azure DevOps. Work with Docker, Docker registry. Edit configuration nginx. Migration from Cosmos DB to JanusGraph. Maintenance MongoDB. Create monitoring with Grafana, ELK. Write technical documentation. Create health checks. Make CloudFlare and Fail2ban protection. Migrate from Bitbucket to Github. Make backups to S3.

System administrator/ support (2018-2019) Comodo Ukraine LLC - Dnipro, Ukraine. Resolved multi tasks from different clients. Support up to 20 hosts and 50+ virtual machines. HP switches, Juniper SRX345. Video monitoring servers. Access Control System servers and controllers ZKTeco.

System administrator/ support (2015-2018) TM “WorkRocks”- Dnipro, Ukraine. Resolved multi tasks from different clients. Support up to 60+ hosts and 10+ virtual machines, Cisco Catalist switches, MikroTik routers. Video monitoring servers. Tree.tv support (git, svn, edit sound tracks in .avi). Work with API RTSP streams. Maintenance Weigh-In-Motion System.

System administrator/ support (2006-2015) Almaz Motor, LTD - Dnipro, Ukraine. Resolved multi tasks from different clients. Support up to 150+ hosts and 15+ servers. Maintenance terminal servers 1C, Active Directory, mail servers, MeDoc, Symantec, NAS, SAT, PBX, switches, routers, GSM gateways, DSL and PSTN modems. Block repair PC.

Languages
English - Intermediate

Ukrainian - native

Russian - native

Additional education (courses, trainings)
Flexible methodologies of developing automated configuration management systems – Linux, Windows (SoftServe 2019)
Education : 1996-2002 Dnepropetrovsk Institute of Transport Engineers