Kostiantyn

DEREVIANCHENKO KOSTIANTYN
System administrator
E [открыть контакты](см. выше в блоке «контактная информация»)(roaming)  [открыть контакты](см. выше в блоке «контактная информация») q https://github.com/bootdrv/main-server
 Romania

SUMMARY SKILLS
Velocity, reliability, troubleshooting highload Linux servers, and micro-services of Company. OS \ Programming \ network skills
Make CICD / Pipelines for Git, Jenkins, Docker, K8S, Terraform, Ansible.
Use clouds and cloud services: AWS, DigitalOcean, Vultr, Servermania, Hetzner, GCP, S3, Linux servers Windows servers Bash
- EC2, Droplets, AIM, IAM, Security, GoogleWorkspace, Backups, K8S, Balancing and auto-scailing servers.
Integrate VM\Tools\lang: VMWARE, VBOX, Vagrant, XEN, Proxmox, Letsencrypt, Wireguard VPN, Routing Mikrotik Unify ILO
- bash-scripting, ELK, Yaml, Json.
Troubleshooting Services\ DNS \ DB: Nginx reverse-proxy, Haproxy, Apache, Tomcat, LAMP, Cloudflare, SIP, FreePBX iDRAC DNS
- Letsencrypt, Redis, Postgesql.
Monitoring: Zabbix \ Prometheus + Grafana, Haproxy, RabbitMQ.
Databases & Cloud services
Network \ Routers \ Remote management: Mikrotik, Routing, VPN, Protect, Unify, HP ILO, DELL idrack.
Servers \ OS: Windows servers 2016 - higher, Linux servers: Ubuntu ; Debian ; Centos, Windows 10 \ 11.
MySQL PostgreSQL Redis AWS

GCP DO Vultr Hetzner S3

Proxmox XEN RabbitMQ Nginx

Tomcat Apache Cloudflare ELK

Reverse proxy Haproxy

Protocols \ Routers \ Wireless

TCP\IP UDP Osi Model Layers

Mikrotik Dual\Triple WAN switching

VPN: OVPN / l2TP / IPsec / SSTP

Brute-force protection scan port protection

Static routing hotspot sip over vpn tunnels

Seamless nets traffic distribution

Tools
CI\CD Pipelines GIT JENKINS Docker Vagrant

Kubernetes Terraform Ansible Letsencrypt Vbox

VMWARE Veracrypt Wireguard Prometheus Zabbix

Grafana Redmine FreePBX SIP
EXPERIENCE
DevOps Engineer
COMODO NuRD
2021 2024
Production company
• Install, setup, and support production
servers and services.
• Writing bash-scripts for checking the
states web services and deploying code.
• Migration linux servers, and services to
• Cloud VMs and starting services in
docker.
• Monitoring Zabbix+Grafana and
RabbitMQ.
• Jira tasks of maintenance.
• Making the technical runbooks.

System Administrator
MARCONI
2015 2021
Manufacturing company
• Organization of secure remote work for users.
• Providing technical support for users, diagnostics, and elimination of hardware
failures at workplaces.
• Making L2TP VPN tunnels.
• Ensuring the operation of MikroTik network equipment.
• Implementing seamless Wi-Fi roaming.

System Administrator
ViCTORIA
2013 2015
Pharmacy company
• Service and maintenance of network equipment such as MikroTik, Draytek, and
Ubiquiti.
• Connection and setup of commercial equipment for enterprises, including cash
registers and barcode scanners.
• Maintenance, diagnostics, and auditing of local and wireless networks across
70 remote branches.
• Organization of monitoring remote hosts with the ability to instantly connect via
VPN tunnels.
• Servicing video surveillance systems such as Dahua and Hikvision.

System Administrator
MED SERVICE
2012 2013
Pharmacy company
• Pharmacy company
• Administration of 26 retail facilities.
• Teaching employees the primary skills to work in 1C sales accounting programs.
• Backup and recovery of databases and software working environment.
• Repair and maintenance of computer equipment.