Hello, I am

Oleksii Koverin

DevOps & Security Engineer

With over 20 years of IT experience, I specialize in infrastructure automation, system security, and advanced troubleshooting. Currently focused on DevOps with deep expertise in Terraform, Ansible, Docker, and enterprise security tools (Nessus, Nexpose, DLP). I build resilient environments and streamline CI/CD workflows.

Upwork Profile LinkedIn Profile

Docker & Git

Terraform & Ansible

InfoSec & DLP

Nessus & Nexpose

Bash & Logging

Log Analysis

Troubleshooting

Zimbra Mail

OpenCart & APIs

Flutter (Beginner)

Jira & CI/CD

Professional Experience

DevOps Engineer

Oct 2022 – Present

Web-Source Technology Ltd

Spearheading infrastructure automation, deployment pipelines, and environment management using modern DevOps methodologies.

Terraform Bash Docker Ansible Git

Senior System Administrator & InfoSec Specialist

Aug 2011 – Oct 2022

BADM ltd. | Dnipro, Ukraine

System Administrator (2011-2020) ➔ Senior SysAdmin (2020-2022)

Played a pivotal role in the Information Security Department and managed extensive enterprise infrastructure over an 11-year tenure. Key achievements include:

Security & Compliance: Implemented DLP against internal leaks, deployed ELK/SIEM with FortiGate IDS/IPS integrations. Conducted vulnerability scanning via Kali Linux, Cymulate, Nexpose, and Nessus. Advanced PAM implementation.
Infrastructure & Virtualization: Administered Windows/*nix platforms, Active Directory, GPO, DFS. Extensive experience with Vmware ESXi/vSphere hypervisors and hardware management (iDrac, iLO, IPMIless).
Monitoring & Backups: Configured and scaled Zabbix monitoring for over 2,000+ nodes. Built robust disaster recovery using Veeam, IBM Tape Libraries, and encryption.
Networking & Services: Built and modernized local networks. Managed enterprise mail servers (Zimbra, Postfix, Exim) and facilitated the transition to Office 365.
Leadership: Managed budgeting, planning, and task delegation to subordinate IT staff while proactively troubleshooting complex incidents.

ELK / SIEM Zabbix (2k+ nodes) VMware ESXi FortiGate Veeam Active Directory DLP

System Administrator

Jul 2008 – Aug 2011

UMAX

Maintained IT systems and networks, utilizing Bash scripting for task automation and logging.

IT Specialist

2002 – 2005

Digma

Provided foundational IT support, hardware maintenance, and systems configuration.

Featured Work

A selection of recent projects built for clients globally.

Infrastructure as Code

Automated the provisioning and configuration of server environments using Terraform and Ansible. Containerized legacy applications using Docker for improved scalability.

Terraform Ansible Docker

Enterprise Security Audit

Conducted deep vulnerability scanning using Nessus and Nexpose. Implemented DLP solutions, extensive log analysis, and system troubleshooting to harden enterprise networks.

Nessus Nexpose DLP

E-Commerce & API Dev

Deployed and customized OpenCart solutions with custom API integrations. Currently exploring mobile application integration using Flutter to expand service offerings.

OpenCart Bash/API Flutter