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a3888s/README.md

πŸ‘‹ Hello there! I'm Oleksandr Skibchyk

πŸš€ Certified DevOps Engineer with expertise in Cloud and CI/CD, with experience in Linux, Kubernetes, CI/CD, and Cloud services (AWS, GCP). 🌟 Strong skills in automation, Infrastructure as Code (IaC), and monitoring. πŸ’»

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🏒 About Me

  • 🌍 Based in Kyiv, Ukraine
  • πŸ› οΈ Passionate about infrastructure as code, containerization, and modern DevOps practices
  • πŸ’¬ Open to collaborating on exciting DevOps projects

πŸ“« Contact Me


βš™οΈ Work Experience

  • πŸ“ž IT Specialist (VoIP, PBX) @ CallsApp Ukraine (April 2024 - November 2024)

    • πŸ› οΈ Configured and administered VoIP solutions, including Asterisk, FreePBX, and GSM gateways.
    • πŸ”§ Deployed and maintained virtual PBX systems integrated with networking equipment.
    • πŸ“ž Managed and optimized IP telephony and related devices.
    • 🩺 Diagnosed and resolved technical issues of varying complexity.
    • 🀝 Provided consultations to business clients on service functionality and operations.
    • πŸ” Tested, implemented, and supported new technological solutions in IP telephony.
    • πŸ“Š Analyzed technical challenges and optimized system performance for stability.
    • πŸ“ Created technical documentation and conducted client training.
  • πŸ–₯️ DevOps Engineer @ spaceof.supply (May 2023 - May 2024)

    • βš™οΈ Automated deployment processes using Docker and GitLab CI/CD.
    • πŸ“‘ Developed REST APIs for integrating internal company services.
    • πŸ› οΈ Created CI/CD pipelines to streamline deployment workflows.
  • πŸ‘¨β€πŸ’» Intern Python Developer (January 2023 - May 2023)

    • 🐍 Learned and applied Python programming language and frameworks such as Django.
    • 🌐 Worked with APIs, HTTP protocols, and tools like gRPC and JSON-RPC.
    • πŸ—„οΈ Explored relational databases and their integration with Python applications.
  • πŸ–§ System Administrator @ Vyshneve Customs Office (April 2021 - January 2023)

    • πŸ› οΈ Designed and deployed IT infrastructure, including local networks and server environments.
    • πŸ“§ Configured remote workstations, corporate email, ERP systems, and video surveillance.
  • πŸ›‘οΈ Cybersecurity Specialist @ Armed Forces of Ukraine (October 2019 - April 2021)

    • πŸ•΅οΈ Monitored and investigated security incidents.
    • πŸ”’ Developed correlation rules for detecting security threats and vulnerabilities.

πŸŽ“ Education

  • πŸŽ“ Specialist, Engineering @ National University "Lviv Polytechnic" (2009 - 2014)

πŸ’» Technical Skills

πŸ’‘ Category βš™οΈ Skills
πŸ“ Languages Bash, Python
πŸ› οΈ Tools Docker, Kubernetes, Jenkins, GitLab CI/CD, Terraform, Ansible
☁️ Cloud AWS (EC2, S3, IAM), GCP
πŸ“Š Monitoring Prometheus, Grafana, Fluentd
πŸ’» Infrastructure Linux Administration, Infrastructure as Code (IaC)

πŸ”§ Hands-on Experience with Tools

πŸ–₯️ Zabbix - Docker Compose Monitoring Solution

Project: Docker Compose - Zabbix NGINX PostgreSQL + Grafana

  • Integrated Zabbix for collecting system metrics and visualized them using Grafana.
  • Configured and deployed PostgreSQL, Zabbix Server, Zabbix Frontend (NGINX), Zabbix Agent, and Grafana.
  • Implemented a structured .env configuration to facilitate seamless deployment.
  • Automated backup and restoration of the database using custom scripts.
  • Optimized performance tuning and data source configuration in Grafana.

πŸ”— Resources:

πŸ–₯️ Virtualization Platforms - Proxmox, Hyper-V, VMware

  • Installed and configured virtualization platforms, including Proxmox, Hyper-V, and VMware.
  • Set up and managed virtual machines for various environments.
  • Configured networking and storage for optimal performance.
  • Implemented automated backup strategies for VM snapshots and recovery plans.
  • Optimized resource allocation to improve virtual machine performance and efficiency.

πŸ–₯️ Linux & Windows Server Administration

  • Installed, configured, and maintained Linux and Windows servers.
  • Performed security hardening and implemented patch management.
  • Set up automated backup solutions and recovery strategies.
  • Monitored system performance and optimized resource usage.
  • Managed user permissions, Active Directory (for Windows), and network policies.

πŸ–₯️ PG Back Web - PostgreSQL Backup Management

Project: Deployment and Configuration in Docker Environment

  • Deployed and configured PG Back Web in a Docker environment for PostgreSQL database backup management.
  • Integrated PostgreSQL, ensuring stable connectivity and troubleshooting authentication and network issues.
  • Configured MinIO/S3 storage for remote backups, ensuring secure and efficient storage management.
  • Set up Traefik reverse proxy for secure access with SSL/TLS certificates.
  • Automated deployment using Docker Compose and Ansible, making the setup easily reproducible.
  • Verified successful database migrations and tested recovery scenarios to ensure data integrity.

πŸ”— Key Technologies:
Docker, PostgreSQL, MinIO/S3, Traefik, Ansible, Backup & Restore Automation

πŸ–₯️ LLDAP - Lightweight LDAP Server in Docker + GraphQL Automation

Project: Mass User Provisioning with Custom Attributes

  • Deployed and configured LLDAP with PostgreSQL backend in a Dockerized environment using docker-compose.
  • Set up custom environment variables and secure connections with healthchecks and volume persistence.
  • Implemented GraphQL API queries to automate creation of 5000 users with custom attributes such as ats-2, mats, and any_number.
  • Generated bulk user payloads using jq and automated requests with Python scripts using JWT token authorization.
  • Used lldap_set_password CLI tool to securely assign passwords post-creation.
  • Ensured high performance and successful integration between PostgreSQL, LLDAP, and management APIs.

πŸ”— Key Technologies:
Docker, LLDAP, GraphQL, PostgreSQL, Bash, jq, Python, JWT, Docker Compose


⭐ Certifications

  • πŸ“œ DevOps Course @ DAN.IT Education (Issued January 2025)

    • Covered Linux Boot Process, CI/CD pipelines, Docker, Kubernetes, AWS services, and Terraform.
    • Gained expertise in monitoring with Prometheus, Grafana, Fluentd, and ELK Stack.
  • πŸ›‘οΈ MikroTik Certified Network Associate (Issued February 2024, Valid Until February 2026)

    • Mastered configuration of RouterOS, network interfaces, and routing protocols.
  • ☁️ Google Cloud Fundamentals: Core Infrastructure (Issued November 2023)

    • Learned Google Cloud basics, CLI tools, and infrastructure management.
  • ☁️ AWS Educate Certifications:

    • Getting Started with Compute (Issued January 2024)
    • Getting Started with Networking (Issued January 2024)
    • Getting Started with Storage (Issued January 2024)
    • Introduction to Cloud 101 (Issued January 2024)
  • πŸ” "Program for Vulnerability Disclosure (VDP)" @ CRDF Global (Issued December 2023)

    • Studied network security, vulnerability assessment, and incident response.

πŸš€ Favorite Tech

Bash Python Docker Kubernetes Terraform Prometheus Grafana AWS
🐚 Bash 🐍 Python 🐳 Docker ☸️ Kubernetes πŸ“œ Terraform πŸ“Š Prometheus πŸ“ˆ Grafana ☁️ AWS

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