Berkay Yetgin - System Specialist

SUMMARY

System Specialist proficient in System Engineering and DevOps practices, managing production-grade virtualization and container infrastructures (Proxmox, Docker). Approaching operational workflows with an engineering mindset, I have delivered infrastructure modernization through PowerShell automation and critical Group Policy optimizations. Passionate about solving complex problems via CI/CD pipelines, with a strong focus on transitioning into System Administrator / DevOps Engineer roles.

TECHNICAL SKILLS

Systems & Infrastructure

Windows Server, Active Directory, Entra ID, SCCM, PowerShell, Group Policy, ManageEngine ServiceDesk Plus, Xurrent ITSM, Exchange Online, Office 365

Cloud, DevOps & Virtualization

AWS (EC2, S3), Jenkins, CI/CD Pipelines, Kubernetes Concepts, Proxmox VE, Docker, Docker Compose, LXC, GitHub Actions

Networking & Security

FortiGate, Cisco Switches, Cloudflare Tunnel, VPN, VLAN, Firewall Configuration, Zero Trust Architecture

WORK EXPERIENCE

IT Specialist

TÜPRAŞ | November 2023 - Present

Engineered WMI-based PowerShell automation scripts to mass-deploy critical BIOS security configurations (Secure Boot) via ManageEngine, enforcing enterprise compliance
Optimized application packaging workflows by reverse-engineering registry keys to develop silent install/uninstall scripts for the self-service portal
Performed Root Cause Analysis (RCA) on complex Group Policy failures, identifying architectural logic errors and implementing permanent fixes to enhance infrastructure stability
Managed Active Directory and Entra ID operations: user lifecycle, security groups, and MFA configuration
Delivered comprehensive technical support to 3000+ users via ITSM tools, maintaining high SLA standards

IT Specialist

STT TÜRK GAZBETON | December 2022 - November 2023

Provided comprehensive L1-L2 technical support: hardware/software troubleshooting, user account management, and daily IT operations
Administered Windows Server infrastructure: Active Directory user/group management, Group Policy configuration
Managed network security and infrastructure: FortiGate firewall configuration, Cisco switch management, VLAN segmentation
Maintained virtualization platforms: VM provisioning, configuration, and resource optimization on VMware vSphere and Hyper-V
Implemented regular backup strategies for critical systems and conducted disaster recovery testing

Technical Support Representative

AssisTT | October 2015 - November 2016

Provided ISP network troubleshooting for residential and business customers
Delivered technical support for connectivity and service quality issues

PROJECTS

Proxmox Homelab Automation

Technologies: Proxmox VE, LXC, Docker, Bash Scripting, GitHub Actions, Prometheus, Grafana, Cloudflare Zero Trust

Declarative Infrastructure (IaC): Engineered a Bash-based idempotent automation suite managing the entire server fleet as a "Single Source of Truth" via stacks.yaml
Zero Trust Architecture: Designed a secure, closed-port access model utilizing identity-aware Cloudflare Tunnels and "Defense in Depth" principles to replace traditional port forwarding
Secure Virtualization: Implemented hardware-isolated NVIDIA GPU passthrough and nested Docker optimization within Unprivileged LXC containers using cgroup v2 rules
Continuous Delivery & Observability: Automated CI/CD image pipelines via GitHub Actions, AES-256-CBC GitOps secrets management, and Full-Stack telemetry with Prometheus, Loki, and Grafana
Business Continuity (DR): Multi-layered disaster recovery strategy adhering to the 3-2-1 rule, featuring local ZFS snapshots and encrypted, deduplicated cloud synchronization via Google Drive
GitHub: github.com/Yakrel/proxmox-homelab-automation

AWS Cloud Infrastructure & CI/CD Implementation

Technologies: AWS (EC2, S3), Jenkins, GitHub Webhooks, Linux Administration, Bash Scripting

AWS Infrastructure Provisioning: Deployed and managed EC2 instances for production-like workloads, configuring Security Groups (firewalls) to secure SSH and web traffic
CI/CD Pipeline Automation: Designed a Jenkins-based CI/CD pipeline integrated with GitHub Webhooks to trigger automated builds and deployments immediately upon code push
Cloud Storage Solutions: Utilized Amazon S3 for scalable object storage and configured Static Website Hosting for high-availability frontend content delivery
Architectural Decision (Kubernetes vs Docker): Analyzed Kubernetes architecture (Pods, Nodes, Services) and opted for Docker Compose after performing a resource efficiency (overhead) and operational complexity analysis for a single-node environment

Wabbajack Library Cleaner

Technologies: Rust, File System Automation, Windows & Linux

Intelligent Parsing: Developed a native desktop utility for Windows and Linux that parses .wabbajack modlist files (JSON/ZIP) to map dependencies and detect orphaned mod files
System Safety: Implemented robust file-locking mechanisms and heuristic size analysis to ensure data integrity during file operations
Community Impact: Actively used by the modding community (100+ downloads) to solve real-world storage optimization problems
Website: cleaner.byetgin.com | GitHub: github.com/Yakrel/wabbajack-library-cleaner

Wabbajack Library Cleaner - Project Website

Technologies: Astro (SSG), Tailwind CSS v4, TypeScript, GitHub Actions

Development: Built the official product website using Astro (SSG) and Tailwind CSS v4 for maximum performance and SEO.
High-Performance Architecture: Engineered a 99+ Lighthouse score documentation site using Astro's static site generation and Zero-JS approach
Modern UI/UX: Designed a responsive, dark-themed interface using Tailwind CSS v4, focusing on product storytelling and user guidance
Documentation & Support: Developed a structured layout to explain complex technical features (Smart Detection, Orphan Cleanup) through intuitive visual cards
Source: github.com/Yakrel/wabbajack-library-cleaner-site

Repackarr

Technologies: SvelteKit 5, TypeScript, SQLite, Drizzle ORM, Docker, Node.js

Full-Stack Development: Built a self-hosted web application for automated game repack management, integrating qBittorrent, Prowlarr, and IGDB APIs
Smart Parsing: Developed a version detection engine capable of extracting version strings from torrent titles and tracker pages across major repackers (FitGirl, DODI, ElAmigos)
Automation: Implemented scheduled update scanning, real-time progress tracking (SSE), and one-click magnet dispatch to qBittorrent
GitHub: github.com/Yakrel/repackarr

EDUCATION

Bachelor's Degree - Management Information Systems

Anadolu University | 2025 - Present

Associate Degree - Electronics Technology

Kırıkkale University | 2011 - 2014

CERTIFICATES

LANGUAGES

Turkish (Native)
English (Professional Working Proficiency)