Istanbul, Istanbul, Türkiye
Senior Linux/Unix System Administrator specializing in Cloud Infrastructure Automation and Enterprise System Management. I focus on transforming manual operations into automated, scalable, and secure Infrastructure as Code (IaC) workflows. Advanced AWS & IaC Workflows: -Infrastructure Provisioning: Architecting modular AWS environments using Terraform, managing full-stack EC2 lifecycles including EBS Root Block Device optimization (gp3, Encryption at rest, IOPS tuning). -Identity & Access Management: Expert in AWS CLI multi-profile orchestration (config/credentials) and implementing secure authentication for automated CI/CD and Terraform providers. -Automated Configuration (Provisioning): Implementing advanced Terraform Provisioners (file, remote-exec) to automate system hardening, OS-level configuration, and security agent deployments (Trend Micro, Tripwire, etc.). Hybrid Virtualization: Extensive experience in managing OpenShift clusters and KubeVirt for unified container and VM orchestration. Experience Section: Digiturk -End-to-End AWS Automation: Designed and deployed RHEL 9 infrastructures on AWS via Terraform, automating VPC/Subnet mapping and Security Group ingress/egress policies. -Automated System Provisioning: Streamlined post-deployment processes by using Terraform to inject scripts and binaries, ensuring 100% consistent server baselines. -Advanced Monitoring Integration: Installed and integrated Zabbix 7.2 (Server & Agent2) with AWS workloads for proactive performance tracking and alerting. Storage & Platform Migration: Led P2V/V2V migration projects and managed EBS-backed storage scaling for high-traffic Linux/Unix environments. Refined Technical Toolkit -Cloud/IaC: AWS (EC2, VPC, IAM, EBS), Terraform, AWS CLI (Profiles/SSO). -Automation/CI-CD: Ansible, ArgoCD, Jenkins, Bash & Python Scripting. -Enterprise OS: RHEL 7/8/9, Solaris SPARC/LDOM, Oracle Linux. -Platform/Virt: OpenShift, KubeVirt, Kubernetes, VMware ESXi, KVM. -Observability: Zabbix 7.2, Grafana, ELK Stack, Graylog. -Enterprise Management: Red Hat Satellite, ManageEngine Endpoint Central, Device42,Foreman. I hold an associate degree in Computer Programming from Kırklareli University and am currently pursuing a bachelor's degree in Management Information Systems at Anadolu University.
Designed AWS infrastructure automation (IaC) processes using Terraform, encompassing the end-to-end management of VPC/Subnet-based network planning, EC2 provisioning, automated server configuration and agent installations, as well as resource tagging and technical reporting. Designed and developed an advanced IaC (Infrastructure as Code) architecture utilizing Terraform and Jira REST API integration for the end-to-end automated provisioning of Linux and Windows virtual machines on Hyper-V Clusters (including dynamic resource allocation, network/VLAN, Domain Join, and Update configurations via Posh-SSH and PowerShell Direct, as well as real-time Jira reporting).
Zabbix: Experienced in installing and integrating Zabbix Server 7.2 with Zabbix Agent/Agent2. Third-Party Agents: Gained experience in the installation and administration of third-party agents such as Trend Micro, Tripwire, and NetBackup. ManageEngine Endpoint Central: Effectively managed package deployment, server update automation, and reporting processes with scheduled tasks using ManageEngine Endpoint Central. Linux/Unix Systems: Expertise in the installation, configuration, security hardening, and performance optimization of Linux/Unix systems such as RHEL 7/8/9 and Solaris SPARC/LDOM. (Intermediate level proficiency in Unix Servers.) Network Tools: Responsible for the installation and administration of key network tools such as HAProxy, phpIPAM, and Device42. Cloud and Container Technologies OpenShift and KubeVirt: Managed KVM-based virtual machines (KubeVirt) on OpenShift, including cluster operations such as adding/removing nodes and capacity planning. Kubernetes and CI/CD: Successfully managed Kubernetes environments and integrated CI/CD pipelines using tools like Ansible and ArgoCD. Turkcell Cloud: Knowledgeable in managing and configuring cloud services on Turkcell Cloud. Automation and Infrastructure Management Red Hat Satellite and Foreman: Efficiently handled repository management, operating system updates, and firmware upgrades using Red Hat Satellite and Foreman. Script Development: Developed various scripts using Bash and Python to automate operational processes.
Conducted UDP and TCP stress testing using Nmap and Netcat. Performed operational management and administration of Elasticsearch and Kibana. Executed Logical Volume Management (LVM) operations. Managed Proxmox and ESXi virtualization platforms. Configured Palo Alto integrations and TLS settings. Developed shell scripts for log generation and configured remote log forwarding via UDP. Installed Grafana and managed its plugin configurations. Installed, configured, and managed ClickHouse databases. Installed Lynis and conducted system security audits/checks. Configured and managed PAM (Pluggable Authentication Modules) password security operations. Installed NixOS and managed system configurations by editing configuration.nix. Installed and administered Logsign SIEM. Installed and operated Nessus for vulnerability scanning and assessments.
Installed and managed Graylog Server and Nxlog for monitoring operations. Installed and managed Elasticsearch and Kibana. Installed and administered Ansible. Installed and managed Security Onion. Performed the installation and version upgrades of Apache Tomcat, Nginx, and Java on Linux environments. Installed and administered Zabbix Server and Zabbix Agents for comprehensive monitoring. Automated the deployment of .war applications to targeted Tomcat servers (via port 8080) using Jenkins. Created and maintained documentation on GitLab, and integrated development projects with Jenkins pipelines. Administered GitBook and automated documentation updates through GitLab CI/CD (gitlab-ci.yml). Installed and managed the Netdata open-source monitoring tool. Analyzed system logs proactively to identify and mitigate potential component deficiencies and security vulnerabilities. Managed and monitored automated file replication across storage systems using rsync and lsyncd, including scheduled cron jobs (Crontab) for periodic synchronization. Installed and administered Docker. Containerized existing applications using Docker Compose and orchestrated their deployment within isolated networks. Converted legacy .war applications (previously running on Tomcat) to .jar format using Maven, subsequently containerizing them with Docker. Installed Samba servers and managed their integration with client machines. Configured network access restrictions and security rules for test environments using iptables. Managed storage mounting operations utilizing NFS and Samba protocols. Installed and administered Sonatype Nexus Repository. Installed, configured, and managed CentOS (7/8/9) and Ubuntu (18.04/20.04) operating systems.
Led the Quality Assurance (QA) and User Acceptance Testing (UAT) processes for developed applications (including C#-based software) prior to end-user deployment. Conducted comprehensive functional and user experience (UX) tests, providing detailed bug reports, system analyses, and actionable feedback to the software development team.
Collaborated within a team of 5 junior interns to design and develop a C#-based reporting automation for optimizing inbound/outbound material tracking and inventory management.