Mustafa K.

DHL Global Aviation IT

Freelance Contractor as Linux System Administrator

- Keep server systems running smoothly and securely around the world, following DHL’s rules.

- Manage and update RHEL systems with Red Hat Satellite.

- Check system health using Centreon and Nagios to fix problems early.

- Use Ansible to automate tasks, making server and app management easier.

- Set up and maintain Apache and Tomcat servers for secure and fast performance.

- Help with OpenShift projects for managing container apps.

- Set up and assist with Jboss/Wildfly projects .

- Perform maintenance on systems and servers in DHL data centers worldwide.

- Plan and build server systems to support business needs now and in the future.

- Set up clustering to keep apps running with minimal downtime.

- Write scripts to automate tasks and reduce manual work.

As Linux System Administrator at Dioss Smart Solutions, I was responsible for maintaining nearly 100 Linux servers, ensuring their performance and security through effective system administration and monitoring.

Daily Responsibilities:

• Administer and optimize Linux servers (Ubuntu and Debian).

• Manage and configure network security solutions (OPNsense, Fortigate).

• Monitor IT infrastructure with Zabbix.

• Implement and maintain IPsec VPNs for secure data transmission.

• Configure and support Proxmox clusters with ZFS and Ceph.

As a DevOps Engineer at AUSY, I played a key role in deploying and managing Drupal and Symfony websites, integrating DevOps culture within a Linux environment to streamline processes and enhance performance.

• Deploy Drupal and Symfony web applications using a DevOps approach.

• Manage version control and CI/CD pipelines using GitLab and Bitbucket.

• Configure and optimize HAProxy, Varnish, Caddy and Nginx for better load balancing and performance.

• Enhance System Security: Implement and manage advanced security measures across development and production environments to safeguard sensitive data and ensure compliance with security standards.

• Optimize Resource Utilization: Analyze system metrics to identify bottlenecks and optimize resource utilization across multiple platforms, enhancing overall system efficiency and reducing costs.