Yassin Eftini

I’m an experienced System Administrator with expertise in managing Linux and BSD systems. I specialize in network security, having worked extensively with Next-Generation Firewalls (NGFW), and optimizing network infrastructures. I also have strong experience in containerization, deploying Docker containers on a VPS. With a background in penetration testing, I’m focused on identifying and addressing security vulnerabilities to ensure robust infrastructure. I’m passionate about staying current with new technologies.

• DNW AG 07/2025 -

  System Administrator Berlin, Germany

• DNW AG 02/2024 - 07/2025

  CS Expert - Apprentice Berlin, Germany

  Responsibilities:

  • Administration of NGFW firewalls
  • Administration of GNU/Linux systems on single board computers such as Raspberry Pi
  • Development and optimization of network architectures
  • Administration and monitoring of network infrastructure
  • Setting up and supporting virtualization platforms such as VMware ESXi and KVM

• Crealytics GmbH 08/2022 - 01/2025

  CS Expert - Apprentice Berlin, Germany

  Responsibilities:

  • IT Onboarding for employees
  • Support and maintenance of the internal Windows infrastructure
  • Administration of IT resources and access control for internal tools

• Crealytics GmbH 06/2022 - 07/2022

  Inhouse IT-Support Berlin, Germany

  Responsibilities:

  • IT-Support

• OSZ Informations- und Medizintechnik 09/2022 - 07/2025

  Computer Science Expert - IHK EQF Level 4

  Berlin, Germany

• Hochschule Mainz 03/2019 - 02/2021

  X

  Mainz, Germany