- Access to a network of experts from various fields. - Competent and focused partner for diverse consulting needs.

- **Management and Verification of Network Permissions:** Ensuring correct and secure access controls within the corporate network. - **Cleanup of Network Permissions:** Removal of unnecessary or incorrectly set permissions to optimize network security. - **Project Support:** Assisting in various IT projects, ensuring compliance with guidelines, and advising on current network topologies. - **Network Documentation:** Creation and maintenance of detailed network documentation, including network topology and security protocols. **Key Projects:** - **Optimization of the firewall infrastructure:** Reduced rule complexity from 5000 to less than 1000 entries, significantly enhancing clarity and efficiency. - **Firewall Migration:** Successfully migrated from Palo Alto to Fortinet, achieving a 20% improvement in network security through optimization and the transfer of complex security policies. - **Branch Office Connectivity via SDWAN:** Implemented secure and stable SDWAN connections for branch offices, optimizing network communication. - **Azure Implementation:** Introduced and integrated Microsoft Azure into the existing IT infrastructure for efficient use of cloud services.

- **IT Operations Management:** Managed 15,000 physical servers and 50,000 virtual machines (VMs). - **Automation:** Automated server, application, and configuration installations using Puppet and Ansible. - **Ensuring High Availability:** Guaranteed high availability systems through effective patch management and monitoring. - **Project Consulting:** Provided consultancy for new projects with a focus on network security and infrastructure.

- **IT Operations Management:** Managed 1,000 physical servers and 2,000 VMs. - **Automation:** Automated server and application installation and configuration using Puppet and Ansible. - **Mail System Administration:** Managed Dovecot/Postfix and implemented a mail archive. - **Storage System Implementation:** Successfully implemented CEPH and cloud storage systems.