15.01.2026 aktualisiert
100 % verfügbar
Network & Security Engineer
Graz, Österreich
Deutschland +2
Bachelor of Science in Wirtschaftsinformatikinfo: Deutschland, Österreich, Schweiz
Skills
Technischer SupportArchitekturAutomatisierungCatalystCloud-SicherheitInformationssicherheitData CentersProjektplanungNexus 1000VWindows-DomäneProfinetAnsibleSicherheit VerwaltungVulnerability ManagementZabbix
- Cyber Security Training & Coaching
- Expertise in IT infrastructure security, cloud security, and security architectures.
- Cyber Security Services
- Conducting infrastructure/security reviews and certifications (Cyber Trust Austria).
- Network & Security Management
- Management of large-scale networks (over 30,000 endpoints) with a focus on LAN infrastructure and Azure Networking Services.
- Automation & Deployment
- Experience with deployment automation using Cisco Digital Network Architecture (DNA) and Ansible Automation Platform (AWX).
- Network Design & Planning
- Planning and designing data center and campus networks (Cisco Nexus/Catalyst).
- Operational Technology (OT) Networks
- Design and security implementation of OT networks (Aruba, Profinet, OPC) for intralogistics customers.
- Firewall Management
- Security management of inter-vlan and perimeter firewalls (Checkpoint, Fortigate, iptables).
- Vulnerability Management & Monitoring
- Conducting vulnerability management and monitoring using tools like Metasploit, Orca, Zabbix, and Nagios.
- Incident Resolution
- 3rd Level support for network incident resolution.
- System Administration & Security
- Administration and security management of Windows domain environments.
Erfahrung
Berufserfahrung5 - 10 Jahre
Freelancer seit2024
Sprachen
DeutschMutterspracheEnglischverhandlungssicherPolnischGrundkenntnisseSpanischGrundkenntnisse
Projekthistorie
Cyber security training on topics like it infrastructure security principles, cloud security or security architectures for SMBs.
Cyber security services like infrastructure/security review or certifications (Cyber Trust Austria).
Portfolio on holisec.com
Cyber security services like infrastructure/security review or certifications (Cyber Trust Austria).
Portfolio on holisec.com
Main Work:
- Management and security oversight of internal group-wide networks, with a focus on the LAN infrastructure & Azure Networking Services (over 30 000 endpoints).
- Responsible for deployment automation using Cisco Digital Network Architecture (DNA) and Ansible Automation Platform (AWX).
- Planning and designing of data center and campus networks for the integration of new locations (Infrastructure based on Cisco Nexus/Catalyst).
- Redesigning the campus access switch provisioning process with a fully automated, idempotent deployment using Infrastructure as Code (IaC) with Cisco DNA CLI Templates and Ansible Playbooks.
- Design of a new customer support access network with geo-redundant(ovpn smart routing), automatically provisioned gateways (kubernetes,openvpn,awx), built on Zero Trust principles.
- Group-wide migration of VoIP services to the cloud, integrating Voxtron and Alcatel technologies with M365 and Teams Calling to create a converged unified communication solution across all locations.
Main Work:
- Design and security implementation of OT networks (Aruba, Profinet, OPC) for customers in the intralogistics sector.
- Management and security oversight of inter-vlan & perimeter firewalls (checkpoint,fortigate,iptables).
- Vulnerability management & monitoring for internal IT assets (Metasploit, Orca, Zabbix, Nagios).
- 3rd Level support for customer network incident resolution.
- Built a physical HA server cluster using HPE servers and Pacemaker on OL9, hosting core services like DHCP (dhcpd), DNS(dnsmasq), network logging (rsyslog), IP asset management (phpipam) and implemented a certification authority for a secure customer support network access (openvpn, easy-rsa, iptables).
- Redesign of the data center network by replacing Cisco Catalyst 6500 core switches with Cisco Nexus, implementing MC-LAG for link redundancy and HSRP for gateway failover to enhance availability.