Viktor K.-Network Security Consultant - Projectmanager
Check rate
Experience
Security Operator
Pfeifer und Langen IT-Solutions GmbH
- Operational management of a hybrid Palo Alto Networks firewall infrastructure in an IoT environment
- Network zoning using VLANs
- Analysis, optimization, and security hardening of the rule set
- Implementation of additional firewalls in the infrastructure
- IP address management
- Security operations for Nozomi Networks’ IoT NRD solution
- Security operations for secXtreme’s honeypot infrastructure
- Managing service providers to ensure and implement required network measures
- Communication with customers and service providers in an international environment
- Technologies used: Palo Alto Networks, Panorama, Palo Alto AWS-cloud-Firewall, Nozomi Networks, Honeybox
Security Operator & Projektleitung
VdS Schadensverhütung GmbH
- Analysis of routing configurations in the network environment (firewall and core)
- Migration of the server network to a private cloud
- Optimization of routing configurations
- Optimization of the network topology
- Technical project management for network renewal
- Technologies used: Palo Alto Networks
Security Operator
QITS GmbH
- Analysis of routing configurations in the network environment (firewall and core)
- Migration of network gateways / VLANs from the core switch to the firewall
- Network segmentation to ensure valid communication between network devices
- Optimization of routing configurations
- Implementation of optimizations and security measures in the existing firewall rule set
- Best-practice changes in the firewall environment
- Optimization of the network topology
- Technologies used: Palo Alto Networks
Security Operator
Pfeifer und Lange IT Solutions
- Operational administration of a hybrid Palo Alto Networks firewall infrastructure (AWS and on premise) for an IoT network
- Zoning of the internal network to secure network boundaries / VLANs
- Incident handling and implementation of changes
- Standardization of the firewall infrastructure across the entire environment
- Security operations for Nozomi Networks’ NDR solution
- Support and monitoring of Crowdstrike endpoint security
- Communication with customers and service providers in an international environment
- Analysis and management of security incidents
- Technologies used: Palo Alto Networks, Panorama, Nozomi Networks, Crowdstrike
Projektleitung Infrastruktur Erneuerung einer Business-Unit
Melitta
- Delivery of an infrastructure renewal within a business unit (firewall)
- Managing service providers for the service transition
- Scheduling and planning the work
- Troubleshooting infrastructure issues at the site
- Leading a team of 2 people
- Technologies used: Cisco, Fortinet, FortiManager, Forti-Analyzer
Project Lead for Infrastructure Renewal of a Business Unit in Asia
Melitta
- Implemented an infrastructure renewal (firewall, switches, data center, Wi-Fi, VPN)
- Relocated a data center to a new site
- Rolled out Wi-Fi as part of a standardization project (global Wi-Fi SSID)
- Migrated IP networks
- Coordinated schedules and planned the work
- Managed a service provider and on-site staff to carry out the work
- Managed the project and documented activities
- Worked on-site abroad (Japan)
- Technologies used: Palo Alto Networks, Panorama, GlobalProtect, Cisco, vmware, FortiClient, FortiManager, Forti-Analyzer
Switch Migration Project Lead
Melitta
- Carried out a switch migration within a business unit
- Managed a service provider for the service handover
- Documented and prepared the switch configurations to be taken over for the rollout
- Technologies used: Enterasys Networks, Palo Alto Networks, Panorama, Cisco
Cyber Security Consultant
Herz- und Diabeteszentrum NRW
- Implemented network segmentation to secure servers
- Implemented security measures
- Analyzed logs to restrict access
- Technologies used: Palo Alto Networks, Panorama
Internal IT Consultant for Network and Security
Melitta
- Designed a global network infrastructure
- Managed service providers to ensure and implement required security measures in line with internal IT requirements
- Standardized an international infrastructure (firewall, LAN, Wi-Fi, VPN)
- Delivered projects of varying sizes in the network infrastructure environment of a globally operating IT organization
- Communicated with customers and service providers in an international environment
- Managed the local infrastructure components of a business unit (firewall, LAN, Wi-Fi)
- Technologies used: Palo Alto Networks, Panorama, GlobalProtect, Enterasys Networks, Fortinet, Cisco, FortiClient, FortiManager, Forti-Analyzer
Member of the Security Operations Team
DTS Systeme Herford
- Worked in IT systems operations
- Handled change tickets across various customer environments
- Implemented security measures in customer environments
- Migrated customer firewalls
- Technologies used: Palo Alto Networks
Firewall Migration Project Lead
Herz- und Diabeteszentrum NRW
- Project coordination for the migration from a Cisco ASA to a PaloAlto next-generation firewall
- Implementation of a high-availability firewall cluster
- Definition of an updated ruleset for secure access
- Management of service providers to carry out the migration
- Coordination of activities and alignment with stakeholders
- Security measure to implement network segmentation
- Technologies used: Palo Alto Networks, GlobalProtect, Cisco ASA
Network Engineer / Network Administration
Herz- und Diabeteszentrum NRW
- Architecture and design of a hospital network infrastructure
- Expansion and renewal of network components
- Network management within critical infrastructure
- Support with audits (KRITIS)
- Delivery of projects of various sizes in the network environment
- Ensuring a highly available network environment (HA concepts, failover tests)
- Technologies used: Palo Alto Networks, Panorama, GlobalProtect, Extreme Networks (Switch, WLAN), Enterasys Networks (Switch, WLAN), Cisco ASA, Lancom, HP
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Healthcare, Food and Beverage, Information Technology, and Insurance.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Information Technology, Project Management, and Operations.
Summary
Security—a word that can bring up very different emotions depending on your experiences. For me, it sparks a passion for securing corporate networks. Let’s work together to analyze the security of your network infrastructure and take it to the next level.
Skills
- Security Operator
- Network Security
- Cyber Security
- Firewall (Palo Alto)
- Project Management
- Friendly Personality
- Reliability
- Attention To Detail
- Focused Approach To Work
- Wlan
- Lan
- Switching
- Vpn
- Network Segmentation
- Network Management
- Network-Access-Control
- Troubleshooting
- Palo Alto Networks
- Globalprotect
- Panorama
- Enterasys Networks
- Enterasys Nac
- Extreme Networks
- Cisco
- Lancom
- Fortigate
- Hp
Languages
Certifications & licenses
Enterasys Certified Specialist - Routing NMS
Enterasys Certified Specialist - Switching NMS
Statistics
Experience
Global experience
Expertise
Qualifications
Frequently asked questions
Have questions? Find more information here.
Viktor is based in Kalletal, Germany and can operate in on-site, hybrid, and remote work models.
Viktor speaks the following languages: German (Native), English (Advanced).
Viktor has at least 14 years of experience. During this time, Viktor has worked in at least 10 different roles and for 7 different companies. The average length of individual experience is 1 year and 2 months. Note that Viktor may not have shared all experience and actually has more experience.
Based on recent experience, Viktor would be well-suited for roles such as: Security Operator, Security Operator & Projektleitung, Projektleitung Infrastruktur Erneuerung einer Business-Unit.
Viktor's most recent position is Security Operator at Pfeifer und Langen IT-Solutions GmbH.
In recent years, Viktor has worked for Pfeifer und Langen IT-Solutions GmbH, VdS Schadensverhütung GmbH, QITS GmbH, Pfeifer und Lange IT Solutions, and Melitta.
Viktor is most experienced in industries like Healthcare, Food and Beverage, and Information Technology. Viktor also has some experience in Insurance.
Viktor is most experienced in business areas like Information Technology, Project Management, and Operations.
Viktor has recently worked in industries like Food and Beverage, Information Technology, and Insurance.
Viktor has recently worked in business areas like Information Technology, Project Management, and Operations.
Viktor has 2 certificates. These include: Enterasys Certified Specialist - Routing NMS and Enterasys Certified Specialist - Switching NMS.
Viktor is immediately available for suitable projects.
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Calculated based on our freelancers’ daily rates as of 6 Nov 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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