Über Nick
Enterprise Network Security Architect | 18 Years | 280+ Firewall Migrations | DAX Clients
Senior security consultant specialising in large-scale firewall migrations, hybrid cloud security architecture, and AI-driven security automation. 18 years delivering enterprise network security for Europe's largest organisations — Porsche, BASF, Allianz, Vattenfall, Deutsche Bank, Sony, SAP, Prudential, and Worldline.
Core expertise: Palo Alto (Panorama, Cortex XDR, XSOAR), Check Point (VSX, Gaia), Cisco Firepower/ASA, Fortinet NGFW, and F5 Networks (LTM, GTM, WAF, APM). Deep Azure cloud security experience — ExpressRoute, NSGs, Azure Firewall, Microsoft Sentinel SIEM, Defender for Cloud, and hybrid cloud architectures.
Track record: 280+ firewall migrations across multi-vendor environments, VPN infrastructure for 1000+ users, PCI-DSS audit delivery, and ISO 27001 compliance programmes. Recently combining infrastructure security with AI automation — automated threat detection pipelines, policy optimisation, and security workflow orchestration.
Available immediately for freelance contracts. Based in Limassol, Cyprus. Fully remote with flexibility for occasional on-site across Europe. English (native), German (fluent).
Englisch
Muttersprachlich oder zweisprachig
Deutsch
Muttersprachlich oder zweisprachig
Vor Ort möglich
Mannheim (bis zu 50 km)
Projekt- und Berufserfahrung
- Worldline (Remote)Network Security ConsultantBANKEN & VERSICHERUNGENNovember 2024 - Dezember 2025 (1 Jahr und 1 Monat)• Planning, expansion, and operation of high-availability network infrastructure for uninterrupted data centre operations in PCI credit card environment & PCI audit• Firewall migration from Check Point to Palo Alto; implementation and administration of F5 load balancers for performance optimization and failover resilience• Administration of Check Point, Fortinet, and Cisco Firepower firewalls; Cisco Nexus, routers & switches, Cisco ACI• Management and hardening of Azure network security: NSGs, Azure Firewall Rules, VNet segmentation and access control in hybrid cloud environment• Customization and optimization of firewall and security systems to highest security standards• Proactive network security monitoring using Splunk SIEM and Azure Monitor for threat detection and attack impact mitigation
- Fujitsu – Manage nowSecurity ConsultantApril 2024 - Oktober 2024 (6 Monate)• Multi-cloud connectivity: Design and implementation of Azure ExpressRoute connections with BGP optimization• Azure network security: Configuration and management of Azure NSGs, network segmentation and access control in hybrid cloud environments• VPN architecture: Deployment of route-based and policy-based VPN solutions in multi-VRF environments• Customer engagement: Leading technical kickoffs and PoC implementations for enterprise clients based on as-is network analysis• Migration leadership: Execution of seamless data center migrations — VPN, fixed connection, WAN connectivity to new target platforms• Setting up VPN tunnels, testing and implementing data lines, troubleshooting connections• Technologies: Cisco Routing & Switching, Check Point Firewalls, Azure Cloud Integration
- Mann und Hummel,Security ConsultantAugust 2023 - April 2024 (8 Monate)71 Ludwigsburg, Germany• Consulting and review of HLD/LLD network security architectures for Palo Alto and Fortinet (NGFW) firewalls deployed in Azure (Azure Firewall, NSGs, VNet Peering, Azure Private Endpoints)• Analysis of firewall system landscape and design & implementation, migration to Cortex XDR and XSOAR (Security Orchestration & Automation)• Configuration and management of Azure Network Security Groups (NSGs), Application Security Groups (ASGs) and Azure Firewall Policies for Zero Trust network segmentation• Troubleshooting network security service requests/incidents and implementation of remediation measures, firewall cleanup of global firewall rule base• Analysis and evaluation using Microsoft Sentinel SIEM for threat detection and incident response, creation of KQL queries and automation via Sentinel Playbooks (Logic Apps)• Monitoring and hardening of Azure environment using Microsoft Defender for Cloud, compliance assessments and Security Posture Management• Project-related consulting for secure network changes & security requirements and implementation of IT Cloud Security Governance policies• Configuration and management of BGP peering with external ISPs and partner companies• Deployment of AI-driven analytics tools for threat detection optimization and automation of security workflows
Empfehlungen
Sei die erste Person, die Nick empfiehlt
Teile Deine Erfahrung aus der Zusammenarbeit mit diesem Freelancer.
Diese Freelancer passen auch zu Ihren Kriterien
Agatha Frydrych
Backend Java Software Engineer
4.7
(3)
2
Baptiste Duhen
Fullstack developer
4.6
(4)
5
Amed Hamou
Senior Lead Developer
4
(2)
7
Audrey Champion
Web developer
4.3
(3)
4
Ausbildung und Abschlüsse
- AI SecurityAI Security
- AI-900: Azure AI Fundamentals & AI-102: Designing and Implementing Azure AI Solutions & AZ-500: Microsoft Azure Security TechnologiesAI-900: Azure AI Fundamentals & AI-102: Designing and Implementing Azure AI Solutions & AZ-500: Microsoft Azure Security Technologies