Network Security Engineer

• Provide advanced technical support for enterprise networking and security products as a TAC Engineer, isolating, diagnosing, reproducing, and resolving issues promptly.
• Handle customer queries via phone, email, or virtual sessions, including regulated public‑sector and enterprise accounts.
• Reproduce issues in lab environments and deliver timely solutions with regular updates, recommendations, and action plans.
• Escalate cases per procedures, leveraging knowledge bases, experts, and tools for effective resolutions.
• Author technical documentation and knowledge base articles to contribute to knowledge‑sharing.
• Participate in discussions to share best practices and master emerging technologies within a specialization.
• Collaborate with engineering teams to solve complex problems.
• Act as primary contact for strategic or regulated accounts, managing high‑severity escalations with urgency and professionalism.

• EU citizenship and legal work authorization in the EU, meeting eligibility for sovereign/regulated environments.
• Bachelor's in Computer Science/Engineering or related field with 8+ years relevant experience (6+ in enterprise support), or Master's with 6+ years enterprise support.
• 6 years in Networking Security
• Fluency in English (written/verbal) with strong interpersonal skills for high‑stress situations.
• Proven ability to quickly learn and apply new technologies in customer‑facing roles.
• Strong logical problem‑solving, troubleshooting, and debugging skills for network issues across L2‑L7 layers.
• Willingness to work weekends/holidays as needed.
• Deep knowledge of core networking, virtualization, container orchestration (e.g., Kubernetes), and security fundamentals.
• Expertise in L2/L3 protocols (TCP, UDP, ARP, DHCP, ICMP, IPv4/IPv6, VLANs), OSI model, SSL, HTTP, proxies, and related technologies. xcfaprz
• Hands‑on experience with Palo Alto, F5 Load Balancers or similar, firewalls, software‑defined networking, and tools like Wireshark for packet analysis.
• CCNA or CCNP certifications required, plus experience as a TAC Engineer

Berkley Business & Technology is a specialist consultancy, recruiting professionals for organizations throughout Ireland, UK & Europe; for more information go to you would like to discuss this vacancy further or to discuss your career options in confidence, please send your profile to