Network Security Engineer - (Palo Alto Firewall Mangement)

Network Security Engineer – Palo Alto Firewall Management

Grant Thornton Advisors LLC and Grant Thornton Ireland (GT) have recently come together to form a powerful multinational, multidisciplinary platform that delivers premier advisory, tax, and independent audit services. With $2.7 billion in revenues and nearly 60 offices across the U.S., Ireland, the UAE, and other territories, our combined platform brings enhanced solutions and capabilities supported by cutting-edge technologies and a team of nearly 13,000 quality-driven professionals.

Grant Thornton Ireland contributes nearly 3,000 people across 9 offices in Ireland, the Isle of Man, Gibraltar, and Bermuda, and is part of a global network of over 68,000 professionals spanning more than 149 countries. Together, we offer a truly global reach backed by deep local knowledge and national expertise.

By joining forces, we strengthen our ability to act as trusted advisors who make business more personal — investing in relationships and empowering clients to make the right decisions for their organisations today and into the future. Whether working with the public sector to build thriving communities, partnering with regulators and financial institutions to build trust, or supporting diverse businesses to achieve their goals, Grant Thornton now provides a singular, seamless client experience grounded in collaboration, innovation, and a shared commitment to the issues that matter most.

At GT Ireland we don’t just predict your future, we build it.

A Career at GT

Looking for a more fulfilling role in professional services? One where fresh thinking, collaboration and diversity are valued? At Grant Thornton we do things differently.

What does this mean for you?

A career in a more inclusive working environment, a more collaborative work culture, a more supported, flexible working role, more possibilities to grow and more opportunities to help shape the future for your clients. We respect and value your experience. And we want you to bring your authentic self to work and be at your best. It is how it should be.

Grow with us

At Grant Thornton, we care about our people and work hard to make you feel valued. If you are looking to deepen and develop your skills, knowledge, and experience throughout your career, then that is what you will get, and more.

Position Overview

We are seeking a highly skilled Network Security Engineer with expertise in Palo Alto firewall administration and network security to join our global security team. This role will be responsible for designing, implementing, and maintaining secure network environments that support our worldwide operations. The engineer will play a key role in protecting the organization’s infrastructure, applications, and data against evolving cyber threats while ensuring compliance with regulatory and internal security standards.

Key Responsibilities

• Manage, configure, and maintain Palo Alto firewalls (on-premises and cloud) across global environments.

• Implement and optimize firewall policies, NAT rules, VPNs, and security profiles to enforce enterprise security standards.

• Monitor, analyze, and respond to firewall logs, alerts, and incidents in collaboration with SOC teams.

• Conduct regular firewall audits, rule base reviews, and risk assessments to ensure secure and efficient configurations.

• Support secure network design and architecture reviews for global projects, mergers, and technology deployments.

• Collaborate with global IT, cloud, and application teams to ensure seamless and secure connectivity.

• Assist with incident response by providing network security expertise during investigations and post-incident reviews.

• Maintain documentation of firewall policies, configurations, and operational procedures.

• Ensure compliance with corporate security policies, regulatory requirements, and industry best practices (ISO 27001, SOC 2, NIST, etc.).

• Participate in on-call rotation to support 24/7 global operations.

Qualifications & Skills

Required:

• Bachelor’s degree in computer science, Information Security, or related field (or equivalent experience).

• 5+ years of experience in network security engineering with strong hands-on expertise in Palo Alto Networks firewalls (PAN-OS, Panorama).

• Solid understanding of TCP/IP, routing, switching, DNS, VPNs, and network segmentation.

• Experience with GlobalProtect, App-ID, User-ID, and Threat Prevention modules.

• Familiarity with SIEM, IDS/IPS, and network monitoring tools.

• Strong troubleshootin