Senior Firewall & Security Infrastructure Engineer

Eircom Limited; Location (WV); On-site; USD 120,000 - 170,000; Full time

Job summary

eir is seeking aSenior Firewall Engineer to join a team of network and security infrastructure professionals delivering managed services to a large Irish enterprise client. The role focuses on design, implementation, operation and ongoing support of enterprise firewall and application security platforms, with emphasis on Check Point and F5 technologies.

You will lead solution design and delivery, drive improvements, and work with engineers, management and customers to define objectives and

Qualifications

• Strong hands-on experience with Check Point firewalls.
• Operational experience with F5 LTM/SSL.
• Enterprise network security operations experience.
• Advanced level: +10 years’ experience - CCNP/CCSP grade or higher
• Proven experience in large site environments within solution design, deployment delivery and management.
• Strong interpersonal, influencing, and communications skills with the ability to interact effectively with internal stakeholders at all levels within the business and external customer.
• Strong track record of effectively assessing and managing competing priorities.
• Excellent communication and relationship development skills
• Advanced Checkpoint or similar Next-Gen enterprise firewall with exposure to solution design, install, patch, maintain, operate

Responsibilities

• Firewall & Security Operations. Configure, manage, and support Check Point firewalls, including policy management, rule optimisation, NAT, VPNs, and security updates
• Perform firewall audits, rule reviews, and optimization
• Operate and maintain F5 LTM and SSLi environments
• SSL certificate lifecycle management
• OS patching, upgrades, backups, and health checks
• Support incident response, troubleshooting and RCA across security infrastructure.
• Perform planned changes, upgrades, patching, and lifecycle management of network and security platforms.
• Manage infrastructure reliability, ensuring availability, performance, resilience, and compliance with agreed SLAs.
• Contribute to and validate high-level and low-level designs, ensuring secure, scalable, and supportable solutions.
• Prepare and deliver customer-facing security reports, technical briefings covering firewall operations, threat activity, policy compliance, risk exposure, and remediation recommendations.

Skills

Check Point firewalls

F5 LTM/SSL

Enterprise security operations

Strong communication

Leadership

Education

CCNP/CCSP or higher

Job description

eir is seeking aSenior Firewall Engineer to join a team of network and security infrastructure professionals delivering managed services to a large Irish enterprise client. The role focuses on design, implementation, operation and ongoing support of enterprise firewall and application security platforms, with emphasis on Check Point and F5 technologies.

You will lead solution design and delivery, drive improvements, and work with engineers, management and customers to define objectives and