Network Security Engineer Job at SiriusXM (Dublin)

Job Description

The Enterprise Network & Security team designs, secures, and operates the enterprise-facing infrastructure that provides critical interconnectivity for employees and partners. We are seeking a Network Security Engineer to strengthen our global security posture by focusing on the design, implementation, and management of next-generation firewalls, load balancers, and other network security platforms. The successful candidate will lead efforts to enforce security policies, improve resiliency, and ensure compliance across broadcast, data center, and enterprise network environments, while also mentoring peers and driving innovation in security best practices.

Job Responsibility

Design, implement, and manage enterprise firewalls, load balancers, and related network security platforms
Deploy, monitor, and optimize network security controls across enterprise, broadcast, and data center networks
Triage, diagnose, and resolve firewall, load balancing, and VPN-related incidents
Ensure compliance with InfoSec requirements and industry-standard security frameworks
Drive automation efforts to standardize firewall and security policy management (“security as code”)
Collaborate with InfoSec, broadcast engineering, and enterprise infrastructure teams to enforce security policies and respond to new requirements
Create and maintain documentation for security standards, policies, and operational procedures
Provide subject matter expertise on network security to cross-functional engineering teams
Participate in on-call rotation for operational network and security support

Requirements

Bachelor’s Degree in Computer Science, Computer Engineering, or related field
3+ years of experience working in enterprise network security environments
Excellent interpersonal, communication, and presentation skills
Ability to work independently and collaboratively in high-pressure environments
Strong organizational skills with the ability to handle multiple priorities
Commitment to delivering high-quality internal customer service
Proficiency with documentation and productivity tools such as Google Workspace, LucidChart/Visio, and MS Office
Hands-on expertise with Palo Alto firewalls, VPN technologies (GlobalProtect, AnyConnect, IPsec), and security policy enforcement
Strong experience with F5 load balancers (LTM/GTM/ASM/AFM) and traffic management policies
Knowledge of Cisco ASA firewalls and other major vendor platforms (Juniper, Arista, etc.)
Familiarity with zero-trust access control solutions (ClearPass, Cisco ISE)
Solid understanding of network protocols (TCP/UDP, IPv4/IPv6, BGP, OSPF, VXLAN, EVPN, IP Multicast)
Experience with automation frameworks (Python, Ansible, Terraform, Go) for network security operations
Skilled in network monitoring and troubleshooting tools (Wireshark, NetFlow, Syslog
OpenNMS, SolarWinds, or Datadog a plus)
Ability to take ownership of critical issues through resolution and support on-call rotations

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Network Security Engineer

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