Sr Systems Engineer

Join Entrust as an Infrastructure Engineer to monitor and manage network and security infrastructure across EMEA and North America. You will primarily handle firewall and network security administration, virtualization and storage support, collaborating with Cloud Services and senior IT engineers. The role requires UK nationality with potential SC clearance, with UK/Europe travel and occasional out-of-hours work. You’ll drive automation and tooling to improve efficiency and contribute to secure, reliable customer services in a global context.

• pension
• salary negotiable
• allowances
• career development
• flexible work arrangements
• opportunities for professional qualifications

• Configure and maintain Cisco ASA, Cisco FTD, and Palo Alto PA-Series firewalls
• Perform routine firewall patching, upgrades, and lifecycle management per change-control
• Manage ACLs, security policies, and network rules to meet security requirements
• Support firewall and network audits with evidence, remediation input, and technical support
• Administer and monitor VMware vSphere environments; patching and lifecycle management
• Maintain NetApp storage platforms; patching, configuration management, and fault resolution
• Develop and maintain automation for provisioning, config management, and compliance validation
• Identify repetitive tasks and implement automation to improve efficiency and reliability
• Leverage AI-assisted tools to aid troubleshooting, documentation, and service improvement
• Provide operational support for customer and internal cloud services; escalate complex issues
• Maintain accurate technical documentation and change records
• Collaborate with Infrastructure Operations, Security and customer-facing teams to resolve incidents
• Participate in out-of-hours support and planned maintenance
• Support change-control processes and performance monitoring of firewall health and security events

• Minimum of three years’ experience with firewalls, network switching and virtualization
• Experience with Cisco ASA, Cisco FTD, Palo Alto PA-Series
• TCP/IP networking, routing, NAT, VPNs
• VMware vSphere
• NetApp storage systems
• Windows Server and/or Red Hat Linux administration
• Operational monitoring, incident management and change implementation
• Experience with infrastructure automation tools (Ansible, Terraform)
• Scripting with PowerShell or Python; Git-based version control
• APIs and automation workflows integration
• Willingness to learn and pursue professional development

• Excellent problem-solving and attention to detail
• Strong collaboration and teamwork
• Effective communication with technical teams and stakeholders
• Cisco ASA firewall platforms
• Cisco Firepower Threat Defense (FTD)
• Palo Alto Networks PA-Series firewalls