Sr Principal Network & Security

Job Description: As a Senior Principal Network Security Engineer at Northern Trust, you will be responsible for leading the design, engineering, and delivery of complex, multi-team network security initiatives. Your role will involve owning end-to-end technical execution for enterprise perimeter, internal segmentation, and application delivery controls, with deep hands-on expertise in Check Point firewalls and F5 load balancers. You will serve as a technical authority, driving architecture decisions, mentoring engineers, and ensuring operational resiliency through automation, rigorous troubleshooting, and incident mitigation. Key Responsibilities: - Lead the engineering delivery of complex network security and application delivery projects involving multiple teams, vendors, and stakeholders. - Architect, implement, and operate Check Point firewall solutions including policy lifecycle management, NAT strategy, VPN solutions, and threat prevention capabilities. - Design and engineer F5 load balancing solutions with a strong understanding of traffic management, TLS, application health, and high availability. - Develop and maintain automation for network security operations (e.g., configuration management, policy deployment, compliance validation, telemetry, and reporting). - Act as the senior escalation point for critical incidents-debug, mitigate, and resolve high-severity outages and security events across network/security domains. - Establish engineering standards and reference architectures for firewalling, load balancing, routing/switching, wireless, and proxy capabilities. - Drive continuous improvement: reduce toil, improve MTTR, implement reliability patterns, and proactively address technical debt. - Partner with security engineering, infrastructure, application, and cloud teams to deliver secure-by-design solutions and ensure change safety. - Conduct deep root-cause analysis (RCA) and produce actionable post-incident improvements, runbooks, and automation enhancements. - Mentor senior engineers and provide technical leadership through design reviews, architecture boards, and operational readiness assessments. - Monitor and manage information system security incidents, troubleshoot, investigate, and implement countermeasures and mitigate the risk. - Plan the Network recovery / DR / resilience from malware / attacks, unauthorized access, and policy breaches. - Engage, interact, and coordinate with third-party Network / Telecom/ service providers during security incidents. - Analyze Network security trends and changes in threat and compliance environment and develop and execute plans for compliance and mitigation of risk. Qualifications Required: - Extensive, hands-on engineering experience with enterprise network security, including deep expertise in Check Point firewalls and F5 load balancers. - Demonstrated success leading complex, cross-functional technical initiatives from design through implementation and operational handoff. - Advanced knowledge of routing and switching, including dynamic routing (BGP/OSPF), redundancy, and troubleshooting at scale. - Strong understanding of wireless networking and secure web proxy concepts, including policy enforcement and traffic inspection. - Proven automation skills (required): scripting and/or infrastructure-as-code to integrate with CI/CD pipelines and ITSM workflows. - Significant experience troubleshooting and resolving critical incidents, including packet-level analysis and performance triage. - Ability to produce clear technical documentation: design artifacts, standards, runbooks, and post-incident reports. - Excellent communication and stakeholder management skills; able to influence architecture decisions and drive alignment. Job Description: As a Senior Principal Network Security Engineer at Northern Trust, you will be responsible for leading the design, engineering, and delivery of complex, multi-team network security initiatives. Your role will involve owning end-to-end technical execution for enterprise perimeter, internal segmentation, and application delivery controls, with deep hands-on expertise in Check Point firewalls and F5 load balancers. You will serve as a technical authority, driving architecture decisions, mentoring engineers, and ensuring operational resiliency through automation, rigorous troubleshooting, and incident mitigation. Key Responsibilities: - Lead the engineering delivery of complex network security and application delivery projects involving multiple teams, vendors, and stakeholders. - Architect, implement, and operate Check Point firewall solutions including policy lifecycle management, NAT strategy, VPN solutions, and threat prevention capabilities. - Design and engineer F5 load balancing solutions with a strong understanding of traffic management, TLS, application health, and high availability. - Develop and maintain automation for network security operations (e.g., configuration management, policy deployment, comp