IT Security Senior Engineer

Join a dynamic team at the pulse of global markets, where we deliver innovative software and service solutions for essential financial reporting and capital markets transactions. Enjoy competitive compensation, a flexible workplace, comprehensive benefits, and opportunities for professional growth. The Senior Network Security Engineer provides advanced engineering expertise and technical leadership for enterprise network security across cloud and on-prem environments. This role leads complex designs and implementations, serves as a senior escalation point for major incidents, and drives modernization initiatives aligned to DFIN’s Zero Trust strategy. The senior engineer mentors other engineers, shapes standards, and partners with stakeholders to deliver secure, scalable, and resilient network security platforms.
Lead the design of secure architectures for LAN/WAN, hybrid cloud, and SaaS environments; Advanced Network Security Engineering

Design Azure connectivity and security controls at scale (hub/spoke, shared services, private connectivity, routing strategy).
Act as Level 3 escalation for high-severity incidents; Lead root-cause analysis, author post-incident reports, and drive systemic fixes and resilience improvements.
Establish and improve runbooks, operational metrics, and reliability practices for owned platforms; Define automation standards for network/security workflows; Partner with platform engineering to embed secure connectivity controls into CI/CD and infrastructure-as-code pipelines.
Influence stakeholders by presenting options, risks, and recommendations; Enterprise firewalls (on-prem and cloud), WAF, DDoS protection, API security, and load balancing
identity-integrated access and policy strategies
Azure network architecture at scale (hub/spoke, routing, private endpoints, shared services, resiliency patterns)
Advanced automation/scripting (Python/PowerShell), CI/CD, and infrastructure-as-code practices
Bachelor’s degree in Computer Science, IT, or related field (preferred) or equivalent experience.
~7–10+ years of hands-on experience in network security engineering, including cloud networking and enterprise platforms.

Cloud networking/security certifications (Azure preferred; AWS/GCP a plus).
Deep expertise in firewall/WAF policy architecture, routing, segmentation, and cloud networking controls.
Experience designing operationally sustainable solutions (documentation, runbooks, lifecycle management, monitoring).
Ability to communicate complex architecture and risk decisions to both technical and business stakeholders.
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