We are seeking a Senior Specialist – IT Security to join our team at Marsh. This role will be based in Mexico City. This is a hybrid role that has a requirement of working at least three days a week in the office. As a Senior Specialist – IT Security, you will join the Security Architecture team within Marsh’s Network & Security Infrastructure (NSI) organization. This role focuses on the governance, review, and approval of firewall security controls across a general enterprise environment. The position emphasizes control assurance, policy compliance, and thoughtful analysis of security controls, rather than day‑to‑day firewall operations.
We will count on you to:
Review and approve firewall change requests submitted through formal change management processes.
Assess firewall changes and existing rules for alignment with internal security requirements, architectural standards, and least privilege principles.
Identify non compliant or higher risk changes and support resolution through established risk acceptance processes.
Perform periodic and targeted reviews of deployed firewall rules to validate ongoing compliance.
Analyze complex and layered rule sets, including understanding historical changes and prior design decisions.
Provide security oversight for enterprise firewall environments, including Palo Alto Networks, cloud native firewalls, and Kubernetes based platforms.
Maintain documentation and evidence to support governance, audit, and control assurance activities.
Partner with network, cloud, and platform teams to provide clear, practical security guidance.
Contribute to improvements in firewall governance processes through standardization and supporting tools.
What you need to have:
3–4 years of experience in IT security, network security, or a related discipline.
Experience reviewing, assessing, or governing firewall rules in enterprise environments.
Strong understanding of network security concepts, segmentation, and access control.
Experience working wi
📌 Senior IT Security Specialist (Ciudad de México)
🏢 Marsh
📍 Ciudad de México
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