Network Secruity Engineer

SANS; New York (NY); Remote; USD 120,000 - 160,000; Full time

Job summary

SANS is seeking a Sr. Network Engineer to lead hardening and modernization of our enterprise network infrastructure. This role focuses on auditing legacy configurations, enforcing strict segmentation, and guiding us toward a Zero-Trust architecture.

You will own firewall governance, decommission technical debt, and ensure alignment with internal GOIS mandates and external security standards across our global network.

Qualifications

• Must include governance of firewall rules and ACLs across global network.
• Experience implementing network segmentation and micro-segmentation strategies.
• Ability to decommission legacy infrastructure and migrate to modern platforms.

Responsibilities

• Audit and rationalize firewall rules and ACLs to remove redundant entries.
• Develop and enforce change procedures for firewall and ACL modifications.
• Design and implement segmentation strategies including VLANs and trust zones.
• Lead decommissioning of legacy networks and migration to standardized platforms.
• Maintain topology diagrams and ensure regulatory alignment.

Skills

Firewall governance

ACL management

Network segmentation

VLAN configuration

Zero Trust architecture

Regulatory compliance

Network documentation

Tools

Firewall platforms

ACL tooling

Network monitoring tools

Job description

PAYMENT IS ONLY ON W2. Please on corp to corp at all. Please no 3rd parties.

Job Title - Sr. Network Engineer

Location - Remote
Duration - 10 Months

Job Summary

We are seeking a detail-oriented Network Security Engineer to lead the hardening and modernization of our enterprise network infrastructure. This role focuses on "cleaning the house" - systematically auditing legacy configurations, enforcing strict network segmentation, and transitioning our environment toward a Zero-Trust architecture. You will be responsible for the lifecycle of firewall governance, the decommissioning of technical debt, and ensuring that our global network company's remains compliant with institutional security mandates.

Key Responsibilities

1. Firewall and ACL Governance

• Audit & Rationalization: Systematically review and audit existing firewall rule sets and Access Control Lists (ACLs) across the global enterprise to eliminate redundant, outdated, or overly permissive entries.
• Policy Management: Assist in developing and enforcing standardized management procedures for all firewall and ACL modifications, ensuring every change aligns with established security policies and compliance frameworks.

2. Network Segmentation & Isolation

• Architectural Review: Evaluate and enhance network segmentation strategies—including micro-segmentation—to minimize the attack surface and prevent lateral movement by malicious actors.
• Trust Zone Enforcement: Design and implement new VLANs and routing policies to ensure rigorous logical separation between diverse trust zones, including Student, Faculty, Research, IoT, and Administrative networks.

3. Legacy Infrastructure Decommissioning

• Cleanup Operations: Identify and execute the orderly decommissioning of legacy network segments, unused VLANs, and obsolete hardware configurations.
• Infrastructure Migration: Lead the remediation and consolidation of specialized networks, specifically focusing on the phase-out and migration of the OpNet infrastructure to modern, standardized platforms.

4. Documentation & Compliance

• Topology Management: Maintain accurate, high-fidelity network topology diagrams and documentation for all security-related changes and segmentation schemes.
• Regulatory Alignment: Validate that all network cleanup and security activities adhere strictly to internal GOIS (Global Office of Information Security) mandates and external regulatory standards.