Zscaler Network Security Engineer - Policy & SIEM Lead

Tech Mirrors; Frederick (MD); On-site; USD 120,000 - 180,000; Full time

Job summary

Tech Mirrors in Frederick, Maryland seeks a Network Security Engineer to own and operate our secure access and web security stack with a strong foundation in network security and hands-on security analysis. The role focuses on protecting user and application traffic across the enterprise network, with deep operational ownership of the Zscaler platform (ZIA, SIPA, ZDX).

The candidate will investigate events, assess risk, and drive secure configuration changes across a complex environment,

Qualifications

• Strong network security background with firewall policy and traffic flow concepts.
• Hands-on security analysis experience investigating events and assessing risk.
• Experience administering Zscaler (ZIA, SIPA, ZDX) and policy management.
• Experience integrating security telemetry with a SIEM.
• Familiarity with change management and ITSM processes (ServiceNow).
• Cross-team communication skills.

Responsibilities

• Manage and support Zscaler Internet Access (ZIA), SIPA, and ZDX across the enterprise.
• Configure web filtering, URL categorization, SSL inspection, and security policies.
• Troubleshoot user access, authentication, and internet connectivity issues.
• Implement security changes and perform impact analysis before deployment.
• Monitor security events and integrate logs with the SIEM for detection and analysis.
• Support Zscaler Client Connector upgrades and broader endpoint security initiatives.
• Perform App Connector upgrades and migration for enterprise apps.
• Support GenAI cloud app policy and traffic path design.
• Implement Zscaler DLP for inline web and endpoint policy enforcement.
• Analyze firewall changes for critical scenarios and submit changes for approval.
• Partner with app owners, networks, and cybersecurity teams to ensure secure access.
• Manage ServiceNow service requests and change tickets for security BAU tasks.

Job description

Tech Mirrors in Frederick, Maryland seeks a Network Security Engineer to own and operate our secure access and web security stack with a strong foundation in network security and hands-on security analysis. The role focuses on protecting user and application traffic across the enterprise network, with deep operational ownership of the Zscaler platform (ZIA, SIPA, ZDX).

The candidate will investigate events, assess risk, and drive secure configuration changes across a complex environment,