Senior Zscaler Network Engineer - Zero Trust Architect

Agile Defense; Ashburn, Northern (VA, KY); Hybrid; USD 170,000 - 185,000; Full time

Job summary

Agile Defense is seeking a Senior Network Engineer in the Ashburn, VA area to design, deploy, and manage enterprise Zscaler solutions (ZIA, ZPA, ZDX, ZCC) across multi-cloud and on-premises environments. You will serve as the technical authority, implementing zero-trust access policies and guiding security posture for mission-critical networks.

You will lead Tier-3 support, coordinate IAM integrations (SAML/SCIM), and drive observability with SIEM tools while traveling up to 20% of the time to

Qualifications

• Experience designing and deploying Zscaler in multi-cloud environments.
• Experience with ZIA, ZPA, ZDX and ZCC client deployments.
• Ability to travel up to 20% within the United States.

Responsibilities

• Design, deploy, administer, upgrade, and optimize enterprise Zscaler environments across multi-cloud and on-premises.
• Create and tune security policies (URL filtering, DLP, SSL/TLS inspection) and sandbox rules.
• Develop and enforce least-privilege access with ZPA for internal apps in private clouds and data centers.
• Provide Tier 2/3 escalation support for complex proxy routing, authentication issues, and latency problems.
• Manage Zscaler Client Connector lifecycle across macOS, Windows, iOS and Android.
• Leverage ZDX, Splunk, Cribl for observability and alerting; integrate SIEM data.
• Coordinate with IAM teams to configure SAML/SCIM attributes with IdPs (Okta, Azure AD, Ping Identity).
• Prepare RCA/post-incident reports and perform root cause analyses; support vendor escalation when needed.
• Maintain network diagrams, topology maps, SOPs, and change tickets (ServiceNow/Remedy).
• Support on-call rotations and emergency changes to restore services within SLA.

Skills

Zscaler deployments

Zero Trust

Security policies

SAML/SCIM attributes

Tier-3 support

On-call rotation

Tools

Zscaler Client Connector

Splunk

Cribl

ServiceNow

Job description

Agile Defense is seeking a Senior Network Engineer in the Ashburn, VA area to design, deploy, and manage enterprise Zscaler solutions (ZIA, ZPA, ZDX, ZCC) across multi-cloud and on-premises environments. You will serve as the technical authority, implementing zero-trust access policies and guiding security posture for mission-critical networks.

You will lead Tier-3 support, coordinate IAM integrations (SAML/SCIM), and drive observability with SIEM tools while traveling up to 20% of the time to