Endpoint Security Administrator

Apply Now

Company: Mount Indie

Location: Chantilly, VA 20152

Description:

We're expanding our cybersecurity team as part of a high-impact effort supporting the U.S. Air Force through Enterprise IT as a Service (EITaaS) Wave 1. This role focuses on hardening endpoint systems within a secure, classified environment-critical to protecting sensitive systems and information. If you're passionate about policy enforcement, endpoint hardening, and making a difference in national defense infrastructure, we want to hear from you.

What You'll Do:

In this role, you'll lead efforts to define, deploy, and manage endpoint security policies-ensuring compliance and protection across desktops, laptops, and other endpoint devices. You'll work with Active Directory, Group Policy Objects (GPOs), and Local Security Policies to implement best-in-class defense strategies, while collaborating with other security teams to keep our environment resilient.

Key Responsibilities:

Policy Management & Enforcement
  • Design and maintain GPOs to secure Windows-based endpoints
  • Develop and manage Local Security Policies for standalone or non-domain systems
  • Regularly review and update policies based on new threats, standards, or system changes
  • Troubleshoot GPO conflicts and application issues

Security & Compliance
  • Define security baselines for various endpoint types (e.g., workstations, servers, mobile)
  • Ensure compliance with internal security policies and external frameworks (NIST, ISO 27001, HIPAA, etc.)
  • Conduct audits and generate reports on endpoint security posture
  • Support rapid policy changes during security incidents

Testing & Validation
  • Test GPO and security policy updates in isolated environments
  • Validate changes for compatibility and performance impact
  • Document policy implementations, exceptions, and results

Collaboration & Support
  • Work closely with IT operations, infrastructure, and cybersecurity teams
  • Provide training and guidance on policy management to support staff
  • Contribute to cross-team security initiatives and projects

Continuous Improvement
  • Stay current on Windows security features and evolving threats
  • Recommend improvements to strengthen endpoint defense strategies
  • Assist in tuning policies to balance usability and security


Required:
  • 10+ years of experience in endpoint security, IT security, or a related cybersecurity role
  • Deep experience managing Active Directory and Group Policy
  • Strong understanding of Windows security and endpoint protection strategies
  • Experience with EDR and antivirus platforms
  • Knowledge of network protocols, malware behaviors, and patching tools
  • Familiarity with PowerShell scripting for policy automation and reporting
  • Clear understanding of compliance frameworks (NIST, PCI-DSS, HIPAA, ISO 27001)
  • Excellent troubleshooting and problem-solving abilities
  • Strong communication skills for working with both technical and non-technical teams
  • Active Secret Clearance
  • DoD 8140 compliance - CompTIA Security+ (or equivalent)


Preferred:
  • Experience with endpoint security in cloud environments (AWS, Azure)
  • Familiarity with SIEM tools like Splunk or LogRhythm
  • Knowledge of scripting in Python or Bash
  • Experience with vulnerability scanning and management tools
  • Certified Endpoint Protection Professional (CEPP)
  • Certified Ethical Hacker (CEH)
  • GIAC Endpoint Security (GESP)
  • Additional security or compliance certifications

Similar Jobs