Senior System Security Administrator
6 days ago
Employment Type: Full-time
Job Description:
We are looking for an experienced Senior System Security Administrator with 8+ years of expertise in managing, securing, and optimizing enterprise systems. The candidate will focus on Active Directory (AD), Antivirus solutions with Endpoint Detection and Response (AV-EDR), and DNS & DHCP services. This role requires advanced troubleshooting skills, a deep understanding of system security principles, and relevant industry certifications.
Roles and Responsibilities
• Design, implement, and manage multi-domain Active Directory environments.
• Develop and enforce AD policies, including Group Policy Objects (GPOs), user and device management, and OU structures.
• Ensure AD security by implementing privileged access management, auditing, and securing domain controllers.
• Troubleshoot and resolve AD replication, authentication, and authorization issues.
• Deploy, manage, and optimize enterprise AV-EDR solutions (e.g., CrowdStrike, Sophos).
• Monitor, detect, and respond to endpoint security threats and vulnerabilities.
• Conduct regular updates, patching, and fine-tuning of AV-EDR policies.
• Perform threat analysis, incident response, and root cause investigation for endpoint-related incidents.
• Configure and maintain enterprise DNS and DHCP systems (e.g., Infoblox, Windows Server).
• Ensure high availability, redundancy, and fault tolerance of DNS & DHCP services.
• Implement DNSSEC, IPAM solutions, and other security measures to prevent spoofing,
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