Senior System Security Administrator - Pune

Job Title: Senior System Security Administrator

Experience : 8 - 12 Years ( Relevant )

Salary : 16 LPA upto

Location : Pune

Notice period : 30 Days max ( Immediate joiners preferred )

Job Summary:
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.

Key Responsibilities:

1. Active Directory (AD) Management
• 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.
2. AV - EDR (Antivirus with Endpoint Detection and Response)
• 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.
3. DNS & DHCP Management
• 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, cache poisoning, and unauthorized access.
• Troubleshoot DNS resolution, IP conflicts, and DHCP scope exhaustion issues.
4. System Security & Compliance
• Conduct system audits and implement security measures in line with industry standards (NIST, ISO 27001).
• Ensure compliance with regulatory frameworks (e.g., GDPR, PCI-DSS).
• Provide detailed reports on system vulnerabilities and remediation efforts.
5. Leadership & Documentation
• Act as a subject matter expert (SME) for AD, AV-EDR, and DNS/DHCP-related technologies.
• Mentor junior administrators and provide guidance on best practices.
• Maintain detailed documentation of configurations, policies, and troubleshooting procedures.
• Collaborate with cross-functional teams to align system management with business objectives.

Qualifications:

• Bachelor's degree in Computer Science, Information Technology, or a related field.
• 8+ years of experience in systems administration with a focus on AD, AV-EDR, and DNS/DHCP.
• Advanced certifications required:
• Active Directory: Microsoft Certified: Azure Solutions Architect Expert, MCSA, or equivalent.
• Security: CISSP, CISM, CEH, or equivalent.
• Endpoint Security: CrowdStrike Certified, Carbon Black Administrator, or similar.
• DNS/DHCP: Infoblox Certified or related expertise.

Skills:

• Strong expertise in AD forest/domain design, Kerberos, LDAP, and replication troubleshooting.
• In-depth knowledge of endpoint security strategies, malware detection, and remediation.
• Proficiency with enterprise DNS/DHCP management tools and IPAM solutions.
• Familiarity with scripting (PowerShell, Python) for automation and configuration management.
• Experience with network monitoring tools (e.g., Splunk, SolarWinds) for security and performance.

Key Competencies:

• Leadership in driving complex system and security projects.
• Exceptional analytical and problem-solving skills.
• Effective communication for technical and non-technical audiences.
• Strong commitment to staying current with evolving security and systems management technologies.