Senior Systems & Security Administrator

Senior Systems & Security Administrator | $150,000 to $185,000 | New York, NY | Hybrid

Our client is a leading professional services organization seeking a Senior Systems & Security Administrator to take ownership of a broad infrastructure and security environment.

This is a hands-on role for an experienced systems or infrastructure professional with strong Microsoft, networking and security experience. The successful candidate will act as a senior technical escalation point while helping strengthen the organization's infrastructure, security controls and operational processes.

The Role

Responsibilities will include:

• Administering Microsoft Entra ID, Microsoft 365, Intune and Defender
• Managing identity, Conditional Access, MFA, SSO and endpoint security
• Supporting enterprise networking, including firewalls, VLANs, wireless and VPNs
• Responding to security incidents and supporting vulnerability and patch management
• Managing backup, recovery and disaster recovery processes
• Supporting security audits and compliance initiatives
• Developing automation using PowerShell and Microsoft Graph
• Troubleshooting complex infrastructure and security issues
• Maintaining technical documentation, configuration standards and operational procedures
• Working with technology leadership and vendors to improve security, resilience and operational efficiency

What We’re Looking For

Our client is looking for a candidate with:

• 7+ years of systems, infrastructure or related technology experience
• Strong hands-on Microsoft experience across Entra ID, M365 and Intune
• Practical networking and firewall experience
• Experience with endpoint security, vulnerability management and incident response
• PowerShell and/or Microsoft Graph automation experience
• Experience working within a formal security or compliance environment such as ISO 27001, SOC 2 or NIST
• Strong troubleshooting, communication and documentation skills
• A hands-on, proactive approach and willingness to work across both infrastructure and security

Why Consider This Opportunity?

This is an opportunity to take ownership of a broad technology environment while working across both infrastructure and cybersecurity . The role offers significant technical variety and the opportunity to influence security, infrastructure and automation initiatives within an established organization.

If you’re an experienced infrastructure or systems professional with strong Microsoft, networking and security experience, please apply or get in touch for a confidential conversation.