We are a growing multi-brand cosmetics company based in New York, operating both on-premises infrastructure and Microsoft 365 cloud services.
As we continue to modernize our IT environment, we are strengthening our infrastructure, security, and cloud capabilities. We are seeking a hands-on Senior IT Systems & Security Engineer to help manage and secure our enterprise environment.
Senior IT Systems & Security Engineer — DHD Consulting | Tahoe AI
Responsibilities
Infrastructure
- Windows Server / Active Directory administration
- Virtualization platforms (Nutanix, AHV, or similar)
- Microsoft 365 / Entra ID administration
- Backup, monitoring, and disaster recovery planning
Security
- Firewall administration (Sophos, Cisco, or similar)
- VPN management (SSL VPN, Site-to-Site VPN)
- Network segmentation
- Endpoint and identity security (MFA, Conditional Access)
- Security monitoring and incident response
- Email security and phishing protection
- Implement and maintain security policies and best practices
Network
- Switching and routing support
- VLAN design and troubleshooting
- Connectivity between sites and cloud environments
Projects
- Infrastructure upgrades and migrations
- Security hardening initiatives
- Cloud and hybrid modernization projects
- Vendor coordination and project execution
Requirements
- 7+ years of IT infrastructure experience
- Strong Windows Server and Active Directory expertise
- Hands-on firewall and VPN administration experience
