We are looking for a Systems Engineer to support and enhance a secure hybrid infrastructure environment serving regulated business needs in Yonkers, New York. This Long-term Contract position will focus on designing, administering, and improving cloud and on-premises platforms across enterprise systems, networking, identity, and security domains. The role calls for a hands-on technical leader who can drive infrastructure maturity, strengthen operational resilience, and provide expert guidance on complex platform issues.<br><br>Responsibilities:<br>• Design and manage enterprise infrastructure spanning on-premises platforms, Azure Government, and government cloud environments to ensure stability, scalability, and compliance.<br>• Establish and uphold technical standards for servers, storage, networking, identity, and security across hybrid systems.<br>• Lead modernization efforts that advance cloud adoption, streamline platform consistency, and move workloads into approved environments.<br>• Serve as the senior escalation resource for high-impact infrastructure, platform, and security incidents requiring deep technical analysis.<br>• Provide coaching and technical direction to less experienced engineers while promoting strong operational practices across IT teams.<br>• Administer Microsoft 365 government environments, including collaboration, endpoint management, messaging, and security capabilities.<br>• Manage Azure Government services covering compute, networking, identity, policy enforcement, and security configuration.<br>• Support Nutanix-based infrastructure and Windows Server environments, including Active Directory, Group Policy, and hybrid identity integration with Microsoft Entra ID.<br>• Maintain secure network services such as firewalls, switching, wireless connectivity, and VPN solutions while advancing segmentation strategies for regulated environments.<br>• Oversee backup, disaster recovery, resilience testing, audit support, vulnerability remediation, and documentation needed for compliance and operational readiness.