Systems Administrator - Managed Services (On-Site NYC)

About the Role Lincoln is seeking an experienced Systems Administrator to join our team in New York City. This is a hands‑on, on‑site position supporting enterprise infrastructure environments across multiple clients. The ideal candidate is technically strong, detail‑oriented, and comfortable operating at both operational and escalation levels. Key Responsibilities Administer and maintain Windows Server environments , including: Server provisioning and hardware configuration OS patching, updates, and validation Performance monitoring and proactive optimization Manage and troubleshoot Active Directory environments , including: Group Policy administration User and security management Authentication and access control Support and maintain core network services : DNS and DHCP configuration and troubleshooting Network performance monitoring and issue resolution Administer Microsoft Azure environments , including: Azure AD management Virtual machine provisioning and support Cloud storage and infrastructure services Implement and maintain security best practices across all systems: Identity and access management Privileged access controls Compliance-driven configuration standards Troubleshoot and resolve Tier 2 / Tier 3 infrastructure issues , including: Root cause analysis of complex system issues Differentiation between system-level and network-related problems Escalation support for service delivery teams Required Qualifications 5+ years of experience in Systems Administration or Infrastructure Engineering Advanced experience with Windows Server environments Strong working knowledge of: Active Directory (Group Policy, user management) DNS and DHCP Hands‑on experience with Microsoft Azure, including Azure AD and IaaS workloads Proven ability to troubleshoot complex infrastructure issues independently Preferred Qualifications Experience with Privileged Access Management (PAM) tools such as CyberArk Background in managed services (MSP) environments Familiarity with security frameworks and best practices Experience supporting multi‑site or hybrid environments Work Environment Location: Fully on-site in New York City This role requires hands‑on access to infrastructure and direct collaboration with internal teams and clients Why Join Lincoln Work on diverse, enterprise‑grade environments Exposure to both on‑prem and cloud infrastructure Opportunity to work with modern security and automation tools Collaborative, fast-paced MSP environment with growth potential #J-18808-Ljbffr Lincoln Computer Services