Senior System Administrator – Azure, Exchange & Active Directory

Lumen Solutions Group IncNew York, NY
Onsite

About The Position

Lumen Solutions Group Inc. is a technology consulting Services company based in Florida. We provide a wide array of experienced business and IT professionals supporting clients from solution design to implementation and support. We specialize in professional IT consulting services, IT Staffing, Business/IT Strategy, Business Process Blueprints, Enterprise Architecture, and Enterprise Transformation. We are looking for a Senior System Administrator with proven experience designing, implementing, and supporting enterprise-scale hybrid cloud and on-premises environments. The ideal candidate will have deep expertise in Microsoft Azure, Exchange, Active Directory, and automation scripting, along with experience supporting complex multi-forest, hybrid infrastructures in production environments.

Requirements

  • Microsoft Azure – 10+ years (Microsoft Certification preferred).
  • Microsoft Exchange – Hybrid & Multi-Org enterprise environments.
  • Microsoft Active Directory – Multi-Forest Hybrid administration.
  • PowerShell / Unix Shell Scripting.
  • Windows Server & Unix/Linux Administration.
  • Microsoft Entra Connect, SCCM, ExpressRoute.
  • DNS, PKI, Group Policy, SQL Server.
  • Enterprise Infrastructure Design, Solution Architecture & Cloud Migrations.

Responsibilities

  • Design, implement, and maintain hybrid Azure/on-premises infrastructure.
  • Administer and support enterprise Exchange and Active Directory environments.
  • Lead cloud migration and infrastructure modernization initiatives.
  • Troubleshoot complex enterprise client-server environments.
  • Develop automation scripts and optimize Azure resources.
  • Support enterprise infrastructure projects and mentor junior technical staff.
© 2026 Teal Labs, Inc
Privacy PolicyTerms of Service