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Hallmark Global Technologies Inc
Frederick, MD, USA
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Key Responsibilities
• Server Administration
• Administer and support Windows Server (2012/2016/2019/2022) environments.
• Manage Active Directory, DNS, DHCP, and Group Policy.
• Install, configure, and maintain Linux servers (RHEL/CentOS/Ubuntu).
• System Maintenance & Security
• Perform OS patching, upgrades, and vulnerability remediation.
• Implement system hardening and security best practices.
• Ensure compliance with organizational and regulatory standards.
• Application & Web Server Support
• Support and maintain Windows-based enterprise applications.
• Deploy, configure, and upgrade application environments.
• Administer IIS / Windows Web Servers, including:
o Application pools
o Bindings
o SSL certificates
o Authentication mechanisms
• Virtualization & Infrastructure
• Manage VMware vSphere infrastructure, including:
o ESXi hosts
o Clusters
o Resource pools
o Datastores via vCenter
• Ensure high availability, scalability, and performance.
• Resilience & Compliance
• Manage backups, snapshots, and disaster recovery (DR) strategies.
• Support HA configurations and audit readiness.
• Maintain operational standards and compliance frameworks.
• Monitoring & Troubleshooting
• Monitor system performance, availability, and DR readiness.
• Troubleshoot issues related to OS, applications, and web servers.
• Participate in incident, problem, and change management processes.
• Documentation
• Create and maintain technical documentation, SOPs, and runbooks.
• ________________________________________
Required Skills
• Strong experience in Windows Server administration
• Working knowledge of Linux server environments
• Hands-on experience with IIS / Windows Web Servers
• Experience supporting Windows-based applications
• Knowledge of networking fundamentals (TCP/IP, ports, firewalls)
• Familiarity with patching, security, and compliance standards
• ________________________________________
Good to Have
• Experience with PowerShell or shell scripting
• Exposure to VMware or Hyper-V virtualization platforms
• Knowledge of Azure / AWS cloud environments
• Familiarity with ITIL processes and standards
Any Gradute
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