System and Network Administrator Security Clearance

Position: System and Network Administrator with Security Clearance
Salary - $130, Seeking a versatile and highly skilled Systems and Network Administrator to design, secure, and maintain our hybrid enterprise infrastructure. In this role, you will serve as the technical backbone of our operations, taking ownership of everything from on-premises Cisco/Juniper networking and Palo Alto security systems to Windows Server administration and Microsoft Azure cloud environments. The ideal candidate is a proactive, well-rounded engineer who thrives on bridging the gap between local hardware and cloud services, ensuring a seamless, secure, and highly reliable environment across the entire system lifecycle.

• Configure, maintain, and troubleshoot Juniper and Cisco switches, routers, and wireless infrastructure.
• Administer and support Palo Alto firewalls, including security policies, NAT rules, VPNs, and threat prevention features.
• Manage site to site and remote access VPNs, ensuring secure and reliable connectivity.
• Monitor network performance, availability, and capacity using approved tools.
• Perform routine maintenance, firmware upgrades, and hardware lifecycle tasks for network devices.
• Install, configure, and maintain Windows Server operating systems (2016/2019/2022) across physical and virtual environments.
• Manage Active Directory (AD) and Microsoft Entra  (formerly Azure AD), including organizational units, Group Policy Objects (GPOs), user/group permissions, and hybrid identity synchronization.
• Administer core infrastructure services including DNS, DHCP, and PKI/cert management.
• Implement and monitor patching schedules, system backups, and disaster recovery procedures for server infrastructure.
• Support virtualization technologies, including Hyper-V and VMware ESXi, where applicable.
• Deploy, configure, and manage Azure cloud resources, including Virtual Machines (VMs), Virtual Networks (VNets), Network Security Groups (NSGs), Storage Accounts, and Key Vaults.
• Monitor cloud resource utilization, performance, and costs, implementing optimization strategies where appropriate.
• Support Azure-native backup, recovery, and logging tools (Azure Monitor, Log Analytics, Azure Backup).
• Maintain secure hybrid connectivity between on-premises infrastructure and the Azure tenant.
• Implement and enforce system and network security policies, network segmentation, access controls, and Principle of Least Privilege.
• Manage Identity and Access Management (IAM) across local domains and cloud environments.
• Work alongside security teams to remediate vulnerabilities and maintain compliance with organizational standards.
• Maintain accurate documentation of firewall rules, server configurations, network diagrams, and cloud architectures.
• Provide Tier II/III support for network, server, and cloud-related incidents, outages, and performance issues.
• Diagnose and resolve complex, cross-functional issues involving routing, switching, OS performance, Active Directory replication, and cloud service disruptions.
• Maintain up-to-date configuration records in the CMDB.
• Follow established change management processes for all network, system, and cloud modifications.
• Assist in planning and executing infrastructure upgrades, migrations, and new deployments.

Minimum Qualifications
• Bachelor's Degree in Information Technology, Computer Science, other relevant field, or equivalent relevant experience;
Master's Degree preferred.
• Advanced computing certification preferred.
• 8-15 years of experience in Systems Engineering/Analysis. Other Job Specific Skills
• Systems

Experience:

Strong experience administering Windows Server environments, including Active Directory, Group Policy, DNS, DHCP, and server security benchmarking.
• Cloud

Experience:

Hands-on experience with Microsoft Azure administration (virtual machines, virtual networks, Entra , storage, and IAM).
• Network

Experience:

Solid working knowledge of Cisco networking (Catalyst/Nexus switches, routers, wireless) and Juniper switches.
• Firewall

Experience:

Direct experience configuring and supporting Palo Alto Networks firewalls (PAN-OS, Panorama preferred).
• Core Concepts:
Solid understanding of TCP/IP, VLANs,…