> Markdown version of [/jobs/ext/2039320-system-and-network-administrator](https://www.wearedevelopers.com/jobs/ext/2039320-system-and-network-administrator). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # System and Network Administrator - **Company:** DUNHILL PROFESSIONAL SEARCH - **Location:** Germantown, MD, United States - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Multitier Architecture, Microsoft Windows, Active Directory, Apple Mac Systems, Systems Engineering, Microsoft Azure, Backup Devices, Border Gateway Protocol, Catalyst (Software), Configuration Management Databases, Dynamic Host Configuration Protocol, Linux, Network Address Translation, Disaster Recovery, Domain Name System (DNS), VMware ESX Servers, Firmware, Hyper-V, Identity and Access Management, Networking Hardware, Intrusion Detection and Prevention, Virtual Private Networks (VPN), Network Security, Log Analysis, Windows Servers, Network Monitoring, Routing, Cisco Nexus Switches, Open Shortest Path First (OSPF), Public Key Infrastructure, Remote Access Technology, Cloud Services, TCP/IP, Wireshark, Virtual Local Area Networks, Virtualization Technology, Wireless Networks, SSL Certificate Management, Data Logging, Network Routers, Diagnostic Tools, Computer Networking Systems, Cloud Platform System, Cloud Monitoring, Virtual Environment, Juniper, Information Technology, SolarWinds (Software), Performance Monitor, Cloud Optimization, Firewall Services Module, Azure Resource Manager, Cisco, Key Vault - **Published:** August 12, 2026 - **Apply:** https://us.experteer.com/career/view-jobs/system-and-network-administrator-germantown-md-usa-58918412 ## About the Role tools * Perform firmware upgrades and lifecycle tasks for network devices * Install and maintain Windows Server (2016/2019/2022) in physical and virtual environments * Manage Active Directory and Entra ID, including GPOs and hybrid identity synchronization * Administer DNS, DHCP, PKI/cert management * Implement patching schedules, backups, and disaster recovery * Support virtualization (Hyper-V, VMware ESXi) * Deploy and manage Azure resources (VMs, VNets, NSGs, Storage, Key Vault) * Monitor cloud usage, performance, and costs; optimize as needed * Support Azure backup, monitoring, and logging (Azure Monitor, Log Analytics) * Maintain secure hybrid connectivity between on-prem and Azure * Enforce system and network security policies and least privilege * Manage IAM across local and cloud environments * Collaborate with security teams to remediate vulnerabilities and maintain compliance * Document firewall rules, configurations, and cloud architectures * Provide Tier II/III support for network, server, and cloud incidents * Troubleshoot cross-functional issues across routing, OS, AD replication, and cloud services * Maintain CMDB configuration records and follow change management * Assist in infrastructure upgrades, migrations, and new deployments Tasks * Bachelor's Degree in Information Technology, Computer Science, or related field (or equivalent experience) * 8-15 years of experience in Systems Engineering/Analysis * Strong Windows Server administration and Active Directory experience * Hands-on Microsoft Azure administration experience * Solid Cisco networking knowledge (Catalyst/Nexus, routers, wireless) and Juniper switches * Direct Palo Alto firewall experience (PAN-OS) * Understanding of TCP/IP, VLANs, routing (OSPF, BGP), VPNs, and defense-in-depth security * Experience with monitoring/troubleshooting tools (SolarWinds, Wireshark, Azure Monitor) * Ability to support Windows, macOS, and Linux endpoints in an enterprise network * Knowledge of DNS, DHCP, PKI, a of certificate management * Experience with virtualization (Hyper-V, VMware ESXi) * Strong documentation and communication skills * Ability to work independently on complex, multi-site infrastructure Key requirements * ## Description Experteer Overview In this role, you will design, secure, and maintain a hybrid enterprise infrastructure, serving as the technical backbone of operations. You will bridge on-premises networking and cloud services to ensure a secure, reliable environment across the system lifecycle. You'll own from Cisco/Juniper networking and Palo Alto security to Windows Server and Azure cloud management, driving stability and performance at scale. You will work with cross-functional teams to implement policies, monitor performance, and support upgrades and migrations. This is a hands-on, impact-focused role that shapes the security posture and resilience of the organization. Compensation / Benefits * Configure and troubleshoot Juniper and Cisco networking gear and wireless infrastructure * Administer Palo Alto firewalls, including policies, NAT, VPNs, and threat prevention * Manage site-to-site and remote access VPNs for secure connectivity * Monitor network performance and capacity with approved tools * Perform firmware upgrades and lifecycle tasks for network devices * Install and maintain Windows Server (2016/2019/2022) in physical and virtual environments * Manage Active Directory and Entra ID, including GPOs and hybrid identity synchronization * Administer DNS, DHCP, PKI/cert management * Implement patching schedules, backups, and disaster recovery * Support virtualization (Hyper-V, VMware ESXi) * Deploy and manage Azure resources (VMs, VNets, NSGs, Storage, Key Vault) * Monitor cloud usage, performance, and costs; optimize as needed * Support Azure backup, monitoring, and logging (Azure Monitor, Log Analytics) * Maintain secure hybrid connectivity between on-prem and Azure * Enforce system and network security policies and least privilege * Manage IAM across local and cloud environments * Collaborate with security teams to remediate vulnerabilities and maintain compliance * Document firewall rules, configurations, and cloud architectures * Provide Tier II/III support for network, server, and cloud incidents * Troubleshoot cross-functional issues across routing, OS, AD replication, and cloud services * Maintain CMDB configuration records and follow change management * Assist in infrastructure upgrades, migrations, and new deployments Tasks * Bachelor's Degree in Information Technology, Computer Science, or related field (or equivalent experience) * 8-15 years of experience in Systems Engineering/Analysis * Strong Windows Server administration and Active Directory experience * Hands-on Microsoft Azure administration experience * Solid Cisco networking knowledge (Catalyst/Nexus, routers, wireless) and Juniper switches * Direct Palo Alto firewall experience (PAN-OS) * Understanding of TCP/IP, VLANs, routing (OSPF, BGP), VPNs, and defense-in-depth security * Experience with monitoring/troubleshooting tools (SolarWinds, Wireshark, Azure Monitor) * Ability to support Windows, macOS, and Linux endpoints in an enterprise network * Knowledge of DNS, DHCP, PKI, and certificate management * Experience with virtualization (Hyper-V, VMware ESXi) * Strong documentation and communication skills * Ability to work independently on complex, multi-site infrastructure Key requirements * ## Related Videos - [How Cisco embraced a DevOps culture within its network engineering team](https://www.wearedevelopers.com/videos/99-how-cisco-embraced-a-devops-culture-within-its-network-engineering-team) - [An Applied Introduction to eBPF with Go](https://www.wearedevelopers.com/videos/1075-an-applied-introduction-to-ebpf-with-go) - [What makes Cybersecurity different for critical infrastructure?](https://www.wearedevelopers.com/videos/571-what-makes-cybersecurity-different-for-critical-infrastructure) - [Docker network without Docker](https://www.wearedevelopers.com/videos/1418-docker-network-without-docker) - [Turning Container security up to 11 with Capabilities](https://www.wearedevelopers.com/videos/718-turning-container-security-up-to-11-with-capabilities) - [Your Infrastructure Is Not a Playground: AI Agents for Infra Done Right](https://www.wearedevelopers.com/videos/2084-your-infrastructure-is-not-a-playground-ai-agents-for-infra-done-right) ## Related Articles - [What Are The Top Skills Required For Azure Developers?](https://www.wearedevelopers.com/magazine/77-what-are-the-top-skills-required-for-azure-developers) - [The Most Popular IT Jobs on the Market](https://www.wearedevelopers.com/magazine/376-the-most-popular-it-jobs-on-the-market) - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [Best Paying Jobs in Technology](https://www.wearedevelopers.com/magazine/256-best-paying-jobs-in-technology) - [Top-Paying Tech Jobs (with Salaries)](https://www.wearedevelopers.com/magazine/372-top-paying-tech-jobs-with-salaries) - [A Guide to Green Tech and Green IT Careers](https://www.wearedevelopers.com/magazine/374-a-guide-to-green-tech-and-green-it-careers)