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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Systems Administrator - **Company:** Semper Valens Solutions, Inc. - **Location:** Aberdeen Proving Ground, MD, United States - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Microsoft Windows, Amazon Web Services, Applications Architecture, Microsoft Azure, Cloud Computing, System Configuration, Data Stores, Dynamic Host Configuration Protocol, DevOps, Domain Name System (DNS), VMware ESX Servers, Monitoring of Systems, Virtual Private Networks (VPN), Internet Small Computer System Interface (ISCSI), Linux System Administration, Network Connections, Routing, Network Virtualization, Performance Tuning, Role-Based Access Control, Ansible, VCloud, Virtual Local Area Networks, Virtualization Technology, VMware VSphere, Load Balancing, Delivery Pipeline, Software Troubleshooting, HybridCloud, Firewalls (Computer Science), Infrastructure as Code (IaC), Containerization, Infrastructure Automation Frameworks, Storage Technologies, Vcenter, Enterprise Integration, Terraform, Vmware - **Published:** September 11, 2026 - **Apply:** https://www.thejobnetwork.com/job/f4053e0c-c248-442b-8870-cc84c2caee58/sr-system-administrator-dcgs-infrastructure ## About the Role * vSphere / ESXi Administration: Deep experience managing clusters, hosts, resource pools, DRS/HA, and VM lifecycle operations in enterprise environments. * vCenter Operations: Skilled in configuring, monitoring, and optimizing vCenter, including performance tuning, capacity planning, and role-based access control * VMware Networking & Storage: Strong understanding of vSwitches, distributed switches, VLANs, iSCSI/NFS/FC storage, and datastore performance considerations. * Cluster Design & Scaling: Ability to architect resilient, scalable clusters and optimize workloads for performance and availability. * Performance Troubleshooting: Skilled at diagnosing CPU ready issues, memory ballooning, storage latency, and network bottlenecks using VMware tools and logs. * Automation & Templates: Experience creating "gold" images, VM templates, and leveraging automation to standardize deployments. * Hybrid Cloud Integration Concepts: Understanding of cloud landing zones, hybrid identity, network connectivity (VPN/ExpressRoute/Direct Connect), and workload migration patterns. * Cloud Offerings: Knowledge of VMware Cloud options, AWS, Azure, or similar platforms to support cloud-based vSphere integration * Infrastructure as Code (IaC): Familiarity with Terraform, Ansible, or similar tools as environments move toward cloud-native practices. * Understanding how virtualization supports container platforms, DevOps pipelines, and modern application architectures. * Strong grasp of routing, switching, firewalls, load balancers, DNS, DHCP, and how they interact with virtualized environments. * Windows & Linux Administration: Skilled in patching, performance tuning, and troubleshooting across both OS families. * Skilled at translating technical concepts for leadership, collaborating with security, networking, and application teams. * Supporting junior admins, leading technical initiatives, and driving best practices across the team., * 5+ years of experience administering VMware ESXi, vCenter, and vSphere in enterprise environments. * Strong knowledge of virtual networking, storage technologies, and performance troubleshooting. * Experience with backup/DR platforms and enterprise monitoring tools. * Solid understanding of Windows and Linux server administration. * Familiarity with cloud platforms (Azure, AWS) and hybrid-cloud concepts, * Experience with VMware Cloud offerings, AWS, Azure,or similar offerings. * Hands-on experience with workload migration tools (HCX, vMotion across environments, cloud migration services). * Exposure to IaC tools such as Terraform or Ansible. * Knowledge of container platforms, DevOps practices, or modern application architectures. ## Related Videos - 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