Systems Administrator

Systems Administrator

Primary

Location:

Dahlgren, VA or Virginia Beach, VA or San Diego, CA

Clearance:
Active Secret

Ability to work remotely:
No

Obsidian Solutions Group is seeking an experienced Systems Administrator to manage, maintain, and secure critical government IT infrastructure and systems. The Systems Administrator will be responsible for the day-to-day operation, configuration, and maintenance of servers, networks, and cloud environments while ensuring system availability, performance, and security. This role requires comprehensive knowledge of network infrastructure, security best practices, system administration, and cloud computing technologies.

Full-time

• Administer and maintain server and client operating systems in enterprise environments
• Configure and manage network infrastructure including LAN/WAN architecture, routers, switches, and pathways
• Implement and maintain network protocols including TCP/IP, DHCP, DNS, and directory services
• Monitor and optimize bandwidth management and network traffic flow using TCP/IP and OSI model principles
• Utilize performance tuning tools and techniques to ensure optimal system and network performance
• Configure and manage remote access technologies and VPN security
• Use common network tools including ping, trace route, and nslookup for troubleshooting and diagnostics
• Manage file system implementations including NTFS, FAT, and EXT
• Implement and manage virtualization technologies and virtual machine environments
• Apply IT security principles and methods including firewalls, DMZs, and encryption
• Implement network security architecture using defense-in-depth strategies
• Apply cybersecurity principles to protect systems against threats and vulnerabilities
• Ensure compliance with national and international cybersecurity laws, regulations, and policies
• Enforce organizational IT user security policies including account management and access control
• Protect sensitive data in accordance with data security standards (PII, PCI, PHI)
• Perform system administration, network, and operating system hardening
• Deploy and manage software-based computer protection tools including firewalls, antivirus, and antispyware
• Maintain knowledge of transmission records (Bluetooth, RFID, IR, Wi‑Fi) and jamming techniques
• Utilize system/server diagnostic tools for fault identification and resolution
• Execute operating system command line operations (ipconfig, netstat, dir, nbtstat)
• Perform system maintenance procedures including cleaning, disk checks, reboots, and backups
• Manage cloud computing environments across SaaS, IaaS, and PaaS service models
• Implement cloud computing deployment models including private, public, and hybrid configurations
• Apply cloud security strategy and architecture best practices
• Migrate workloads between cloud service models as required

• Four (4) years of system management experience
• Bachelor's degree in Information Technology, Computer Science, or related field required
• DOD 8570 IAT II certifications required (Security+ or equivalent)
• Expert knowledge of computer networking concepts, protocols, and security methodologies
• Strong understanding of LAN/WAN architecture and pathways
• Proficiency with bandwidth management principles and techniques
• Expert knowledge of network traffic flow including TCP/IP and OSI model
• Experience with performance tuning tools and techniques
• Proficiency with remote access technologies and VPN security
• Strong knowledge of network protocols (TCP/IP, DHCP, DNS, directory services)
• Experience using common network tools (ping, trace route, nslookup)
• Knowledge of file system implementations (NTFS, FAT, EXT)
• Experience with virtualization technologies and virtual machine management
• Strong understanding of IT security principles and methods (firewalls, DMZs, encryption)
• Knowledge of network security architecture concepts (topology, protocols, defense‑in‑depth)
• Understanding of cybersecurity principles, threats, and vulnerabilities
• Knowledge of national and international cybersecurity laws, regulations, and policies
• Experience implementing organizational IT user security policies (account management,…