Linux and Network Systems Administrator

$112,000 - $179,000/Yr

Peraton - Silver Spring, MD

Full-time

Silver Spring, MD

Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services

About the position

Peraton Labs is seeking a cleared full-time System Administrator to manage day-to-day IT operations, focusing on the configuration and management of IT assets while providing support to end users. The role involves working with a team of system and network engineers to maintain, test, upgrade, and troubleshoot both classified and unclassified IT infrastructure, which includes devices running Linux and Microsoft Windows, as well as networking equipment.

Responsibilities

• Manage classified and unclassified IT infrastructure including build, setup and maintain program systems
• Build, upgrade, refresh, maintain, and effectively troubleshoot firewalls, routers, network switches, Linux and Windows servers and IT services
• Maintain IT Server Rooms, keep physical server room space organized and safe; perform monthly system patch outside of the normal business hours
• Respond to user requests for IT support promptly
• Ensure network and computer infrastructure remain available during production hours
• Improve data backup solutions, perform regular data backup
• Identify root-causes of operational issues and process inefficiencies
• Prepare reports and documentation
• Install hardware and software as requested by projects
• Monitor security logs for violations and anomalous events; report information security concerns and problems when necessary
• Continuously maintain a thorough understanding of all configurations, architecture, installed software, accounts (both Operating System and Application), data flows, ports, protocols, and other relevant data for each IT Systems

Requirements

• Minimum of 8 years with BS/BA; Minimum of 6 years with MS/MA; Minimum of 3 years with PhD Degree in a technical discipline such as Computer Science, Computer Engineering, Electrical Engineering, Computer Security, or Information Technology - or equivalent applied experience
• 5+ years of solid working experience as Linux system administrator for both servers and end user devices with specific focus on Ubuntu, Rocky Linux, and Red Hat distributions
• 2+ years of solid working experience in firewall configuration and administration including security compliance configuration on firewalls, with Palo Alto product line experience preferred
• 2+ years of network administration expertise for maintaining wiring, changing configurations, adding/changing wiring and connections to ports on switches, debugging, enabling or disabling switch ports, configuring VLAN/VXLAN ports and IP routes
• 1+ years working experience in the DoD STIG process
• Experience writing Linux scripts, Python, Perl programming experience is a plus
• In-depth knowledge of TCP/IP and networking concepts including solid understanding of well-known services including DNS, DHCP, SSL, IPSec, VPN, digital certificate
• Well versed in networking commands and utilities, such as arp, netstat, dhclient, dig, ethtool, iperf, iptables, ncat, nmap, nslookup, route, snort, ssh, traceroute, wget, tcpdump, wireshark, etc.
• Working experience with Microsoft Windows (desktop and server)
• Experience in racking servers, performing hardware troubleshooting, repair and maintenance including replacing hard disks or solid state disks in PCs and servers, upgrade memory, and correctly identifying compatible hardware parts
• In-depth understanding of host virtualization, including working experience with commonly used hypervisors such as Hyper-V, QEMU, VirtualBox, VMware
• Have Gitlab, Docker containers, Kubernetes configuration experience
• Ability to troubleshoot and analyze a problem independently
• Self-motivated to solve complex problems
• Good written and verbal communication skills
• Current CompTIA Security+ with CE certification
• Active TS Clearance with ability to obtain SCI US Citizenship

Nice-to-haves

• Experience on open source or commercial IDS, IPS, SIEM
• TS/SCI clearance with polygraph

Benefits

• Competitive salary range of $112,000 - $179,000 based on experience and other factors