Senior IT Network and Systems Administrator

2 hours ago


Huntsville, Alabama, United States Arcfield Full time
Job Summary

Arcfield is seeking a highly skilled IT Network and Systems Administrator to provide support to computer systems and network infrastructure in a secure systems mission architecture. The ideal candidate will have a strong background in designing, maintaining, and enhancing network architecture in a classified and unclassified environment.

Key Responsibilities

Install, configure, and maintain Windows and Linux servers, desktops, and network devices in accordance with NIST 800-53A r4 and DISA STIG and SRG requirements.
Evaluate and implement new technologies to support requirement implementation efforts.
Use log aggregation technologies to collect and filter system logs and audit trails.
Support software development environments that utilize commercial, GOTS, and custom tooling.
Perform hardware/software installation and integration, and general infrastructure support.
Prepare documentation related to system configurations and baselines.
Provide backup and recovery services; manage file systems and disk space.
Configure desktop and server virtualization within VMware vSphere and EXSi.
Provide daily, on-site support for the operations/maintenance of information systems deployments in an air-gapped environment.
Understand information systems architecture, perform installation and STIG hardening of Operating Systems; maintain within and across multiple classification levels.
Configure and execute vulnerability scanning tools (Nessus), SCAP/STIG scans (SCC Tool, OpenSCAP, etc.), and perform remediating steps based on findings.
Administer Windows and Red Hat Linux in an offline or standalone environment.
Perform User account and access control management (Active Directory, LDAP, User Access Control) in a domain or stand-alone environment.
Perform proper marking, handling, and storage of classified materials.

Requirements

Bachelor's degree in computer science, Information Systems Management, Network Engineering, or closely related discipline plus 5-7 years of experience, MS plus 3-5 years of experience, PhD plus 0-2 years of experience.
Must be able to obtain and maintain a Secret Clearance.
A minimum of four (4) years of experience as a System Administrator.
DoD Directive 8570 / 8140 Information Assurance Technical (IAT) Level II certification (e.g., Security+ CE, CCNA Security, CySA+, GICSP, GSEC, CND, SSCP).

Desired Qualifications

Previous experience working in a classified Collateral environment.
Understanding of network concepts and Type 1 encryption devices, such as TACLANEs.
Understanding of networking concepts and cybersecurity related tools to include, Defense Information Systems Agency (DISA) Security Technical Implementation Guides (STIG) and Security Content Automation Protocol (SCAP), and vulnerability scanners. Knowledge of and ability to securely configure network equipment (switches and firewalls).
Experience in Information Assurance and Cyber Security.
Knowledge and experience with various network administration, monitoring, and security tools (Wireshark, Nessus, Snort, Netcat and PRTG).
Experience with SIEM tools, VMWare, NetApp, endpoint security tools.
Familiar with RMF, DAAPM, JSIG, and NIST/DFARS compliance security controls and how to implement on various OS computer systems

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