Systems Administrator (Linux)

$100,000 - $115,000/Yr

ASGN - Dahlgren, VA

Full-time - Mid Level

Dahlgren, VA

Administrative and Support Services

About the position

Apex Systems is seeking a Hybrid Linux Administrator for a contract-to-hire position in Dahlgren, VA. The role requires an Active DOD Top Secret Clearance and involves system administration of Linux-based servers and workstations, with a focus on Red Hat Enterprise Linux. The ideal candidate will have experience in automating system processes, managing security configurations, and providing technical support to engineers and users.

Responsibilities

• Utilize Red Hat Enterprise Linux system administration experience to provide technical problem solving and in-depth consulting relative to system operations
• Automate installation methods and system imaging (e.g. Kickstart/Ansible)
• Use cryptographic experience to set up public key infrastructure (PKI) to create, manage, distribute, use, store, and revoke digital certificates and manage public-key encryption
• DISA STIG implementation and work within Configuration-Managed Environments
• Analyze, design, and implement modifications to system software to improve and enhance system performance by correcting errors
• Plan new hardware acquisitions, interact with vendors, educate customers, and collaborate with other projects within the organization
• Work closely with engineers to help them use workstations and servers to solve their computationally intensive problems
• Support application installation, license management, software tracking/distribution and backup/recovery of system configurations and user data files
• Understand and use essential tools for handling files, directories, command-line environments, and documentation
• Operate running systems, including booting into different run levels, identifying processes, starting and stopping virtual machines, and controlling services
• Configure local storage using partitions and logical volumes
• Create and configure file systems and file system attributes, such as permissions, encryption, access control lists, and network file systems
• Deploy, configure, and maintain systems, including software installation, update, and core services
• Manage users and groups, including use of a centralized directory for authentication
• Manage security, including basic firewall and SELinux configuration
• Configure static routes, packet filtering, and network address translation
• Set kernel runtime parameters
• Produce and deliver reports on system utilization
• Use shell scripting to automate system maintenance tasks
• Configuring system logging, including remote logging
• Configure a system to provide networking services, including HTTP/HTTPS, DNS, SMTP, SSH and NTP

Requirements

• Minimum three - six years (3-6) experience in system administration of Linux-based servers and Linux-based workstations
• CompTIA Security+ certification (or equivalent IAT II certification)
• Troubleshooting skills in RHEL 7/8/9 OS and basic knowledge of Networking fundamentals, specifically TCP/IP protocol suite and IP configuration
• Working knowledge of security guidelines and policies (DISA STIGs) and tools (Evaluate-STIG, STIG-Manager)
• Knowledge of / experience with Tenable suite of products (Security Center, Nessus Scanner, Nessus Agent) is a plus
• Specific experience with Red Hat Enterprise Linux (RHEL 8.x with RHEL 7.x and/or RHEL9.x a plus)
• Knowledge of corporate services including: DNS, SMTP, Splunk, Centralized patching solutions such as Red Hat Satellite, Automation solutions such as Ansible Tower / AWX
• Knowledge of / experience with: Single Sign on solutions such as RHSSO; Virtualization platform management systems such as VMWare / VSphere / Vcenter is a plus
• Demonstrated experience managing the installation and maintenance of IT infrastructure
• Experience working in an environment with rapidly changing job priorities
• Experience with Service Now or similar Ticket Management system
• Linux+ or Red Hat Certification preferred

Nice-to-haves

• Knowledge of / experience with Tenable suite of products (Security Center, Nessus Scanner, Nessus Agent)
• Knowledge of corporate services including: DNS, SMTP, Splunk, Centralized patching solutions such as Red Hat Satellite, Automation solutions such as Ansible Tower / AWX
• Knowledge of / experience with: Single Sign on solutions such as RHSSO; Virtualization platform management systems such as VMWare / VSphere / Vcenter is a plus

Benefits

• Comprehensive benefits package
• Quality career resources
• Training and certifications
• Development opportunities