Linux Systems Administrator

Overview

i3 is seeking a Linux Systems Administrator. The selected candidate will provide technical expertise supporting information system components, infrastructure integration and maintenance to satisfy architectural and business requirements.

Responsibilities

• Perform implementation of system additions and/or enhancements and makes recommendations to management.

• Manage a mixed Linux and Windows closed-network environment that includes VMware vSphere and VDI Infrastructure.

• Maintain Ansible Automation Platform for configuration management and automation.

• Manage the functionality of servers and computers running Windows/Linux operating systems such as (RHEL, Windows 10/11, Windows Server) within an Active Directory environment.

• Maintain the integrity and security of servers and systems.

• Assist in creation and maintenance of system documentation such as SOPs and policies.

• Implements Information Assurance (IA) systems and practices such as DISA STIGs, RMF and system hardening.

• Interact with users and evaluate vendor products.

• Maintain current knowledge of relevant technologies as assigned.

Qualifications

• Bachelor’s degree and 4 years’ experience or 7+ year’s equivalent experience.

• Secret Clearance is required.

• U.S. Citizenship is required.

• Ability to take initiative and work in a team environment.

• Must have Excellent Customer Service Skills.

• Strong Systems Administration and Virtualization principles and troubleshooting experience.

• Good working knowledge of cybersecurity practices/procedures (DISA STIGs, RMF, hardening, documentation).

• Must have DoD 8570/8140 IA Certification (Security+ CE).

• Operating System certification required.

• Ability to manage a large-scale, complex computing environment.

• Ability to build, standardize, and configure Windows and Linux Operating Systems in various technical use cases.

Preferred:

• Experience with virtualization technologies such as Red Hat OpenShift, VSan, App Volumes, Kubernetes.

• Familiarity with Cisco UCS management, Cisco networking and vSphere distributed switches with multiple VLANS.

Knowledge/Skills

• Knowledge of office administration and procedures.

• Exceptional judgment capabilities and relationship management skills.

• Excellent communication, teamwork, and client service skills; ability to clearly communicate in discussions and written documents, and to deliver feedback clearly and tactfully.

• Interact with a diverse array of customers and staff in a professional and courteous manner.

• Work independently with accountability for accurate and complete results.

• Be extremely organized and exceptionally detail oriented.

• Work well both independently and in a team environment.

• Be energized by a fast-paced work environment.

• Must be able to communicate with others effectively.

• Analyze information and respond appropriately.

• Manage time wisely and prioritize tasks.

• Provide superior customer service. 

• Multi-task in a pleasant manner.

• Work well under pressure.

PHYSICAL DEMANDS

• The physical demands described here are representative of those that must be met by an employee to successfully perform the essential functions of this job.

• While performing the duties of this job, the employee is regularly required to talk or hear. The employee frequently is required to stand; walk; handle or feel; and reach with hands and arms.

• The employee is occasionally required to sit; climb or balance; and stoop, kneel, crouch or crawl. The employee must be able to lift and/or move up to 10 pounds and occasionally lift and/or move up to 25 pounds.

• Specific vision abilities required by this job include close vision, distance vision, peripheral vision, depth perception and ability to adjust focus.

• Regular i3 hours are 8:00 a.m. - 5:00 p.m. Monday-Friday, however, additional hours may be required on occasion. Regular and punctual attendance is required.

About i3

i3 is a technically diverse, 100% team member owned business, headquartered in Huntsville, Alabama specializing in missile and aviation systems engineering and logistic services, electronic warfare and electromagnetic effects analysis, UAS system integration and flight operations, full lifecycle C5ISR engineering services, cybersecurity and IT/IA innovative solutions and virtual training, simulation & serious game development and implementation. We have established a broad offering of products and capabilities collectively providing decades of experience supporting the full complement of DoD military services, Missile Defense Agency, National Aeronautics and Space Administration, and a variety of other Government organizations and private industry customers.

Perks of being a team member owner include:

• Long-term financial security

• Higher job satisfaction

• Greater job security

• Personal and professional growth

• Great company culture

Other outstanding benefits:

• Excellent insurance coverage

• 401(k) match

• Generous PTO

• Health and wellness incentives

• Tuition and certification reimbursement

• Countless opportunities to give back to the community through i3 Cares

We work hard. We compete hard. We play hard. Apply now to join us!

Job LocationsUS-AL-Huntsville

ID 2026-5096

Type Full-Time

Clearance Secret Required