Systems Administrator

Concurrent Technologies Corporation; Northern (KY); Hybrid; USD 70,000 - 100,000; Full time

Job summary

Concurrent Technologies Corporation (CTC) is seeking a Systems Administrator in Camp Lejeune, NC, to manage Linux/Windows servers supporting electrical distribution, water/wastewater, ADMS, and SCADA applications. You will administer platforms (Ubuntu, RHEL, Rocky Linux, CentOS) and Nutanix virtualization, while applying DISA STIG controls and maintaining system reliability.

The role involves automation with Bash/PowerShell/Python/SQL, configuring storage, networks, backups, and participating in

Qualifications

• Bachelor’s Degree in Computer Science or IT related field or 3+ years of Linux/Windows server administration in critical infrastructure environments.
• Experience supporting SCADA, ADMS, industrial-control, or critical-infrastructure applications.
• Advanced enterprise Linux experience (Ubuntu, RHEL, Rocky, CentOS).
• Experience supporting Ignition, Rockwell FactoryTalk/PlantPAx, and Nutanix virtualization.
• Experience applying and documenting DISA STIG compliance.
• Automation in Bash, PowerShell, Python, and SQL.
• Ability to obtain and maintain a Secret security clearance.
• Applicable DoD 8140 baseline certification.

Responsibilities

• Build, harden, configure, administer, and maintain Linux and Windows servers supporting electrical-distribution, water/wastewater, ADMS, and SCADA applications.
• Administer enterprise Linux platforms, including Ubuntu, RHEL, Rocky Linux, and CentOS, ensuring secure and reliable operation.
• Provision Linux and Windows systems on physical servers and Nutanix-hosted virtual machines.
• Administer SEL computing platforms hosting operational applications and SCADA services.
• Support Inductive Automation Ignition SCADA environments, including gateways, redundant gateways, databases, historians, alarms, logging, certificates, authentication, and communications.
• Support Rockwell Automation environments: FactoryTalk Services Platform, FactoryTalk View SE, PlantPAx, FactoryTalk Historian, licensing, domain-integrated services, SQL databases, and redundant architectures.
• Configure and maintain storage, filesystems, networking, host-based firewalls, service accounts, certificates, NTP, logging, database connections, dependencies, redundancy, and backup services.
• Conduct advanced Linux troubleshooting, including log analysis, performance tuning, system recovery, and root-cause analysis.
• Use Bash, PowerShell, Python, and SQL to automate provisioning, monitoring, backups, reporting, patching, configuration validation, and system-administration tasks.
• Administer relational databases such as SQL Server, PostgreSQL, and MySQL.
• Apply DISA STIGs to Windows and Linux systems while evaluating operational impact, vendor support, and SCADA uptime requirements.
• Document STIG findings, exceptions, mitigations, and compensating controls.
• Coordinate with SCADA engineers, electrical/water specialists, application owners, cybersecurity staff, network engineers, and vendors to determine system requirements.
• Test patches, upgrades, and security changes in a testbed environment before production deployment.
• Perform backup testing, restoration validation, disaster recovery checks, and support incident response following failed updates.
• Maintain build guides, configuration baselines, security checklists, dependency diagrams, inventories, recovery procedures, backup documentation, and change records.
• Support safe, reliable operations through strong understanding of high availability, redundancy, safety, and continuous-operation needs for SCADA/industrial systems.

Skills

Linux Administration

Windows Administration

SCADA experience

Automation scripting

DISA STIG compliance

Education

Bachelor’s Degree in Computer Science or IT

Tools

Ubuntu

RHEL

Rocky Linux

CentOS

Ignition SCADA

Rockwell FactoryTalk/PlantPAx

Nutanix virtualization

Job description

Systems Administrator

Concurrent Technologies Corporation

Camp Lejeune, NC

Minimum Clearance Required: Secret

Clearance Level Must Be Able to Obtain: Secret

As a trusted partner and leader in providing energy and sustainability consulting services to the federal government, Concurrent Technologies Corporation (CTC) understands the increasing complexity of achieving energy security and data management in a changing world. As part of the Energy, Resilience and Sustainability (ERS) Division, you will collaborate with experts to provide comprehensive policy, planning, and implementation services to deliver solutions that address critical infrastructure resilience and security, and data management issues and support the military mission, while reducing environmental impacts. We take our role seriously, as our efforts ensure our installations and assets are prepared in any operating environment, present and future.

Key Responsibilities:

• Build, harden, configure, administer, and maintain Linux and Windows servers supporting electrical-distribution, water/wastewater, ADMS, and SCADA applications.
• Administer enterprise Linux platforms, including Ubuntu, RHEL, Rocky Linux, and CentOS, ensuring secure and reliable operation.
• Provision Linux and Windows systems on physical servers and Nutanix-hosted virtual machines.
• Administer SEL computing platforms hosting operational applications and SCADA services.
• Support Inductive Automation Ignition SCADA environments, including gateways, redundant gateways, databases, historians, alarms, logging, certificates, authentication, and communications.
• Support Rockwell Automation environments: FactoryTalk Services Platform, FactoryTalk View SE, PlantPAx, FactoryTalk Historian, licensing, domain-integrated services, SQL databases, and redundant architectures.
• Configure and maintain storage, filesystems, networking, host-based firewalls, service accounts, certificates, NTP, logging, database connections, dependencies, redundancy, and backup services.
• Conduct advanced Linux troubleshooting, including log analysis, performance tuning, system recovery, and root-cause analysis.
• Use Bash, PowerShell, Python, and SQL to automate provisioning, monitoring, backups, reporting, patching, configuration validation, and system-administration tasks.
• Administer relational databases such as SQL Server, PostgreSQL, and MySQL.
• Apply DISA STIGs to Windows and Linux systems while evaluating operational impact, vendor support, and SCADA uptime requirements.
• Document STIG findings, exceptions, mitigations, and compensating controls.
• Coordinate with SCADA engineers, electrical/water specialists, application owners, cybersecurity staff, network engineers, and vendors to determine system requirements.
• Test patches, upgrades, and security changes in a testbed environment before production deployment.
• Perform backup testing, restoration validation, disaster recovery checks, and support incident response following failed updates.
• Maintain build guides, configuration baselines, security checklists, dependency diagrams, inventories, recovery procedures, backup documentation, and change records.
• Support safe, reliable operations through strong understanding of high availability, redundancy, safety, and continuous-operation needs for SCADA/industrial systems.

Basic Qualifications:

• Bachelor’s Degree in Computer Science or IT related field or at least 3 years of experience administering Linux and Windows servers in FRCS/OT or critical-infrastructure environments.
• Experience supporting SCADA, ADMS, industrial-control, or critical-infrastructure applications.
• Advanced enterprise Linux experience (Ubuntu, RHEL, Rocky, CentOS).
• Experience supporting SEL platforms, Ignition, Rockwell FactoryTalk/PlantPAx, and Nutanix virtualization.
• Experience applying and documenting DISA STIG compliance.
• Experience with automation in Bash, PowerShell, Python, and SQL.
• Ability to obtain and maintain a Secret security clearance.
• Ability to obtain and maintain a Secret security clearance.
• Applicable DoD 8140 baseline certification.

Preferred Qualifications:

• Experience with USMC IT and OT/FRCS Systems and cybersecurity processes
• CompTIA Linux+
• Red Hat Certified System Administrator (RHCSA) or Red Hat Certified Engineer (RHCE)
• Linux Foundation Certified System Administrator (LFCS)
• Linux Professional Institute Certification (LPIC)
• Nutanix Certified Professional – Multicloud Infrastructure
• Microsoft Windows Server certification
• Inductive Automation Ignition Core Certification
• SQL Server or PostgreSQL professional training
• SEL platform training
• ICS-CERT cybersecurity training

Why CTC?

• Our teams at CTC are passionate and thrive on collaboration in a high-paced team environment
• When we encounter a difficult problem, we have a variety of talented and diverse employees that work together to solve the toughest challenges
• Competitive salary and benefits package
• Although our work at CTC is extremely important, we also recognize the need for our employees to maintain a proper mix of work and personal life
• Visit www.ctc.com to learn more

Join us!

CTC offers exceptional career growth, cutting edge technology, educational opportunities, and recognition for quality work.

Staffing Requisition: SR# 2026-0120

“We are an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability status, protected veteran status, or any other characteristic protected by law.”