Network & Computer System Administrator

Who We Are: Oasys International, LLC (Oasys) is a rapidly expanding firm that has been recognized on Inc. 5000 magazine's list of the fastest-growing companies for five consecutive years. We are a dynamic organization dedicated to providing world-class technology consulting services through our team of expert technologists, consultants, engineers, and subject matter experts. At Oasys, we prioritize continuous learning, a healthy work-life balance, and a collaborative work environment.

Our culture is merit-based, recognizing and rewarding performance and fostering a supportive and social atmosphere.

Position Summary:

Oasys is seeking a Network and Computer System Administrator to support the United States Coast Guard (USCG) at the Aviation Logistics Center (ALC)-Information Systems Division (ISD). The Network and Computer System Administrator is responsible for the administration, sustainment, and cybersecurity posture of USCG's hybrid network and system infrastructure.

The Network and Computer System Administrator will support day-to-day operations for LAN/WAN environments, vulnerability remediation, system integration, and secure infrastructure deployment. This position is vital to ensuring mission-essential aviation logistics systems' availability, security, and performance.

Primary Responsibilities:

• Install, configure, maintain, and secure Local Area Networks (LANs), Wide Area Networks (WANs), Kubernetes-based systems, and internet-facing systems across on-prem and cloud-integrated environments.
• Administer network performance monitoring, fault isolation, bandwidth analysis, and throughput optimization to maintain high availability.
• Support implementation of network hardware and software including switches, routers, firewalls, hubs, and cloud-native networking tools.
• Perform vulnerability remediation and implement security baselines in accordance with Tenable, STIG, NIST 800-53, and DHS 4300A standards.
• Manage configuration and updates to networked operating systems (Windows, RHEL) and troubleshoot service disruptions in both physical and virtualized systems.
• Create, review, and update network diagrams, SOPs, and system documentation for audit and ATO sustainment.
• Support installation, configuration, and maintenance of web servers (IIS/Apache) and ensure alignment with agency cybersecurity guidelines.
• Collaborate in Agile Dev Sec Ops  workflows, supporting sprint tasks and documentation via Jira, Bitbucket, and Confluence.
• Conduct on-site visits for installations, surveys, audits, and customer support engagements as required.
• Assist in disaster recovery planning, failover system validation, and network backup strategies.
• Provide Tier II/III technical support and troubleshooting of complex network/system issues with minimal supervision.
• All other duties as assigned by management.

Skills/

Qualifications:

• Hands-on experience with administration of enterprise LAN/WAN environments, including cloud or hybrid topologies.
• Ability to implement and manage network security measures, including VPNs, ACLs, IDS/IPS, and multi-factor authentication integration.
• Working knowledge of virtualization platforms (VMware/Hyper‑V), containerization, and Kubernetes networking.
• Experience applying STIGs, remediating scan findings, and maintaining network/system compliance.
• Strong problem‑solving and analytical skills; ability to troubleshoot across OS, network, and application layers.
• Effective communicator with skills in documentation, change control processes, and stakeholder coordination.

Education/Experience Requirements:

• Bachelor's or Associate's degree in Computer Science, Math, Information Technology, Engineering, or related field. Two (2) years of directly relevant experience may substitute for one (1) year of formal education.
• Minimum of two (2) years in system administration for network protocol
• Minimum of two (2) years of performing security remediation to systems with vulnerabilities based on security scans.
• Minimum of two (2) years of experience designing, analyzing, evaluating, configuring, troubleshooting, and implementing network solutions.
• Minimum of one (1) year of experience in an Agile Dev Sec Ops  software and engineering environment and Methodologies.
• Minimum of one (1) year of experience with Jira, Confluence, and Bitbucket.
• Minimum of one (1) year supporting federal IT systems, preferably DHS or DoD environments.

Clearance:

• U.S. citizenship required
• Must have an active DoD Secret Clearance.

Certification Requirement

• CompTIA Security+
• Additional certifications (Microsoft Certified:
  Windows Server Hybrid Administrator, Red Hat Certified System Administrator (RHCSA), Cisco Certified Network Association (CCNA), ITIL Foundation, or Network+) are a plus.

Work Location:

• Elizabeth City, NC - On‑Site

Oasys is proud to be an equal opportunity employer for all protected groups, including protected veterans and individuals with disabilities.