
Network Administrator
Castellum Inc.
full-time
Posted on:
Location Type: Office
Location: Lakehurst • New Jersey • United States
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Salary
💰 $95,000 - $120,000 per year
About the role
- Install, configure, and maintain network infrastructure including routers, switches, firewalls, and network appliances supporting Navy lab and integration environments.
- Manage VLANs, subnetting, routing, and network segmentation to support isolated test networks and secure development environments.
- Monitor network performance, troubleshoot connectivity issues, and ensure high availability of lab infrastructure supporting development and test activities.
- Implement and maintain network configurations supporting both Windows and Linux systems across development, staging, and test environments.
- Support network configurations required for hardware-in-the-loop (HITL), system integration labs, and simulation environments.
- Configure network segmentation and isolated environments to support cyber testing, vulnerability assessments, and system validation.
- Maintain network diagrams, configuration documentation, and operational procedures.
- Must maintain certifications to monitor/manage all relevant accreditations within lab environment.
Requirements
- A BS/BA degree in Computer Science, Software Engineering, Electrical Engineering, or a related STEM field is preferred.
- Equivalent work experience is acceptable in lieu of a degree.
- Must have a Secret level or higher clearance or be able to obtain a Secret Clearance.
- Must have at least 3 or more years’ experience administering network infrastructure in enterprise, lab, or development environments.
- Security+ CE or the ability to obtain certification within 3-6 months.
- Must achieve CWF status with administrative capabilities
- Experience configuring and managing enterprise networking equipment.
- Knowledge of TCP/IP networking, routing, switching, VLANs, and subnetting.
- Working knowledge of networking concepts (TCP/IP, DNS, DHCP, routing, firewall policies).
- Ability to troubleshoot complex network issues in multi-system environments.
- Experience with networking components supporting containerized and virtualized environments and DevSecOps pipelines.
- Experience with Software Defined Networking (SDN) platforms (VMware NSX, Cisco SD-Access, etc.)
- Experience supporting engineering teams in troubleshooting network issues affecting system performance or testing activities.
- Individuals should be self-starters able to work with little supervision to support cybersecurity compliance.
- Must be able to work collaboratively within a multi-disciplinary team.
Applicant Tracking System Keywords
Tip: use these terms in your resume and cover letter to boost ATS matches.
Hard Skills & Tools
network infrastructureVLANssubnettingroutingnetwork segmentationTCP/IPfirewall policiesnetworking componentsSoftware Defined NetworkingDevSecOps
Soft Skills
troubleshootingself-startercollaborationindependencecommunication
Certifications
Security+ CESecret Clearance