Castellum Inc.

Network Administrator

Castellum Inc.

full-time

Posted on:

Location Type: Office

Location: LakehurstNew JerseyUnited 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