
Systems Administrator
Castellum Inc.
full-time
Posted on:
Location Type: Office
Location: Lakehurst • New Jersey • United States
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Salary
💰 $85,000 - $105,000 per year
Tech Stack
About the role
- Install, configure, and maintain Windows Server and Linux operating systems in development, integration, test, and production environments
- Perform system monitoring, performance tuning, and troubleshooting to maintain high system availability
- Administer user accounts, permissions, and group policies across enterprise systems
- Manage server patching, updates, and system lifecycle maintenance
- Vulnerability Management & Continuous Monitoring
- Support virtualized environments (VMware, Hyper-V, or similar platforms)
- Manage storage allocation, system backups, and disaster recovery procedures
- Maintain system documentation, architecture diagrams, and configuration baselines
- Support integration of systems into secure Navy networks and enclaves
- Collaborate with developers, cybersecurity personnel, and engineers to support application hosting environments
- Assist with infrastructure support for DevSecOps pipelines and containerized environments where applicable
- Provide technical recommendations for system improvements, modernization, and performance optimization
- 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 systems administration experience supporting enterprise IT environments
- Security+ CE or the ability to obtain certification within 3-6 months
- Must achieve CWF status with administrative capabilities
- Experience administering both Windows Server and Linux systems (RHEL/CentOS/Ubuntu)
- Experience with virtualization platforms (VMware, Hyper-V, or similar platforms)
- Working knowledge of networking concepts (TCP/IP, DNS, DHCP, routing, firewall policies)
- Familiarity with DevSecOps tools and CI/CD pipelines
- 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
Benefits
- Equal employment opportunity (EEO) to all employees and applicants without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability status, genetic information, marital status, ancestry, protected veteran status
- Reasonable accommodation that does not cause an undue hardship on the company may be made to enable individuals with disabilities to perform essential functions.
Applicant Tracking System Keywords
Tip: use these terms in your resume and cover letter to boost ATS matches.
Hard Skills & Tools
Windows ServerLinuxsystem monitoringperformance tuningtroubleshootingvulnerability managementDevSecOpsnetworking conceptssystem administrationstorage allocation
Soft Skills
collaborationself-starterindependenceteamworkcommunication
Certifications
Security+ CESecret Clearance