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Junior System Administration/ISSE
Chantilly, VirginiaOverview: Cyber Defense Technologies (CDT) is currently seeking a skilled System Administrator/ISSE to support, secure, and maintain Linux-based systems in a mission-critical environment. This role blends hands-on system administration with security engineering responsibilities, ensuring systems are reliable, compliant, and resilient against threats. This position will be onsite in Chantilly, VA.
Clearance Requirements: An active Top Secret/SCI with Full Scope Polygraph clearance is required. Applicants who do not meet these requirements will not be considered.
Responsibilities:
At CDT, we offer a collaborative and inclusive work environment where your expertise can help shape the future of cybersecurity and engineering solutions.
Compensation and Benefits:
Apply Now:
If you are a proactive System Administration/ ISSE and thrive in dynamic environments, we encourage you to apply and join the CDT team!
Clearance Requirements: An active Top Secret/SCI with Full Scope Polygraph clearance is required. Applicants who do not meet these requirements will not be considered.
Responsibilities:
- Administer, maintain, and troubleshoot Linux systems (e.g., RHEL, Rocky, Ubuntu)
- Install, configure, and manage servers, services, and applications
- Perform system monitoring, performance tuning, and capacity planning
- Manage user accounts, permissions, and access controls
- Apply patches, updates, and system hardening best practices
- Support backup, recovery, and disaster recovery operations
- Create and maintain system documentation and SOPs
- Implement and maintain security controls in accordance with organizational and regulatory requirements
- Support system accreditation and compliance efforts (e.g., RMF, NIST 800-53, STIGs)
- Conduct vulnerability assessments, remediation, and security hardening
- Analyze system logs and security alerts; respond to incidents as needed
- Collaborate with cybersecurity teams to assess risks and implement mitigations
- Ensure secure configurations across operating systems and services
- 2+ years of experience as a Linux System Administrator or similar role
- Strong experience administering Linux systems in production environments
- Working knowledge of system security principles and best practices
- Experience with system hardening, patch management, and access control
- Ability to troubleshoot complex system and security issues
- Strong documentation and communication skill
- Experience as an ISSE or in a security-focused systems role
- Familiarity with security frameworks (NIST, RMF, CIS, or equivalent)
- Familiarity with DISA STIGs and compliance tools (e.g., SCAP, OpenSCAP)
- Scripting experience (Bash, Python, Ansible, etc.)
- Experience with virtualization or containers (VMware, KVM, Docker, Kubernetes)
- Experience with monitoring and logging tools (Splunk, ELK, Prometheus, etc.)
- Security certifications (Security+, CISSP, SSCP, Linux+), or working toward one
At CDT, we offer a collaborative and inclusive work environment where your expertise can help shape the future of cybersecurity and engineering solutions.
Compensation and Benefits:
- Competitive salary based on experience.
- Comprehensive benefits package, including health, dental, and retirement plans.
- Opportunities for professional development and career advancement.
Apply Now:
If you are a proactive System Administration/ ISSE and thrive in dynamic environments, we encourage you to apply and join the CDT team!