ASEC · 7 hours ago
Senior Linux System Administrator
Patuxent River, MD
Full-time
Onsite
Senior Level
$130K/yr - $150K/yr
7+ years expASEC is a company dedicated to providing innovative solutions across engineering, information technology, training, and logistics. The Senior Linux System Administrator will ensure secure configurations and maintain hardened baselines, focusing on system reliability and compliance with security standards.
AerospaceConsultingLogisticsTraining
No H1B
Security Clearance RequiredU.S. Citizen Only
Responsibilities
Ensuring secure and compliant Linux operating system configurations by applying Defense Information Systems Agency (DISA) Security Technical Implementation Guides (STIGs) to prevent misconfiguration and audit issues
Managing vulnerability assessments with Assured Compliance Assessment Solution (ACAS) and EvaluateSTIG, producing accreditation artifacts to maintain Authorization to Operate (ATO) compliance and demonstrate security assurance
Maintaining and securing VMware ESXi hypervisors, including patching and hardening host systems to ensure platform reliability
Automating all routine administrative tasks — including provisioning, configuration management, patching, compliance checks, and reporting — using Red Hat Ansible Automation Platform, improving consistency and reducing manual error
Applying Red Hat Enterprise Linux (RHEL) updates on a monthly basis to maintain a secure, up-to-date environment
Refining processes to align with policy, reduce overhead, and collaborating with DevOps and security teams to support modern automation practices
Releasing RHEL hardened system templates on a quarterly basis with required documentation and ATO submission, ensuring standardized and compliant deployments
Monitoring Linux and ESXi environments for performance, availability, and security issues to sustain system health and resilience
Supporting Risk Management Framework (RMF) compliance (FISMA, NIST 800-53, DoD SRG), ensuring alignment with policy and accreditation requirements
Maintaining accurate technical documentation in Confluence and using Jira Software for task tracking, ensuring procedural clarity and reducing knowledge gaps
Operating and maintaining SolarWinds monitoring and auditing tools to proactively detect anomalies and maintain system integrity
Qualification
Required
Bachelor's degree in Computer Science, Information Systems Management, or related IA/CS field from an ABET-accredited institution; in lieu of degree, and additional 3 years of IT experience on DoD classified networks is required
7 years of related System Administration experience is required; 10+ years with no bachelor's degree
Must have a deep level of knowledge and experience with Red Hat Enterprise Linux (RHEL)
Demonstrated experience with Confluence and Jira
Candidates must hold a current IAT-II certification (e.g., Security +, CCNA Security, CySA+) as defined by DoD 8570.01-M
Candidates must also have a current Operating System certification (e.g., Windows Server, Linux+, Red Hat Certified System Administrator, etc.)
Preferred
Familiarity with SolarWinds monitoring and auditing tools
Familiarity with the Red Hat Ansible Automation Platform
Ability to build positive, collaborative relationships across teams and with external partners
Effective communicator with strong verbal and written skills
Proactive, self-directed work style with the ability to operate independently
Analytical thinker with proven problem-solving capabilities
Highly organized, with the ability to balance competing priorities in a fast-paced environment
Benefits
11 paid holidays
Medical/dental/vision coverage
HSA/FSA options
Disability insurance
401(k) with company match
Tuition assistance for undergraduate and graduate education
Company
ASEC
ASEC is an award-winning, 100% employee-owned business specializing in engineering, IT, training, and logistics, ensuring mission success through specialized expertise and cost-effective solutions.
501-1000 employees
Funding
Current Stage
Late StageLeadership Team
Kristi Rote
Chief Financial Officer
Jared Victory
CIO/Drone Operator
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