Resource Management Concepts, Inc.

System Administrator

• Provide Linux based workstation and server support to an RDT&E environment
• Perform day-to-day administrative tasks related to managing a RedHat Linux based cluster
• Create custom scripts (Bash, Python, Powershell) for operational management
• Install, configure, and maintain software applications and hardware
• Use Ansible to manage configuration requirements on RHEL and Ubuntu systems
• Deploy and support cloud infrastructure
• Deploy and support container infrastructure/orchestration including Kubernetes, Docker
• Support a DevOps infrastructure and provide technical assistance
• Create and maintain detailed documentation of systems configuration and procedures
• Provide secondary support to core and end user RHEL systems as needed.

Senior Linux System Administrator

• RMC is hiring for a Senior Linux System Administrator who will provide Linux based workstation and server support to an RDT&E environment to support our HPC system at Indian Head, MD (Mainside).
• The selected applicant will work as part of an integrated team including system administrators, network engineers, software developers, service desk analysts, and other personnel on site.
• The applicant must have general experience performing day-to-day administrative tasks related to managing a RedHat Linux based cluster to include storage and networking.
• The applicant must have experience creating custom scripts (Bash, Python, Powershell, etc) to assist with administrative and operational management of a RedHat based HPC cluster.
• Install, configure, maintain and monitor software applications, operating system, development tools, hardware and storage of the HPC Cluster.
• The applicant must have experience with managing a SLURM Workload Manager cluster or other similar job scheduling manager in an HPC cluster.
• The applicant must have working knowledge of configuration management tools such as Ansible.
• The applicant must have working knowledge of network technology to include IP addressing, VLANS, trunks, LAG, Infiiniband, switch configuration and networking security practices.
• The applicant will collaborate with end users and core RDTE staff to provide technical assistance in troubleshooting issues related to the cluster performance and submitted job execution.
• The applicant must create and maintain detailed documentation of systems configuration, standard operating procedures (SOP), end user guides and troubleshooting guides.
• The applicant must have working knowledge of DISA STIGs to include RedHat STIG and applying them to systems.
• The applicant must provide secondary support to core and end user RHEL systems as needed.
• The applicant must have working knowledge of storage technology to include NFS, SCSI, SAN/NAS, SMB/CIFS and other protocols to include configuration.
• Administered Splunk forwarders and indexers on RHEL/CentOS systems, managing OS-level services, resource tuning, log ingestion pipelines, and secure data flows using TLS and role-based access controls.
• Configured and maintained enterprise proxy services (Squid/Apache) and SMTP relays (Postfix/Sendmail) to support outbound system communications, alerting, and automated job notifications across HPC clusters.
• Implemented centralized logging for kernel, auditd, syslog, and application logs, integrating with Splunk for real-time monitoring, custom dashboards, and automated alert thresholds to support high-availability operations.

Senior Linux System Administrator, HPC

Technical Writer

• - Develop, update, and maintain technical procedures, work instructions, and process documentation supporting IT operations and services
• - Collaborate with engineers, system administrators, cybersecurity staff, and other subject matter experts to gather and validate technical information
• - Translate complex technical and operational processes into clear, structured, and usable documentation for internal audiences
• - Ensure documentation complies with organizational instructions, formatting standards, and review/approval requirements
• - Maintain documentation repositories, including version control, document tracking, and approval status
• - Update documentation in response to process changes, system updates, audits, or operational findings
• - Edit and standardize documentation authored by SMEs to ensure clarity, consistency, and completeness
• - Develop and maintain documentation templates, checklists, and standard formats to support consistency across teams
• - Support reviews, walkthroughs, and audits by ensuring documentation is complete and accessible
• - Coordinate with stakeholders to manage document reviews, comments, and approvals through established workflows and tools
• - Use Microsoft Excel or similar tools to support document tracking and organization efforts

Security Engineer

• Administer, monitor, and secure enterprise network infrastructure, including firewalls, VPNs, IDS/IPS, and network segmentation
• Manage and harden Linux-based systems (servers, appliances, and security tools)
• Implement and maintain Splunk for log aggregation, security monitoring, alerting, and dashboards
• Analyze security logs and network traffic to detect, investigate, and respond to security incidents
• Develop and maintain Splunk searches, reports, and alerts to support SOC and compliance requirements
• Perform vulnerability assessments, security audits, and remediation activities
• Apply security patches, updates, and configuration changes across network and Linux environments
• Support incident response efforts, including root cause analysis and post-incident reporting
• Collaborate with IT, SOC, and application teams to improve security architecture and processes
• Document network security configurations, procedures, and incident response actions
• Ensure compliance with internal policies and external regulatory requirements

Information Security Specialist

Analyst

• Perform data gathering and develop documentation to provide vulnerability assessment at the system level
• Develop and maintain system certification and accreditations according to DoD's Risk Management Framework (RMF), POAM, and Documentation
• Participate in system vulnerability audits utilizing current scanning tools
• Perform compliance assessment and produce analysis reports for accredited systems
• Participate in collaboration calls with upper echelon working groups
• Conduct an independent, comprehensive assessment of the management, operational, and technical controls employed within or inherited by a Navy system.
• Assess and verify that systems have implemented the approved security control baseline
• Provide response to assigned Service Now incident requested and service requests

Senior Linux System Administrator

Senior Linux System Administrator, HPC

Technical Writer

Information Security Specialist

A&A Analyst, Level 1