Hybrid Senior Linux System Administrator, HPC

at Resource Management Concepts, Inc.

• Job title: Senior Linux System Administrator, HPC
• Job type: Full Time
• Experience level: Senior
• Salary: $120,000 - $160,000 per year
• Degree requirement: Bachelor's Degree
• Tech skills: Ansible, Apache, Cloud, Linux, NFS, Python, SMTP, Splunk
• Location requirements: Hybrid, Indian Head, United States

About the role

• Senior Linux System Administrator at RMC supporting HPC systems in Indian Head, MD. Collaborating with teams and performing system administration tasks and custom scripting.

Responsibilities

• 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.

Requirements

• 6 - 10 years of Linux Administration experience
• The selected applicant must have DoD 8570/5239 IAT Level 3 Certification (Security X or CISSP) and the ability to work independently and as part of a team.
• The selected applicant must be Red Hat Certified System Administrator (RHCSA) or equivalent.
• Linux system administration knowledge.
• Working configuration management knowledge with Ansible and/or other enterprise tools.
• Working networking technology knowledge.
• Working networked storage knowledge.
• Working knowledge of DISA STIGs.
• Strong troubleshooting and problem-solving skills.
• Strong knowledge on enterprise system administration.
• Strong experience in DevOPs, Cloud and Container administration.

Benefits

• At RMC, we're committed to your career growth!
• RMC differentiates itself from other firms through its investment in our employees.
• We invest our resources to train, certify, educate, and build our employees.
• RMC can offer you a great place to work with a small company feel and give you the experience, tuition assistance, and certifications that will take your career to the next level.
• This also includes a competitive paid vacation package with 11 paid federal holidays.
• Additionally, we also offer high-quality, low-deductible healthcare plans, pet insurance, and a competitive 401K package.