Senior Linux System Administrator

Data Machines seeks an experienced Senior Linux System Administrator to join our Infrastructure team supporting mission-critical systems and cloud infrastructure for federal government, defense, and intelligence customers. The ideal candidate will have extensive experience administering Linux-based environments, troubleshooting complex systems, and supporting secure, high-performance computing platforms.

This position involves maintaining and enhancing our OpenStack cloud infrastructure, collaborating with cybersecurity teams, and ensuring the reliability, security, and performance of our systems.

As a member of the Data Machines Infrastructure team, responsibilities include:

• Monitoring and responding to hardware, software, and system outages across the platform.
• Supporting tenants and users of the OpenStack Cloud Platform by troubleshooting technical issues and responding to requests.
• Implementing cybersecurity remediations in collaboration with the cybersecurity team.
• Installing, upgrading, configuring, and deploying applications across the platform.
• Integrating new hardware into multiple compute clusters.
• Supporting system maintenance, software patching, performance monitoring, and research and development activities.
• Reviewing and maintaining technical procedures, system configurations, and documentation.

• Active Top Secret security clearance with SCI eligibility and willingness and ability to obtain a CI polygraph.
• Bachelor’s degree in Computer Science, Information Systems, Software Engineering, or a related technical field. Four additional years of relevant experience may be substituted for a bachelor’s degree.
• 12+ years of demonstrated experience administering Linux-based environments.
• Experience with Docker/Podman, Packer, GitLab, and GitLab Runners.
• Experience providing Tier 1 and Tier 2 technical support and troubleshooting complex environments.
• Ability to support a wide range of technical tasks, including software upgrades, patching, system monitoring, and research and development.

Preferred Qualifications:

• Hands-on experience with automation and configuration management tools such as Ansible, Bash, and Terraform.
• Working knowledge of security tools such as Security Center, Carbon Black, and McAfee.
• Knowledge of DISA Security Technical Implementation Guides (STIGs) for Linux operating systems.
• Full-stack development experience with Python.
• Experience with Kubernetes or Nomad orchestration.
• Experience with data-driven technologies such as Hadoop, HDFS, Elasticsearch, and YARN.
• Familiarity with cybersecurity accreditation processes, including RMF, ATO, and NIST 800-53 controls.
• Experience with CI/CD and security testing tools such as SonarQube, Fortify, or similar technologies.
• Experience with cybersecurity tools such as Security Onion, PCAP, Snort, and Bro/Zeek.
• Strong verbal, written, and organizational skills.
• Ability to adapt quickly to changing priorities and ad hoc requests.
• Ability to work independently and collaboratively in a team environment.

Education:

• Bachelor’s degree in Computer Science, Information Systems, Software Engineering, or a related technical field.
• Four additional years of relevant experience may be substituted for a bachelor’s degree.