Description
As a Senior Linux Systems Administrator, you will play a crucial role in configuring, maintaining, and optimizing Linux-based server environments supporting a large-scale enterprise infrastructure for USCENTCOM.
Responsibilities:
- Configure, deploy, and maintain Linux server environments, including physical and virtual systems.
- Administer Red Hat and CentOS Linux systems, ensuring stability, performance, and security compliance.
- Configure and manage Linux services such as Apache, Nginx, DNS, DHCP, LDAP, and related system services.
- Monitor system performance and availability, proactively identifying and resolving issues before they impact operations.
- Troubleshoot and resolve complex system issues, including problems without existing documented solutions.
- Implement system patches, updates, and security hardening in accordance with DoD and organizational policies.
- Manage SSL/TLS certificate lifecycle activities supporting Linux-based services.
- Collaborate with infrastructure, network, storage, and security teams to design and implement Linux-based solutions aligned with enterprise requirements.
- Participate in system upgrades, migrations, and the deployment of new Linux infrastructure components.
- Ensure incidents, problems, and service requests are tracked, prioritized, escalated, and resolved appropriately.
- Develop and maintain technical documentation, including system configurations, troubleshooting guides, and standard operating procedures.
- Produce reports and data sets to inform leadership of system performance, trends, and improvement opportunities.
- Provide technical mentorship and guidance to junior administrators and team members.
- Support projects focused on improving the security, efficiency, scalability, and resilience of Linux environments.
- Assist in developing and enforcing system policies and best practices.
- Participate in enterprise initiatives to modernize and standardize infrastructure services.
- Contribute to continuous improvement efforts across Enterprise Services teams.
Requirements:
- 3+ years of related experience
- Certification: Applicable DoW 8140 or DoW 8570 Certification (CompTIA Security + CE cert)
- Demonstrated proficiency administering Red Hat and CentOS Linux systems in enterprise environments.
- Strong experience building, deploying, and maintaining Linux server infrastructures.
- Expertise in system performance tuning, availability management, and security hardening.
- Experience implementing patches, updates, and configuration changes in controlled environments.
- Ability to troubleshoot and resolve complex systems issues under operational constraints.
- Strong documentation skills for system configurations, procedures, and troubleshooting guides.
- Proven ability to work collaboratively across multiple IT disciplines.
Desired Skills:
- Red Hat Certified System Administrator (RHCSA) or higher
- ITIL 4 Foundation Certification
- Experience supporting USCENTCOM environments and familiarity with mission systems and operational requirements.
- Knowledge of enterprise-scale infrastructure operations.
- Experience mentoring junior administrators and contributing to team development.
Benefits:
- Comprehensive benefits and wellness packages
- 401K with company match
- Competitive pay and paid time off
- Award-winning culture of innovation and a military-friendly workplace
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