Red Sun Technology is seeking an experienced Red Hat Systems Administrator to support the administration, configuration, and optimization of Red Hat Enterprise Linux (RHEL) systems across a complex, mission-critical IT environment. The ideal candidate will be a Red Hat Certified Systems Administrator (RHCSA) and possess deep expertise in Unix (AIX), IBM pSeries systems, and enterprise-level server management.
This is a 100% onsite role in Annapolis, Maryland requiring advanced technical skills and a strong ability to collaborate with security, application, and infrastructure teams in a 24/7 support environment.
Minimum Requirements
- Bachelor’s or postgraduate degree in Computer Science, Engineering, or a related field
- Valid Red Hat Certified Systems Administrator (RHCSA) certification (must include certification number)
Preferred Qualifications
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10+ years experience as a Red Hat System Administrator
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10+ years administering Unix (AIX) IBM pSeries systems
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15+ years of total IT experience
Key Responsibilities
- Install, configure, and maintain Red Hat Enterprise Linux (RHEL) servers across dev, test, and prod environments
- Perform patching, system upgrades, and security hardening per industry and agency standards
- Monitor performance and troubleshoot RHEL systems to minimize downtime
- Automate system administration tasks with Ansible, Bash, or Python
- Configure and maintain Red Hat Satellite, IdM, and other RHEL tools
- Collaborate with cybersecurity teams to ensure security compliance and vulnerability mitigation
- Manage storage, backup, and disaster recovery solutions, including Rubrik and Oracle DB backups
- Configure NFS mounts, cron jobs, and support application deployment
- Maintain system documentation, procedures, and runbooks
- Participate in on-call support rotations and rapid incident response
Preferred Technical Experience
Experience working with or supporting:
- Oracle WebLogic / Database Servers
- Progress 4GL / OpenEdge
- Apache Web Servers
- vSphere-hosted RHEL
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Rubrik, Mobius, PeopleSoft, Elastic Search
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Oracle BI (OBI), CVS (Concurrent Version System)
Preferred Skills & Environment
- Strong experience with Red Hat performance tuning
- Expertise in load balancing, partitioning, backup, and disaster recovery
- Familiarity with 24/7 mission-critical environments
- Some knowledge of application development, electronic imaging, and Red Hat support ticketing processes
Soft Skills
- Strong communication and documentation skills
- Comfortable interfacing with helpdesk, end users, and technical teams
- Proven leadership and mentoring ability
- Able to work independently and as part of a team