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Sr Linux Systems Administrator
| Company | RTX |
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| Location | El Segundo, CA, USA |
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| Salary | $90000 – $182000 |
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| Type | Full-Time |
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| Degrees | Bachelor’s |
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| Experience Level | Senior |
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Requirements
- Typically requires a University degree or equivalent experience and a minimum of 5 years of prior relevant experience or an Advanced Degree in a related field and minimum 3 years experience.
- Active and transferable U.S. government issued Secret security clearance is required prior to start date. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance.
- Experience with RHEL 7/8/9, including systemd, firewalld, and SELinux.
Responsibilities
- Administer, patch, and harden Red Hat Enterprise Linux (RHEL) and related distributions.
- Collaborate with Cyber to maintain and monitor system availability, performance, and logs using enterprise tools.
- Configure and maintain STIG-compliant systems in accordance with DoD security standards.
- Automate system tasks using Ansible and Bash shell scripting
- Troubleshoot hardware and software issues across physical and virtualized environments (VMWare)
- Work closely with security, network, and development teams to support mission objectives.
- Support audit readiness activities and respond to security vulnerability findings.
- Provide mentorship and guidance to junior system administrators.
- Leverage ticketing system to resolve incidents submitted by end users.
Preferred Qualifications
- Experience with enterprise logging, monitoring, and alerting systems.
- Experience with automation tools such as Ansible.
- Experience with CIS/STIG benchmarks and DoD security standards.
- Experience with Databases including MariaDB, Oracle, and SQL
- Linux OS Certificate ( RHCSA / Linux+ )
- Experience with scanning tools such as Nessus and SCAP
- Experience with Splunk
- Experience with High Performance Computing ( HPC ) Environments
- Experience with NetApp / OnTap tools
- Experience with Enterprise Active Directory (AD) & LDAP
- Experience dealing with Managed Anti-Virus (AV) solutions ( ClamAV & SEM ).
- Scripting Experience (Bash, Python, Ansible) and Kickstart
- Experience hardening systems using tools like SCAP and following STIGs.
- Experience supporting engineers in software, simulations, and hardware development.
