Linux System Administrator; Onsite
Listed on 2026-05-18
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IT/Tech
Cybersecurity, Systems Administrator
Position
System Administrator (Onsite)
LocationUS-IA-CEDAR RAPIDS-136 ~ 855 35
Th St NE ~ BLDG 136
United States of America
Position Role TypeOnsite
Security Clearance RequirementsActive and transferable U.S. government issued security clearance is required prior to start date. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance. DoD Clearance:
Secret. Active and existing security clearance required on day one.
- Install, configure, and maintain Windows, Red Hat Linux, and Ubuntu servers.
- Perform regular system updates, patches, and security configurations.
- Monitor system performance and ensure high availability and reliability.
- Manage user accounts, permissions, and access controls.
- Install and configure Red Hat Enterprise Linux (RHEL) systems.
- Manage software packages using YUM and RPM package management.
- Implement and manage system security policies and SELinux.
- Configure and troubleshoot network settings and services.
- Perform system monitoring and logging using tools like Rsyslog.
- Automate administrative tasks using shell scripting and Ansible.
- Provide technical support and troubleshooting for end-users and internal teams.
- Respond to and resolve system-related incidents and service requests.
- Collaborate with other IT teams to resolve complex issues.
- Implement and maintain security best practices for system administration.
- Conduct regular security audits and vulnerability assessments IAW NIST 800-53.
- Ensure compliance with IT policies and regulatory requirements.
- Develop and implement backup and recovery strategies.
- Perform regular data backups and ensure data integrity.
- Test and validate disaster recovery procedures.
- Maintain accurate and up-to-date documentation of system configurations and procedures.
- Generate regular reports on system performance, security, and compliance.
- University Degree with minimum 5 years prior relevant experience or an Advanced Degree in a related field and minimum 3 years of experience.
- U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance.
- DoD SECRET security clearance required day one.
- DOD 8570 IAT Level II or higher.
- Extensive experience with applying DoD STIGs to RHEL and Ubuntu servers and workstations.
- Proven experience as a System Administrator with expertise in Windows, Red Hat Linux, and Ubuntu.
- Strong knowledge of network protocols, firewall management, and network security.
- Experience with virtualization technologies (VMware, KVM).
- Familiarity with configuration management tools.
- Medical, dental, and vision insurance.
- Three weeks of vacation for newly hired employees.
- Generous 401(k) plan that includes employer matching funds and separate employer retirement contribution, including a Lifetime Income Strategy option.
- Tuition reimbursement program.
- Student Loan Repayment Program.
- Life insurance and disability coverage.
- Optional coverages you can buy pet insurance, home and auto insurance, additional life and accident insurance,critical illness insurance, group legal, protection.
- Birth, adoption, parental leave benefits.
- Ovia Health, fertility, and family planning.
- Adoption Assistance.
- Autism Benefit.
- Employee Assistance Plan, including up to 10 free counseling sessions.
- Healthy You Incentives, wellness rewards program.
- Doctor on Demand, virtual doctor visits.
- Bright Horizons, child, and elder care services.
- Teladoc Medical Experts, second opinion program.
- And more!
The salary range for this role is 86,800 USD - 165,200 USD. The salary range provided is a good faith estimate representative of all experience levels.
Role Type DefinitionsOnsite:
Employees who are working in Onsite roles will work primarily onsite. This includes all production and maintenance employees, as they are essential to the development of our products.
RTX is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability or veteran status, or any other applicable state or federal protected class. RTX provides affirmative action in employment for qualified Individuals with a Disability and Protected Veterans in compliance with Section 503 of the Rehabilitation Act and the Vietnam Era Veterans’ Readjustment Assistance Act.
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