Principal Software Operating System Security Engineer

About the role

At RTX, the world's largest aerospace and defense company, 185,000 great minds are united by purpose and inspired to make a difference solving the world’s most complex problems. With our three market leading businesses, world-class operations and investments in research and development, we offer capabilities and opportunity no one else can. Together, we push the boundaries of known science and find new ways to connect and protect our world. Raytheon brings the strength of more than 100 years of experience and renowned engineering expertise to meet the needs of today’s mission and stay ahead of tomorrow’s threat. We deliver solutions that help our nation and allies defend freedoms and deter aggression, creating a safer, more secure world. Join us and help shape the future of aerospace and defense.

Location: US-MA-WOBURN-WB2 ~ 225 Presidential Way ~ GODDARD BLDG. Position Role Type: Onsite.

Responsibilities

• Design, deploy, and maintain RHEL-based systems in production and development environments.
• Implement OS hardening standards and security controls across Linux systems.
• Develop and maintain automated configuration workflows using Ansible or other IaC/CM tools.
• Write and maintain scripts to support system configuration, monitoring, and operational tasks.
• Apply systems engineering principles to requirements analysis, design documentation, verification, and lifecycle support.
• Troubleshoot complex issues across Linux/Windows hosts, networks, infrastructure services, and applications.
• Collaborate with cross-functional engineering teams to ensure system reliability, security, and scalability.
• Participate in technical reviews, architecture discussions, and design planning.

Requirements

• Active 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.
• Security Clearance Type: DoD Clearance: Secret.
• Ability to obtain INTERIM U.S. government issued security clearance is required prior to start date.

Qualifications

• Typically requires a bachelor’s degree in Computer Science, Computer Engineering, Electrical Engineering, Software Engineering, or related field and minimum 8 years of experience.
• Demonstrated hands-on experience with RHEL administration.
• Demonstrated background in OS hardening, security baselines, and compliance frameworks (e.g., STIGs, CIS Benchmarks).
• The ability to obtain and maintain an Interim Secret U.S. security clearance is required.
• U.S. citizenship is required as only U.S. citizens are eligible for a security clearance.

Skills

• Proficiency in scripting languages such as Bash, Python