Senior Systems Security Engineer - TS/SCI, Onsite in TX

RTX; Richardson (TX); On-site; USD 96,000 - 182,000; Full time

Benefits offered by this job

Medical, dental, and vision insurance

Three weeks vacation

Generous 401(k) with employer matching

Job summary

RTX in Richardson, TX is seeking a Senior Systems Security Engineer to join onsite. This role requires U.S. citizenship and a TS/SCI clearance, with an active and transferable clearance prior to start date.

You will perform system security engineering for DoD/NIST-aligned environments, implement RMF controls, harden RHEL systems, and develop Ansible automation. Collaboration with cross‑functional teams is essential; travel up to 25% is expected.

Qualifications

• Bachelor's degree in a related field plus 5+ years of security engineering experience.
• Active TS/SCI clearance required prior to start date.
• DoD 8140 certification in line with DoDM 8140.03M.
• Experience with RMF, STIGs, and system accreditation deliverables.

Responsibilities

• Perform system administration and framework duties to ensure proper operation of the product and assist deployed systems.
• Support cybersecurity efforts to lead to Authority to Operate (ATO) for systems.
• Perform security engineering for DoD/NIST aligned systems and ensure adherence to security requirements.
• Design, deploy, configure, and harden RHEL systems within secure architectures.
• Develop and maintain Ansible automation artifacts for configuration management and hardening.
• Support RMF accreditation activities including documentation, assessments, and mitigation plans.
• Conduct security analyses, vulnerability assessments, and remediation planning across components.
• Travel up to 25%.

Skills

RMF familiarity

Ansible automation

RHEL hardening

DoD 8140 cert

Linux/Windows admin

Vulnerability assessment

Education

Bachelor's degree in a related field

Advanced degree

Tools

OpenShift

Kubernetes

Jira/Atlassian

VMware vCenter

HBSS/EDR

Job description

RTX in Richardson, TX is seeking a Senior Systems Security Engineer to join onsite. This role requires U.S. citizenship and a TS/SCI clearance, with an active and transferable clearance prior to start date.

You will perform system security engineering for DoD/NIST-aligned environments, implement RMF controls, harden RHEL systems, and develop Ansible automation. Collaboration with cross‑functional teams is essential; travel up to 25% is expected.