> Markdown version of [/jobs/ext/3665923-sr-systems-security-cyber-engineer-contingent-onsite-aurora-co-ts-sci-required](https://www.wearedevelopers.com/jobs/ext/3665923-sr-systems-security-cyber-engineer-contingent-onsite-aurora-co-ts-sci-required). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

---

# Sr. Systems Security Cyber Engineer - Contingent (Onsite - Aurora, CO) TS/SCI required

- **Company:** RTX
- **Location:** Aurora, CO, United States
- **Experience:** Expert
- **Salary:** $86,800.0 - $165,200.0
- **Contract:** Permanent contract
- **Skills:** Microsoft Windows, Antivirus Softwares, Systems Engineering, Unix, Cloud Computing, Cyber Security, Multi-Factor Authentication, Linux Commands, Network Intrusion Detection Systems, Red Hat Enterprise Linux, Security Information and Event Management, Software Engineering, Virtualization Technology, Containerization, Kubernetes, Scap Compliance Checker, Cisco, Docker, Vulnerability Analysis
- **Published:** October 10, 2026
- **Apply:** https://globalhr.wd5.myworkdayjobs.com/REC_RTX_Ext_Gateway/job/US-CO-AURORA-S76--16430-E-Hughes-Dr--BLDG-S76/Sr-Systems-Security-Cyber-Engineer---Contingent--Onsite---Aurora--CO--TS-SCI-required_01881404

## About the Role

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, * Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and 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
 * Active and transferable TS/SCI U.S. government issued security clearance is required prior to start date
 * DoDM 8140.03 compliant certification (e.g., Security+, CISSP, or equivalent)
 * Experience in Security Technical Implementation Guidance (STIG) and Risk Management Framework (RMF) as described in NIST Special Publication 800-37 and DoD Instruction 8510.01
 * Experience with Systems Security Engineering requirements, specifications, and practice implementing DoD and Federal Assessment and Authorization (A&A) Processes and cybersecurity controls and developing and maintaining associated A&A documentation.
 * Experience with Linux Commands
 * Experience with utilizing vulnerability scanning tools to include Tenable Security Center, STIG Viewer, SCAP Compliance Checker/Tools

Qualifications We Prefer:

 * Experience working on U.S. Government contract proposals as a Cybersecurity Engineering subject matter experienced professional
 * Familiar with cloud and/or virtualization technologies
 * Familiar with Containerization (e.g., Docker/Kubernetes)
 * Familiar with Cross Domain Solutions (CDS)
 * Experience with IT, network, and system security administration, including security configuration and account management best practices for Windows, UNIX, Red Hat Enterprise Linux, and Cisco Systems
 * Experience utilizing information security toolsets, including anti-virus, vulnerability assessment, HIDS/NIDS, host-based and endpoint security, Multi-Factor Authentication (MFA), Security Information and Event Management (SIEM), and centralized auditing resources
 * Previous experience with Program Protection Plans (PPP), DoDI 5000.02, and DoDI 5200.39
 * Experience with implementing highly technical solutions and reporting their importance to program managers and stakeholders
 * Written and verbal communications skills, with the ability to work independently

## Description

* Support the development of RMF documents and controls validation testing for Authorizations to Operate (ATOs)
 * Ensure proposed system changes are reviewed and implemented to ensure that system modifications do not adversely affect the security of the system
 * Implement security improvements by assessing the current situation; evaluating trends; and anticipating requirements
 * Support the development of cybersecurity requirements, design and architecture artifacts, plans, and policies
 * Analyze collected cybersecurity data and test results
 * Have hands-on technical duties and will provide on-site security engineering, systems administration, and cybersecurity support to the program
 * Work with the Software Engineering and/or System Engineering teams to implement cybersecurity policies, harden the system, and document findings
 * CONUS/OCONUS travel (up to 25%)

What You Will Learn:

 * You will enhance your leadership capabilities and systems security engineering expertise, gaining specialized skills that will differentiate you in the industry

 * You will develop deep technical expertise to become a cybersecurity subject matter expert (SME), while gaining valuable exposure to multiple business models and product lines in a dynamic, ever-evolving field. We are growing and so can you!