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# Systems Security Engineer III

- **Company:** Sierra Nevada Corporation.
- **Location:** Denver, CO, United States
- **Experience:** Expert
- **Salary:** $114,000.0 - $157,000.0
- **Contract:** Permanent contract
- **Skills:** Artificial Intelligence, Amazon Web Services, Computer Vision, Automation of Tests, Microsoft Azure, Software as a Service, Cloud Computing, Cyber Security, Information Systems, Linux, Information Systems Security Architecture Professional, Information Systems Security Engineering Professional, Secure Coding, Workflow Management Systems, Containerization, Kubernetes, Infrastructure Automation Frameworks, Information Technology, Devsecops, Docker
- **Published:** November 6, 2026
- **Apply:** https://www.builtincolorado.com/job/systems-security-engineer-iii/12101358?handler=ApplyRedirect

## About the Role

* Bachelor's degree in Systems Security, Network Engineering, Information Technology, or related Engineering discipline.

 * 5+ years of experience in IT security or a related field.

 * Relevant experience can be considered as a substitute for the required educational qualifications. In the absence of a degree, a minimum of 9 years of related experience is required.

 * Higher level relevant degree may substitute for experience.

Technical Expertise

 * Advanced understanding of cybersecurity principles and practices.

 * Experience with security frameworks and standards such as National Institute of Standards and Technology (NIST), ISO 27001.

 * Proven work experience as a DevSecOps Engineer or similar role in development, operations, and security.

 * Knowledge of cloud technologies and architectures (Azure / AWS).

 * Experience in secure coding practices and automating security testing tools.

 * Proficient with containerization technologies like Docker and orchestration tools like Kubernetes.

 * Experience with automation scripts and configuration management tools.

Additional Requirements

 * Excellent communication skills with the ability to explain complex security topics in an understandable manner.

 * Must have current Secret U.S. Security Clearance.

 * Ability to obtain/maintain a Top Secret U.S. Security Clearance is required.

Qualifications We Prefer

 * Information Systems Security Engineer Professional (ISSEP), Certified Authorization Professional (CAP), or Certified Information Security Manager (CISM) Certification.

 * Security+, Certified Information Systems Auditor (CISA), or CompTIA Advanced Security Practitioner (CASP+) Certification.

 * Certified Information Systems Security Professional (CISSP)

 * Microsoft Certified Solutions Expert (MCSE) or Linux.

 * Experience in the aerospace or defense industry.

## Description

* Design and implement secure automation solutions across development, test, and production environments.

 * Lead the development and enhancement of secure CI/CD pipelines that enable reliable software delivery.

 * Drive improvements in infrastructure security, monitoring, and vulnerability management capabilities.

 * Identify, assess, and remediate security risks across systems, applications, and cloud environments.

 * Partner with engineering, operations, and security teams to embed security throughout the development lifecycle.

 * Support incident response activities through investigation, analysis, and containment efforts.

 * Research emerging threats and technologies to continuously strengthen security capabilities and practices.

 * Provide technical leadership, mentorship, and strategic guidance on security and scalability initiatives., Lead the design, implementation, and maintenance of secure IT infrastructure. Harden Windows systems, Active Directory domains, hypervisors, and security configurations; manage PKI and Group Policy; conduct threat monitoring, vulnerability assessments, incident response, and digital forensics. Develop security controls, document breaches, evaluate security technologies, and mentor junior engineers. The role requires an active Secret clearance, ability to obtain Top Secret with SCI eligibility, and occasional travel.
Top Skills: Active DirectoryAntivirusCiscoFirewallsGroup Policy Objects (Gpos)HypervisorsIntrusion Detection Systems (Ids)Iso 27001LinuxNistPublic Key Infrastructure (Pki)Windows
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