Systems Security Engineer III

Sierra Nevada Corporation • Englewood, CO

5h

About The Position

The Systems Security Engineer III will drive security across development and operational environments, working closely with engineering, operations, and security teams to build security into every stage of the software lifecycle. The role advances DevSecOps practices by identifying vulnerabilities through static code analysis and fuzzing, improving secure software delivery through CI/CD automation, and addressing complex technical challenges. The engineer will lead initiatives that strengthen system security and resilience while helping shape cybersecurity capabilities using modern cloud and automation technologies.

The position supports SNC’s ISR, Aviation, and Security business area and its work on the U.S. Air Force’s Survivable Airborne Operations Center mission. It requires a current, active Secret U.S. security clearance, and the ability to obtain and maintain a Top Secret clearance. U.S. citizenship is required for the active clearance needed for employment.

Requirements

• Bachelor’s degree in Systems Security, Network Engineering, Information Technology, or a related engineering discipline; relevant experience may substitute for the required education. Without a degree, at least 9 years of related experience is required. A higher-level relevant degree may substitute for experience.
• At least 5 years of experience in IT security or a related field.
• Advanced understanding of cybersecurity principles and practices.
• Experience with security frameworks and standards such as NIST and ISO 27001.
• Proven work experience as a DevSecOps Engineer or in a similar role spanning development, operations, and security.
• Knowledge of cloud technologies and architectures, such as Azure or AWS.
• Experience with secure coding practices and automating security testing tools.
• Proficiency with containerization technologies such as Docker and orchestration tools such as Kubernetes.
• Experience with automation scripts and configuration management tools.
• Excellent communication skills and the ability to explain complex security topics clearly.
• Current, active Secret U.S. security clearance.
• Ability to obtain and maintain a Top Secret U.S. security clearance.
• U.S. citizenship is required for the active security clearance needed for employment.

Nice To Haves

• 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) certification.
• Microsoft Certified Solutions Expert (MCSE) or Linux certification.
• Experience in the aerospace or defense industry.

Responsibilities

• 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.

Benefits

• Medical, dental, and vision plans.
• 401(k) with a 150% match up to 6%.
• Life insurance.
• Three weeks of paid time off.
• Tuition reimbursement.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior