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Senior Systems Security Engineer

Job in Englewood, Arapahoe County, Colorado, 80151, USA
Listing for: Cyber Defense Technologies
Full Time position
Listed on 2026-10-07
Job specializations:
  • IT/Tech
    Cybersecurity, Systems Engineer, Network Security, Information Security & Data Protection
Salary/Wage Range or Industry Benchmark: 130000 - 190000 USD Yearly USD 130000.00 190000.00 YEAR
Job Description & How to Apply Below

Overview:

Cyber Defense Technologies (CDT) is seeking a proactive Senior Systems Security Engineer to join our team and play a key role in integrating development, security, and operations to enhance our end-to-end system security. In this position, you will be responsible for designing and implementing scalable, functional, and secure systems, while continuously improving the security posture of both our development and production environments.

You will work closely with both development and operations teams to ensure security and best practices are embedded throughout the software lifecycle. The ideal candidate will have a strong Dev Ops background with a deep emphasis on security, strong analytical skills, and a passion for solving complex IT and security challenges. As a Senior Systems Security Engineer, you will lead the design and deployment of our security infrastructure, manage complex security projects, set strategic direction for security practices, and mentor junior engineers.

If you thrive in a collaborative environment and are committed to advancing security in every phase of the development process, we encourage you to apply.

Clearance Requirements:

An active Secret clearance is required, TS preferred. All candidates must be U.S. Citizens. Applicants who do not meet these requirements will not be considered.

Responsibilities include but are not limited to:
  • Design and implement secure automation solutions for development, testing, and production environments.
  • Manage and maintain infrastructure security and monitoring systems.
  • Develop and maintain CI/CD pipelines across multiple environments.
  • Understand and remediate system vulnerabilities and security issues.
  • Collaborate with team members to improve the company’s engineering tools, systems, procedures, and data security.
  • Create and maintain security-related documentation.
  • Stay current with security industry trends, including emerging threats and security solutions.
  • Support incident response and problem management teams by providing containment actions and incident analysis.
  • Developing strategies for security and scalability.
Required Qualifications:
  • Bachelor's degree in Computer Science, Engineering, Information Technology, Cybersecurity, or related technical field; or work relevant work experience equivalent.
  • Minimum 4 years of information security-related experience in areas such as security operations, vulnerability management, security testing, system patching, log analysis, intrusion detection, or security device administration.
  • Knowledge of RMF, Windows/Linux operating systems, STIGs, ACAS, HBSS, and/or related technologies.
  • Demonstrated ability to work independently, analyze root causes, and drive solutions from identification through resolution.
  • U.S. Citizenship and active Secret clearance (or higher), clearable to TS/SCI.
Preferred Qualifications:
  • Bachelor's degree in Systems Security, Network Engineering, Information Technology, or related

    Engineering discipline.
  • 8+ years of experience in IT security or a related field.
  • Relevant experience can be considered as a substitute for the required educational qualifications. Inthe absence of a degree, a minimum of 12 years of related experience is required.
  • Certified Information Systems Security Professional (CISSP) is required.
  • Higher level relevant degree may substitute for experience.
  • Expert 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 Dev Sec Ops  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.
  • Excellent communication skills with the ability to explain complex security topics in an understandable manner.
  • Ability to obtain/maintain a Top Secret U.S. Security Clearance is required.
Travel:

May require CONUS depending on program needs

Why Join Cyber Defense Technologies?

At CDT, we offer a collaborative and inclusive work environment where your expertise in system security can help shape the future of cybersecurity and engineering solutions.

Compensation and Benefits:
  • Competitive salary based. This is not, however, a guarantee of compensation or salary.…
Position Requirements
10+ Years work experience
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