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Information System Security Officer II; TS​/SCI Clearance Required

Job in Centennial, Arapahoe County, Colorado, USA
Listing for: Sierra Space
Full Time position
Listed on 2025-11-29
Job specializations:
  • IT/Tech
    Cybersecurity, Information Security
Salary/Wage Range or Industry Benchmark: 94050 USD Yearly USD 94050.00 YEAR
Job Description & How to Apply Below
Position: Information System Security Officer II (TS/SCI Clearance Required)

Sierra Space Careers:
Dare to Dream

We honor those that are not afraid to dream big dreams, those that tenaciously chase their dreams even when others say it cannot be done, those that achieve big dreams and change everything. Those are Dreams Worth Chasing.

At Sierra Space we envision a future where humanity lives and works in space, on moons, and on distant planets. Our mission isn't restricted to the few, instead we see a future where all people can choose to live, work, discover and explore beyond our planet. Our company is building a platform in space to benefit life on Earth and together we will alter the course of humanity.

We have a bold mission. We are a bold company. Together, we are an extraordinary team.

About the Role

We are seeking a highly skilled and experienced Information Systems Security Officer (ISSO) with a strong emphasis on the Risk Management Framework (RMF). The ISSO will be responsible for ensuring the security and integrity of our information systems by implementing and managing security measures in accordance with RMF guidelines. The ideal candidate will have a deep understanding of RMF processes, cybersecurity principles, and compliance requirements.

Key Responsibilities
  • Develop, implement, and maintain security policies, procedures, and controls in accordance with RMF guidelines.
  • Conduct risk assessments to identify potential security threats and vulnerabilities.
  • Develop and maintain System Security Plans (SSPs) and other required documentation.
  • Ensure compliance with federal, state, and organizational security regulations and standards.
  • Perform continuous monitoring of information systems to detect and respond to security incidents.
  • Collaborate with system owners, administrators, and other stakeholders to ensure security controls are effectively implemented.
  • Conduct security control assessments and audits to evaluate the effectiveness of security measures.
  • Provide guidance and support for the development and implementation of security controls.
  • Prepare and present security status reports to management and other stakeholders.
  • Stay current with emerging security trends, threats, and technologies.
About You

Our mission is driven by the unwavering passion to push the boundaries of what is possible. We seek those who Dare to Dream - to envision the extraordinary and pursue it relentlessly - to join us on this transformational journey.

We're looking for dreamers who align with our values, vision and audacious goals - while also meeting the minimum qualifications below. The preferred qualifications are a bonus, not a requirement.

Minimum Qualifications
  • Requires Bachelor's degree in a related field (or equivalent work experience in lieu of degree).
  • Typically 2+ years of related experience.
  • Certifications:

    (1 or more required) GIAC (Global Information Assurance Certification), network technology
  • certifications such as a CCNP (Cisco Certified Network Professional), or SANS level 200 courses.
  • Knowledge of secure software development.
  • Knowledge of cyber supply chain threat monitoring.
  • An active Top Secret with SCI eligibility and the ability to obtain a CI polygraph U.S. Security Clearance.
Preferred Qualifications
  • In-depth knowledge of RMF processes, NIST SP 800-37, NIST SP 800-53, and other relevant standards.
  • Experience with security assessment and authorization (A&A) processes.
  • Strong understanding of cybersecurity principles, including risk management, incident response, and vulnerability management.
  • Relevant certifications such as CISSP, CISM, CAP, or similar are highly desirable.
  • Excellent analytical, problem-solving, and communication skills.
  • Ability to work independently and as part of a team in a fast-paced environment.
Compensation

Pay Range: $94,050 - $

Your actual base compensation will be determined on a case-by-case basis and may vary based on job-related knowledge and skills, education, experience, internal equity and market competitiveness.

IMPORTANT NOTICE

This position requires current/active Top Secret with SCI eligibility and current CI polygraph U.S. Security Clearance. U.S. Citizenship status is required as this position needs an active U.S. Security Clearance for employment. Non-U.S. Citizens may not be eligible to obtain a security clearance. The Department of Defense Consolidated Adjudications Facility (DoD CAF), a federal government agency, handles the adjudicative aspects of the security clearance eligibility process for industry applicants.

Adjudicative factors which affect the outcome of the eligibility determination include, but are not limited to, allegiance to the U.S., foreign influence, foreign preference, criminal conduct, security violations and illegal drug use.

Elevate Your Career

At Sierra Space, we are committed to your personal and professional development. We empower you to make profound and meaningful contributions and foster a vibrant culture of collaboration, where teamwork ignites breakthrough innovations.

Sierra Space offers annual incentive pay based upon performance that is…

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