Senior Security Controls Assessor

ARETUM Holdings LLC

Public Trust Eligibility Required

About Aretum

Aretum is a mission‑driven organization committed to delivering innovative, technology‑enabled solutions to our customers across defense, civilian, and homeland security sectors. Our teams work at the intersection of strategy, technology, and transformation, helping agencies solve their most critical challenges. We believe in investing in our people and creating a culture where collaboration, inclusion, and professional growth are at the forefront.

Job Summary

Aretum is seeking a motivated and skilled Senior Security Controls Assessor. As a Senior Security Controls Assessor, you will be responsible for conducting comprehensive security assessments of information systems to ensure compliance with applicable security controls and regulations.

Due to the nature of our work as a federal consulting organization, employees may be expected to handle Controlled Unclassified Information (CUI) and must adhere to applicable safeguarding and compliance requirements.

• Independently perform all aspects of the security controls assessment in alignment with NIST 800-53 Revision 5
• Ensure comprehensive understanding and application of ATO documentation requirements
• Coordinate all aspects of testing with relevant stakeholders and team lead
• Develop a security assessment plan with input from stakeholders
• Conduct and lead assessment interviews and tests while managing evidence
• Provide insightful recommendations to improve security posture

• 7 years of applicable experience
• Proficient understanding of NIST RMF
• Expertise in NIST 800-53 Revision 5
• Experience performing assessments using CSAM
• Strong communication and task management skills

Preferred Qualifications

• Active CISSP, CISM, CISA, or equivalent certifications

This is a remote position; however, occasional travel may be required based on project needs, client meetings, team collaboration events, or training sessions. Travel is expected to be less than 10% and will be communicated in advance whenever possible.

Aretum is committed to fostering a workplace rooted in excellence, integrity, and equal opportunity for all. We adhere to merit‑based hiring practices, ensuring that all employment decisions are made based on qualifications, skills, and ability to perform the job, without preference or consideration of factors unrelated to job performance.

As an Equal Opportunity Employer, Aretum complies with all applicable federal, state, and local employment laws.

We are proud to support our nation's veterans and military families, providing career opportunities that honor their service and experience.

If you require reasonable accommodation during the hiring process due to a disability, please contact  for assistance.

Equal Opportunity Employer/Veterans/Disabled

Due to federal contract requirements, only U.S. citizens are eligible for this position. This position supports a federal government contract and requires the ability to obtain and maintain a Public Trust or Suitability Determination, depending on the agency's background investigation requirements.

• Health Care Plan (Medical, Dental & Vision)
• Retirement Plan (401k)
• Life Insurance (Basic, Voluntary & AD&D)
• Paid Time Off
• Family Leave (Maternity, Paternity)
• Short Term & Long‑Term Disability
• Training & Development

ARETUM is an equal opportunity employer, committed to diversity and inclusion. All qualified candidates will receive equal consideration for employment without regard to disability, race, color, religious creed, national origin, sexual orientation/gender identity, or age.

ARETUM utilizes e‑Verify to check employment authorization.

EEO/AA/F/M/Vet/Disabled.