Security Control Assessor

Tantus Technologies, Inc. - recognized by the Washington Post as a Top Workplace - is seeking a Mid-Level Security Control Assessor to conduct independent security assessments and support Assessment and Authorization (A&A) processes for a Federal Client's information systems and cloud environments. You will play a critical role in ensuring compliance with federal security standards by developing and maintaining A&A documentation and collaborating effectively with stakeholders.

*Federal position requires either a US Citizen or Green Card holder for consideration*

• Conduct system security control assessments for federal information systems, applications, and cloud environments (IaaS, PaaS, SaaS).
• Develop and maintain A&A documentation, including System Security Plans (SSPs), Security Assessment Reports (SARs), and Plans of Action and Milestones (POA&Ms).
• Perform risk assessments and recommend actionable mitigation strategies to stakeholders.
• Support the Authorization to Operate (ATO) process by validating security controls and ensuring compliance with federal standards.
• Create and update security documentation, including policies, procedures, and test plans.
• Collaborate with system owners, ISSOs, and IT teams to implement and document security requirements.
• Communicate findings, risks, and mitigation efforts to technical and non-technical stakeholders.
• Prepare for and support security audits, ensuring alignment with compliance goals

• Bachelor’s degree in Cybersecurity, Information Technology, Computer Science, or a related field (or equivalent experience).
• 3-5+ years of experience in security compliance, risk management, or related fields, with strong knowledge of FISMA, NIST (SP 800-53, SP 800-137), and federal security standards.
• Familiarity with tools such as CSAM, eMASS, or Xacta is a plus.
• Preferred certifications: CISSP, CISA, CGRC (formerly CAP), or CISM.
• Ability to manage multiple tasks effectively while working independently and collaboratively.