Security Controls Assessor

Job Description ECS is seeking a Security Controls Assessor to work in our Washington, DC (hybrid) office. Please Note: This position is contingent upon contract award. ECS seeks a Security Controls Assessor to support a full range of cybersecurity services on a long-term, full-time contract with a U.S. Government civilian agency. This position requires mostly CONUS and occasional OCONUS assessments and is available immediately for a qualified candidate with an active security clearance. Key Responsibilities Review and update information security policies, standards, and procedures in accordance with federal and departmental regulations Perform independent security and privacy control assessments on behalf of the client CSO in support of Security Assessment & Authorization (SA&A) Assess existing and new FISMA systems and subsystems, and communicate findings and potential impacts of identified control weaknesses Review and analyze A&A packages—including System Security Plans (SSP), Risk Assessments, Information System Contingency Plans (ISCP), Backup SOPs, Incident Response Plans (IRP), Configuration Management Plans (CMP), hardware/software inventories, network diagrams, data flows, system change requests, vulnerability scan reports, test reports, and POA&Ms—for completeness, accuracy, and effective control implementation Develop and maintain test cases for control-level security testing across system components (applications, servers, databases, operating systems, network devices, end-user devices, etc.) Develop and execute security and privacy assessment plans in accordance with NIST SP 800-53A, supporting RMF Steps 4–6 Document findings and recommendations that are clear, system-specific, and actionable Analyze security tool outputs to distinguish residual risk from false positives prior to finalizing findings CONUS and OCONUS travel to conduct system assessments Active Secretclearance required with eligibility to get Top Secretclearance Bachelor's degree in Computer Science, MIS/IT, Engineering, Information Security/Assurance, or a related field Minimum five (5) years of information security experience Minimum three (3) years of experience supporting security assessment teams, including planning assessments and serving as a senior team member Two (2) years of experience using GRC tools Demonstrated experience conducting full-scope technical security control testing across component types, including development of security and privacy assessment plans Working knowledge of RMF Steps 1-6 Strong understanding of NIST SP 800-53 controls, the NIST Cybersecurity Framework, and applicable information security/privacy laws and regulations Ability to analyze information system configurations and technical specifications against NIST SP 800-53 and related overlays Excellent written and verbal communication skills, with the ability to present control requirements and deficiencies clearly to both technical and non-technical audiences Desired Skills Assessment and Authorization (A&A) activities, including risk assessments, Security Plans, Security Controls Assessments (SCA), and related documentation Current industry practices for evaluating, implementing, and disseminating IT security assessment, monitoring, detection, and remediation tools Assessing systems hosted in AWS and/or Azure cloud environments Conducting assessments in accordance with OMB, NIST, and FedRAMP policies, procedures, and standards One of the following: CISSP (Certified Information Systems Security Professional) CEH (Certified Ethical Hacker) CRISC (Certified in Risk and Information Systems Control) CISA (Certified Information Systems Auditor) AAIA (Advanced in AI Audits) ECS Federal LLC is an equal opportunity employer and does not discriminate or allow discrimination on the basis any characteristic protected by law. All qualified applicants will receive consideration for employment without regard to disability, status as a protected veteran or any other status protected by applicable federal, state, or local jurisdiction law. Everforth ECS is the federal segment of Everforth , a $4B global organization with over 10,000 employees. Our nearly 3,500 professionals deliver advanced technology solutions in data and AI, cybersecurity, and enterprise transformation, serving defense, intelligence, and federal civilian agencies. Our work powers mission-critical outcomes, strengthens technology partnerships, and creates meaningful opportunities for our people. We are defined by a commitment to excellence in delivery, a culture of innovation, and an environment where talent can thrive and grow. We value: Attracting and developing top talent and high-performing teams Fostering a culture that is engaging, accountable, and mission-driven Meet the challenge. Make a difference with Everforth ECS! Everforth ECS is the federal segment of Everforth , a $4B global organization with over 10,000 employees. Our nearly 3,500 professionals deliver advanced technology solutions in data and AI, cybersecurity, and enterprise transformation, serving defense, intelligence, and federal civilian agencies. Our work powers mission-critical outcomes, strengthens technology partnerships, and creates meaningful opportunities for our people. We are defined by a commitment to excellence in delivery, a culture of innovation, and an environment where talent can thrive and grow. Meet the challenge. Make a difference with Everforth ECS! ECS Federal LLC is an equal opportunity employer and does not discriminate or allow discrimination on the basis any characteristic protected by law. All qualified applicants will receive consideration for employment without regard to disability, status as a protected veteran or any other status protected by applicable federal, state, or local jurisdiction law. #J-18808-Ljbffr