Cyber Security Engineer (Jr-Sr)

Cyber Security Engineer (Jr-Sr) aqua IT St. Louis, MO Job Details Full-time 1 day ago Qualifications Security Authorization Security engineering Windows Information security compliance Incident response Patch management NIST standards DoD 8570 Vulnerability scanning Vulnerability management IAT RMF System security Linux administration

Full Job Description Overview:

We have several openings at multiple levels (Jr-Sr). This role focuses on cybersecurity engineering, risk management, and compliance across cloud and on-prem systems, supporting system authorization, vulnerability management, and secure operations in classified environments. Responsibilities Applying RMF processes to support system Assessment & Authorization (A&A), including control selection, implementation, assessment, and continuous monitoring Developing, reviewing, and maintaining security documentation such as SSPs, POA&Ms, SARs, and ATO artifacts in tools such as XACTA or eMASS Conducting vulnerability assessments and compliance scans (e.g., ACAS) and tracking remediation of findings and IAVM requirements Implementing and validating security controls aligned with

NIST 800-53, CNSSI

1253, and related DoD guidance Supporting system hardening, patching, and configuration management in compliance with STIGs for Linux, Windows, and network devices Monitoring systems for security events and supporting incident response and risk mitigation activities Assessing security impacts of system changes and supporting configuration control boards (CCBs) Collaborating with system engineers, administrators, and DevSecOps teams to integrate security throughout the system lifecycle Providing cybersecurity risk input to program leadership, Authorizing Officials (AOs), and stakeholders

Requirements:

US citizenship with Active or Current TS/SCI clearance Bachelor's degree with 5+ years of experience (or equivalent experience) DoD 8570 IAT Level II or higher certification (e.g., Security+, CySA+, CISSP) Experience with RMF, A\&A, POA\&M, and ATO documentation (XACTA/eMASS) Hands-on vulnerability scanning and compliance tracking (ACAS, IAVM) Experience securing Linux and Windows systems, STIGs, patching, and system hardening Knowledge of NIST 800-series publications and incident response processes Strong analytical, communication, and collaboration skills

Preferred Qualifications:

Scripting or development experience (Python, Java, React) DevSecOps tools and pipeline experience Experience with Linux (Red Hat/CentOS), databases, web apps, or big data platforms Familiarity with Agile environments and tools (Jira, Confluence) Experience with NIST SP 800-171 and System Security Engineering (SSE)