Cloud Security Administrator

We are seeking a Cloud Security Administrator with senior-level RHEL administration experience to support the U.S. Army C5ISR Cyber Security Service Provider (CSSP). In this role, you will help secure and sustain AWS cloud environments by managing security controls, identifying vulnerabilities, coordinating remediation, and supporting continuous compliance monitoring. You will collaborate with cloud engineers, cybersecurity specialists, and mission partners to strengthen cloud security, streamline remediation, and maintain operational readiness across enterprise environments. Primary Responsibilities: Administer, monitor, and maintain cloud security controls across AWS 2.0 and CSSP subscriber environments. Diagnose and resolve Linux operating-system, service, storage, networking, authentication, and application issues. Identify, assess, track, and coordinate remediation of cloud vulnerabilities, misconfigurations, and compliance findings. Manage AWS security capabilities, including IAM, CloudTrail, CloudWatch, Security Hub, GuardDuty, KMS, and VPC security controls. Support Risk Management Framework (RMF), Authorization to Operate (ATO), and continuous monitoring through security assessments, control validation, and compliance documentation. Conduct security configuration reviews across AWS resources, Linux and Windows systems, and supporting cloud infrastructure. Support onboarding of CSSP subscribers into centralized logging, vulnerability management, Elastic Agent Defend, and other security services. Coordinate security patching, access reviews, change management, incident response, and ongoing security operations. Develop and maintain security procedures, operational runbooks, compliance evidence, and technical documentation. Basic Qualifications: Bachelor's degree with 8+ years of relevant experience or master's degree with 4+ years of relevant experience. Hands-on experience administering security controls in AWS or other enterprise cloud environments. Working knowledge of AWS security services, including IAM, CloudTrail, CloudWatch, Security Hub, GuardDuty, Systems Manager, KMS, and VPC security controls. Experience with vulnerability management, security assessments, compliance monitoring, patch management, and remediation tracking. Demonstrated hands-on experience administering Red Hat Enterprise Linux (RHEL) systems in production or enterprise environments. Familiarity with Linux and Windows security administration, including host-level and cloud security findings. Experience using Ansible to automate routine system-administration tasks. Understanding of DoD cybersecurity requirements, RMF/ATO, NIST SP 800-53, and DISA STIG/SRG standards. Experience with SIEM, endpoint security, enterprise logging, security monitoring, and ticketing platforms. Strong analytical, troubleshooting, documentation, and communication skills. Ability to meet applicable DoD 8140 qualification requirements. U.S. Citizenship with an active Secret security clearance required. Preferred Qualifications: Experience securing DoD cloud environments, including AWS GovCloud. Hands-on experience with Tenable.sc/ACAS, Elastic Security, Elastic Agent Defend, AWS Security Hub, or GuardDuty. Experience supporting RMF authorization packages, ATO assessments, and continuous-monitoring compliance activities. DoD 8140-aligned certification, such as CISSP. AWS cloud or security certification. Pay Range: $107,900.00 - $195,050.00 Job Data by YubHub .