AWS Cloud Security Admin for Defense Ops

Leidos; Adelphi (MD); Hybrid; USD 108,000 - 195,000; Full time

Benefits offered by this job

Hybrid work model

Job summary

Leidos is seeking a Cloud Security Administrator to secure DoD cloud environments in Adelphi, MD, with hybrid onsite requirements. You will administer security controls across AWS 2.0, manage vulnerabilities, and coordinate remediation within CSSP subscriber environments.

You will support RMF/ATO processes, perform configuration reviews on Linux and Windows systems, and maintain compliance documentation. A Secret clearance (TS/SCI for some roles) is required.

Qualifications

• Hands-on experience administering security controls in AWS or other enterprise cloud environments.
• 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.
• Familiarity with Linux and Windows security administration, including host‑level and cloud security findings.
• 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 at start and obtain required CSSP and Computing Environment certifications within 90 days, as applicable to the assigned work role.
• U.S. Citizenship with an active Secret security clearance required at start, with TS/SCI required for the position, subject to program access and eligibility requirements.

Responsibilities

• Administer, monitor, and maintain cloud security controls across AWS 2.0 and CSSP subscriber environments.
• Identify, assess, track, and coordinate remediation of cloud vulnerabilities, misconfigurations, and compliance findings.
• Manage AWS security capabilities (IAM, CloudTrail, CloudWatch, Security Hub, GuardDuty, KMS, VPC).
• Support RMF, ATO, and continuous monitoring through security assessments, control validation, and compliance documentation.
• Conduct security configuration reviews across AWS resources, Linux and Windows systems.
• 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.

Skills

AWS security

Vulnerability management

RMF/ATO

DoD compliance

Cloud security

Incident response

Documentation

DoD 8140 qualifications

Education

Bachelor’s degree

Master’s degree

Tools

AWS IAM

AWS CloudTrail

AWS CloudWatch

AWS Security Hub

GuardDuty

KMS

VPC security controls

Job description

Leidos is seeking a Cloud Security Administrator to secure DoD cloud environments in Adelphi, MD, with hybrid onsite requirements. You will administer security controls across AWS 2.0, manage vulnerabilities, and coordinate remediation within CSSP subscriber environments.

You will support RMF/ATO processes, perform configuration reviews on Linux and Windows systems, and maintain compliance documentation. A Secret clearance (TS/SCI for some roles) is required.