Cyber Security Administrator: DoD ATO & Cloud Security Lead

SOSi; Florida; On-site; USD 90,000 - 186,000; Full time

Job summary

SOSi is seeking a Cyber Security Administrator to support a DoD program, ensuring secure operations across cloud and on‑prem environments and enabling real-time information sharing and mission‑critical analytics.

Candidates should hold TS/SCI clearance, a relevant bachelor’s degree or equivalent cybersecurity experience, and hands-on experience with SIEMs (Microsoft Sentinel, AWS Security Hub), vulnerability management, and ATO lifecycle activities.

Qualifications

• Active TS/SCI clearance.
• Bachelor’s degree in Cybersecurity, Information Assurance, or related field, or five (5) years of equivalent cybersecurity operations experience.
• Experience managing security configurations, conducting penetration testing, and implementing SIEM solutions (e.g., Microsoft Sentinel, AWS Security Hub).
• Experience implementing and enforcing security controls for cloud infrastructure in DoD frameworks.
• Experience performing risk assessments, continuous security monitoring, and developing mitigation strategies in cloud and hybrid environments.
• Experience administering RBAC and enforcing least-privilege access policies for mission-critical applications.
• Experience coordinating ATO lifecycle delivery with DoD cybersecurity officials.

Responsibilities

• Ensure compliance with DoD cybersecurity mandates, including NIST 800-53 Rev. 5, FedRAMP, RMF, and DoD IL-4/IL-5 security policies.
• Implement security monitoring solutions, conduct vulnerability assessments, and enforce zero-trust security principles.
• Maintain system security documentation (SSPs, SARs, POA&Ms) and ensure audit readiness.
• Lead and track Authority to Operate (ATO) processes and document all security controls and risk assessments.
• Submit the Cybersecurity Compliance & Risk Assessment Report with findings and mitigation strategies.

Skills

Penetration testing

Security configurations

RBAC

Risk assessment & monitoring

DoD RMF/NIST 800-53 Rev.5

Education

Bachelor’s degree in Cybersecurity/Information Assurance

5 years equivalent cybersecurity operations experience

Tools

Microsoft Sentinel

AWS Security Hub

Job description

SOSi is seeking a Cyber Security Administrator to support a DoD program, ensuring secure operations across cloud and on‑prem environments and enabling real-time information sharing and mission‑critical analytics.

Candidates should hold TS/SCI clearance, a relevant bachelor’s degree or equivalent cybersecurity experience, and hands-on experience with SIEMs (Microsoft Sentinel, AWS Security Hub), vulnerability management, and ATO lifecycle activities.