Cyber Security Administrator

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

• Compensation: USD 89,696 - USD 186,293 - yearly

Company Description

Founded in 1989, SOSi is among the largest private, founder-owned technology and services integrators in the defense and government services industry. We deliver tailored solutions, tested leadership, and trusted results to enable national security missions worldwide.

Job Description

**This position is contingent upon contract award**

SOSi is seeking an Cyber Security Administrator to support mission requirements for a structured approach to further develop, integrate, and sustain a scalable, federated data ecosystem that enhances interoperability, governance, and mission-driven analytics for a DoD customer. The primary objective of the program is to bridge the operational gaps between DoD, IC, interagency, and non-traditional international partners to enable real-time information sharing, dynamic data integration, and mission-tailored analytical capabilities.

• Ensure compliance with DoD cybersecurity mandates, including NIST 800-53 Rev. 5, FedRAMP, Risk Management Framework (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, including System Security Plans (SSPs), Security Assessment Reports (SARs), and Plans of Action & Milestones (POA&M), ensuring continuous compliance and audit readiness.
• Lead and track the progress of Authority to Operate (ATO) processes, ensuring all security controls and risk assessments are documented and submitted for approval.
• Submit the Cybersecurity Compliance & Risk Assessment Report, summarizing vulnerability findings, risk mitigation strategies, and security control implementation status.

Qualifications

• Active TS/SCI clearance.
• Bachelor’s degree in Cybersecurity, Information Assurance, or a related field, or;
  • five (5) years of equivalent experience in cybersecurity operations
• Managing security configurations, conducting penetration testing, and implementing SIEM solutions (e.g., Microsoft Sentinel, AWS Security Hub).
• Implementing and enforcing security controls for cloud infrastructure, ensuring compliance with DoD security frameworks.
• Performing risk assessments, continuous security monitoring, and developing mitigation strategies in cloud and hybrid environments.
• Administering RBAC and enforcing least-privilege access policies for mission-critical applications.
• Managing the ATO lifecycle, including the preparation of System Security Plans (SSP), Security Assessment Reports (SAR), and Plans of Action & Milestones (POA&M).
• Coordinating with DoD cybersecurity officials to achieve and sustain ATOs for cloud-based and on-premises environments.

Additional Information

Working Conditions:

• Normal office conditions.

Working at SOSi:

All interested individuals will receive consideration and will not be discriminated against for any reason.