Senior Cybersecurity Specialist

About this role

Great Hill Solutions, LLC is part of the Seneca Nation Group (SNG) portfolio of companies . SNG is Seneca Holdings' federal government contracting business that meets mission-critical needs of federal civilian, defense, and intelligence community customers. Our portfolio comprises multiple subsidiaries that participate in the Small Business Administration 8(a) program. To learn more about SNG, visit the website and follow us on LinkedIn .

Our team of talented individuals is what makes us successful. To support our team, we provide a balanced mix of benefits and programs. Your total rewards package includes competitive pay, benefits, and perks, flexible work-life balance, professional development opportunities, and performance and recognition programs. We offer a comprehensive benefits package that includes medical, dental, vision, life, and disability, voluntary benefit programs (critical illness, hospital, and accident), health savings and flexible spending accounts, and retirement 401K plan. One of our fundamental principles is to offer competitive health and welfare benefits to our team members, providing coverage and care for you and your family. Full-time employees working at least 30 hours a week on a regular basis are eligible to participate in our benefits and paid leave programs. We pride ourselves on our collaborative work environment and culture, which embraces our mission of providing financial and non-financial benefits back to the members of the Seneca Nation.

Great Hill is seeking a Senior Cybersecurity Specialist who will provide cybersecurity operations and Risk Management Framework (RMF) support for SOCRATES systems and enterprise IT initiatives in Tampa, FL. The position will support security compliance, system security assessments, vulnerability management, continuous monitoring, and cybersecurity documentation throughout the system lifecycle.

Roles and Responsibilities include, but are not limited to :

• Provide senior-level cybersecurity and Risk Management Framework (RMF) support for SOCRATES and C4IAS enterprise IT initiatives.

• Develop, maintain, and manage RMF and Assessment & Authorization (A&A) documentation, including System Security Plans (SSPs), Security Assessment Reports (SARs), Security Authorization Packages, and Plans of Action and Milestones (POA&Ms).

• Support IATT and ATO activities and coordinate with Security Control Assessors (SCAs), Authorizing Officials (AOs), ISSOs, and ISSMs.

• Conduct security assessments, vulnerability scans, penetration testing, and compliance reviews to identify and address cybersecurity vulnerabilities.

• Perform ACAS scans and support remediation of IAVAs, IAVBs, CVEs, STIG findings, and other security vulnerabilities.

• Develop and maintain technical POA&Ms and remediation plans, prioritizing findings based on risk and severity.

• Support continuous monitoring and implement cybersecurity countermeasures throughout the system lifecycle.

• Ensure cybersecurity requirements are incorporated into acquisition, systems engineering, testing, integration, and implementation activities.

• Provide cybersecurity support for the testing, integration, installation, and deployment of hardware and software.

• Maintain A&A and cybersecurity documentation using eMASS, XACTA, or equivalent RMF management systems.

• Support classified security activities, including document control, classified material inventories, access requests, and security-related databases.

• Ensure compliance with applicable DoW, Intelligence Community, NIST, DISA, USCYBERCOM, and USSOCOM cybersecurity policies and requirements.

Basic Qualifications:

• Bachelor’s degree in Cybersecurity, Information Technology, Computer Science, or a related field, or equivalent relevant experience.

• Active Top Secret clearance.

• 5+ years of experience supporting cybersecurity, Information Assurance, RMF, or related activities.

• Experience developing and maintaining RMF/A&A documentation and security authorization packages.

• Experience with vulnerability management, security assessments, ACAS, STIGs, and POA&Ms.

• Working knowledge of NIST 800-53, NIST 800-37, DoW RMF, and applicable DoW cybersecurity requirements.

• Experience using eMASS, XACTA, or similar RMF management tools.

• DoW 8570/8140-compliant cybersecurity certification appropriate to the position.

• Ability to work independently and communicate effectively with government and contractor stakeholders.

Desired Skills:

• Experience supporting USSOCOM, SOCRATES, C4IAS, or other DoW/Intelligence Community programs.

• Experience working in classified environments and supporting systems across multiple security enclaves.

• Experience supporting IATT and ATO processes from initiation through authorization.

• Experience with DISA STIGs/SRGs, ACAS, penetration testing, and continuous monitoring.

• Experience addressing USCYBERCOM IAVAs/IAVBs and cybersecurity tasking.

• Experience with privileged user/system administrator responsibilities.

• Experience with Supply Chain Risk Management (SCRM) and related cybersecurity requirements.

• CISSP or other advanced cybersecurity certification.

• Experience coordinating with SCAs, AOs, ISSOs, ISSMs, and other government cybersecurity stakeholders.

Equal Opportunity Statement: Seneca Holdings provides equal employment opportunities to all employees and applicants without regard to race, color, religion, sex/gender, sexual orientation, national origin, age, disability, marital status, genetic information and/or predisposing genetic characteristics, victim of domestic violence status, veteran status, or other protected class status. This policy applies to all terms and conditions of employment, including, but not limited to, hiring, placement, promotion, termination, layoff, recall, transfer, leave of absence, compensation and training. The Company also prohibits retaliation against any employee who exercises his or her rights under applicable anti

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