IA Security Administrator – Security Control Assessor

🕒 July 17, 2025

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3500 Square

WebsiteLinkedInAll Job Openings

11 - 50 employees

Founded 2023

🔒 Cybersecurity

🤝 B2B

🏛️ Government

Cybersecurity • B2B • Government

3500 Square is an SBA-certified, Service-Disabled Veteran-Owned Small Business (SDVOSB) founded by a U. S. Army veteran that provides expert IT services to streamline operations, modernize technology, and reduce costs for its clients. Backed by over 25 years of IT experience, the company specializes in IT managed services, software development, cloud management, network design and implementation, and cybersecurity, and also offers bilingual customer support and IT consulting. As a small, diverse firm (8(a), HubZone, MBE, SDB), 3500 Square emphasizes personalized, tailored solutions for business and government customers to meet specific objectives and compliance needs.

📋 Description

• Conduct Security Control Assessments (SCAs) in accordance with DoD RMF processes and NIST SP 800-53 guidelines. • Develop, review, and maintain security documentation, including Security Assessment Plans (SAPs), Security Assessment Reports (SARs), and supporting artifacts. • Analyze and evaluate the effectiveness of security control implementations across enterprise IT systems. • Collaborate with Information System Security Managers (ISSMs), Information System Security Officers (ISSOs), and system owners to identify, document, and remediate assessment findings. • Support the development and management of Plans of Action and Milestones (POA&Ms) for remediation activities. • Provide subject matter expertise on security compliance and contribute to continuous improvement of RMF processes.

🎯 Requirements

• Knowledge of NIST SP 800-53 controls, DoDI 8510.01 requirements, and eMASS workflows. • Experience performing cybersecurity compliance assessments, audits, or control validations in enterprise environments. • Ability to produce clear, concise security documentation and articulate technical findings to various stakeholders. • Familiarity with the RMF lifecycle and cybersecurity compliance standards. • Strong problem-solving skills and the ability to work collaboratively across teams. • Ability to obtain and maintain a Public Trust (Tier 3/NACLC) clearance. • Bachelor’s degree in IT / Cybersecurity / Data Science / IS / CS (ABET or CAE accredited), OR CAP, CISSP-ISSAP, or GSLC.

🏖️ Benefits

• Equal Employment Opportunity and E-Verify Statement • Reasonable accommodations available for applicants with disabilities