Marcedes Spence

About Marcedes Spence

As an Information System Security Officer (ISSO) with SERCO-NA, I drive cybersecurity strategy, compliance, and risk management for sensitive U.S. government systems. I ensure alignment with federal frameworks (including NIST SP 800-53), design security protocols, and lead assessments that strengthen operational resilience. My work includes managing GRC documentation, overseeing access controls for cleared environments, and investigating system incidents in accordance with regulatory standards. I also support Insider Threat Protection Teams, conducting threat analyses, coordinating incident response, and leveraging SIEM tools to detect anomalous behaviors. I’m committed to safeguarding mission-critical systems and enhancing the security posture across high-impact government programs.

Experience

1. Isso (Information Systems Security Officer)

   Serco

   Nov 2025 — Present

   Provided backup support as an alternative Information Systems Security Manager (ISSM), assuming responsibilities as required to maintain continuity of security oversight and compliance- Designed and implemented a comprehensive System Security Plan (SSP), ensuring compliance with industry standards and regulatory requirements- Maintained keen documentation of security activities, preparing security plans, and managing Plans of Action and Milestones (POA & M) to track and address security vulnerabilities- Conducted system audits, tracked corrective actions to facilitate compliance, and performed daily log analysis across all system assets to identify and respond to potential threats- Led controls, security, and assessments, overseeing the implementation of security measures and adherence to Risk Management Framework (RMF) principles.

Education

• Thomas Edison State University

  Bachelor's degree, Criminology

• Bottega University

  Full Stack Development Certificate, Computer Science

• Intellectual Point

  Cybersecurity Expert Pathway, Cybersecurity

• Thomas Edison State University

  Master of Science - MS, Cybersecurity

• Capitol Technology University

  Doctor of Philosophy - PhD, Space Cybersecurity