Information System Security Engineer III

Team: Meridian

Location: Jessup, MD

Commitment: Full-time

Workplace Type: onsite

Your Mission:

Join ClearPoint as an Information System Security Engineer III, where you will lead the security engineering and accreditation work behind MERIDIAN, our AI-Enabled Secure Space Operations & Management Platform. You will work closely with internal and external stakeholders to build security into the system throughout its lifecycle, reviewing architecture, testing the system as it's built, and shaping controls alongside engineers concurrently with development and implementation.

You will own the RMF package for MERIDIAN's implementation, from SSP and SAR development through POA&M management and continuous monitoring, while staying technically engaged with the platform as it evolves.

You Will Excel in This Role If You Are:

Experienced leading RMF/ATO efforts for classified DoD or IC systems
Comfortable reviewing and shaping secure system architecture alongside engineers, not just documenting it after the fact
Skilled in vulnerability assessment and security testing of live systems
Familiar with NIST SP 800-53 and DoD RMF processes at an implementation level
Capable of translating security findings into concrete, actionable remediation guidance
Comfortable balancing compliance documentation with ongoing hands-on technical engagement
Experienced mentoring less experienced security staff

A Day in the Life:

Develop and maintain SSP, SAR, and POA&M documentation for RMF accreditation
Review system architecture and provide security guidance to engineers during design and development
Conduct vulnerability scans and security assessments of the system as it's built
Identify security weaknesses and recommend system-level remediation
Implement and manage security controls, including identity/RBAC, audit logging, and encryption
Track and drive remediation of findings identified during security assessment
Mentor junior security staff and provide technical guidance

What We Are Expecting From You:

Active TS/SCI with Polygraph clearance; U.S. citizenship
Bachelor's degree in Computer Science, Software Engineering, or related field (4 years of experience may substitute), plus 8 years of experience in information systems
5–8 years of experience as an ISSE or Cybersecurity Engineer
Proficiency with networking, firewalls, and security monitoring tools
Knowledge of operating systems, system security design, risk analysis, and security policies
Experience with NIST Risk Management Framework (RMF) or DoD 8500 series compliance
Experience reviewing and shaping secure system architecture alongside development teams
Experience conducting vulnerability assessments and security testing

Nice to Have:

Experience embedding security into CI/CD pipelines and DevSecOps workflows
Familiarity with container and cloud security tooling
Experience with automated security scanning (SAST/DAST) as part of the development lifecycle
Experience with cryptography, encryption technologies, and application security
Experience with penetration testing
Experience with physical security or facility accreditation practices, such as ICD 705 or similar frameworks