Information System Security Engineer III

ATG

$100K — $130K *
Aerospace & Defense
5 - 7 years of experience
Job Overview by Ladders

Qualifications

  • Active Secret Clearance
  • Bachelor's degree in computer science, IT, or equivalent STEM field
  • Minimum 7 years in information security operational requirements
  • Strong experience with RMF and A&A processes
  • IAT-III Certification (e.g., CASP+CE, CISSP)
  • Familiarity with NIST SP 800-37 Revision 2

Responsibilities

  • Lead RMF lifecycle activities and monitoring efforts
  • Capture and refine cybersecurity operational requirements
  • Ensure compliance with security requirements during system development
  • Oversee configuration changes and vulnerability management
  • Maintain cybersecurity documentation in eMASS
  • Support remediation planning and risk reduction
  • Coordinate with stakeholders to enhance security posture
  • Provide mentorship to junior cybersecurity personnel

Benefits

  • Performance bonuses and annual salary reviews
  • Health, dental, and vision insurance
  • Short-Term and Long-Term Disability, Life Insurance
  • 401(k) plan with company match
  • Opportunities for professional growth
  • Collaborative and inclusive work environment
Full Job Description
Employment Type: Full-Time

Shift: Day

Job Summary
We are seeking an Information System Security Engineer III (ISSE III) to support a Navy cybersecurity program. The selected candidate will provide advanced cybersecurity engineering support, capture and refine security requirements, and ensure those requirements are addressed through purposeful development, system configuration, vulnerability management, and implementation of security controls across multiple authorization packages. This position is contingent upon award of the contract.
Key Responsibilities
  • Lead RMF lifecycle activities and support authorization and continuous monitoring efforts across multiple systems.
  • Capture and refine information security operational and security requirements.
  • Ensure security requirements are addressed through purposeful development, configuration, and implementation of security controls.
  • Lead configuration changes, software and hardware update activities, patching support, vulnerability scanning, and secure system configuration efforts.
  • Develop, review, and maintain cybersecurity documentation and authorization artifacts within eMASS.
  • Support remediation planning, POA&M tracking, and risk reduction activities.
  • Coordinate with government stakeholders, ISSOs, system administrators, and engineering teams to maintain system compliance and security posture.
  • Provide technical guidance and mentorship to junior cybersecurity personnel as needed.

Qualifications
Required:
  • Active Secret Clearance.
  • Bachelor's degree in computer science, information technology, or an equivalent STEM degree from an accredited college or university.
  • Minimum of seven (7) years of professional experience capturing and refining information security operational and security requirements and ensuring those requirements are properly addressed through purposeful development, configuration, and implementing security controls, configuration changes, software/hardware updates and patches, vulnerability scanning, and securing configurations.
  • Strong experience with RMF, A&A processes, eMASS, and vulnerability management activities.
  • IAT-III Certification including any of the following: CASP+CE, CCNP Security, CISA, CISSP (or Associate) GCED, GCIH, CCSP
  • Familiarity with NIST SP 800-37 Revision 2 (Risk Management Framework)
Desired:
  • Experience supporting Department of the Navy or NAVSEA environments.
  • Strong background in system hardening, compliance validation, and cybersecurity engineering.
  • Excellent analytical, documentation, and communication skills.
  • ISC 2 Certified in Governance, Risk, and Compliance (CGRC) or equivalent

Physical and Environmental Conditions
Normal office environment. Requires sitting, standing, near acuity, speaking with colleagues and customers, listening, sight, and use of hands/fingers.
This position description is not intended as, nor should it be construed as, exhaustive of all responsibilities, skills, efforts, or working conditions associated with this job. This and all positions are eligible for organization-wide transfer. Management reserves the right to assign or reassign duties and responsibilities at any time.
Additional Benefits
  • Performance bonuses and annual salary reviews
  • Health, dental, and vision insurance
  • Short-Term Disability, Long-Term Disability, and Life Insurance
  • 401(k) plan with company match
  • Opportunities for professional growth and development
  • A collaborative and inclusive work environment

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