• Type: Contract
  • Job #2699

Information Systems Security Engineer (ISSE) – Agile
Chantilly, VA or Springfield, VA
*Clearance: *Active TS/SCI w/ Polygraph needed to apply *
Company Overview:
Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government.  Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission.  Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation’s toughest and most secure problems.  If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don’t look any further than Cornerstone Defense.


  • Serve as part of an Agile team responsible for ensuring all products adhere to cybersecurity best practices in the migration of any project, program, system, entity, instance, Information Technology (IT) asset, or data that exists in the Sponsor’s environment to a multi-cloud environment.
  • Work iteratively with the ICAM / ZTA team to implement architecture and Body of Evidence, and streamline authority to operate (ATO).
  • Develop ways to integrate security best practices into a scrum process. 
  • Implement patterns of security controls throughout the solution delivery lifecycle. 
  • Guide and advise the scrum master and team members on security best practices.

Required Skills:

  • 9+ years of experience in an Agile environment. 
  • 9+ years in DevSecOps.
  • Experience with product or project development. 
  • Understanding of Model-Based Systems Engineering (MBSE) models, as well as in-depth knowledge of traditional security management principles and practices 
  • Prior experience working on a scrum team.

Desired Skills:

  • Experience with one of more of the following CSPs: AWS, Azure, GCP, IBM Cloud, and OCI.
  • Experience working in a cloud and/or hybrid environment.
  • Experience utilizing NIST Security and Cloud Reference Documents and/or ICD and ISO Reference Documents 
  • Certification(s): 
    • Cloud Security (AWS, Azure, GCP, IBM, or OCI) 
    • Certified Information Systems Security Professional (CISSP) 
    • Certified Information Security Manager (CISM) 
    • Security+ 
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