Criterion Systems, Inc.

Information Systems Security Engineer (ISSE)

Job Locations US-VA-Herndon
Information Technology
Regular Full-Time


At Criterion Systems, we developed a different kind of business—a company whose real value is a reputation for excellence built upon the collective skills, talents, perspectives, and backgrounds of its people. By accepting a position with Criterion Systems, you will join a group of professionals with a collaborative mindset where we share ideas and foster professional development to accomplish our goals. In addition to our great culture, we also offer competitive compensation and benefit packages, company-sponsored team building events, and advancement opportunities. To find out more about how Criterion can help you take your career to the next level please visit our website:


Criterion Systems is seeking a mission-focused Expert Information Systems Security Engineer to support and contribute to our government customer’s success in Herndon, VA. The individual in this position must be a motivated team player that strives for professional and technical excellence in providing expert-level security support/guidance to engineering and technical IT related activities within the organization.

Primary Responsibilities include, but are not limited to: 

  • Provide day-to-day support and oversight of all Information Assurance, Certification & Accreditation and Assessment & Authorization activities.
  • Managing the processing of all organizational efforts through the risk management cycle, this includes closely coordinating and tracking risks, accreditation status, and reporting status across project teams.
  • Generate security plans as required and be the security advocate for all system/architecture changes.
  • Assemble and submit C&A packages to Principal Accreditation Authority/ Designated Accreditation Authority.
  • Coordinate C&A actions and system testing with appropriate security personnel.
  • Maintain a document repository where C&A project documentation is stored.


Minimum Qualifications and Skills: 

  • Must have a bachelors degree or equivalent work experience.
  • Must have 11 or more years of IT security and information assurance.
  • Must have an active TS/SCI with Poly Clearance.
  • Must be willing to travel CONUS up to 10%.
  • Experience in an ISSO /ISSE / ISSM role.
  • Working knowledge of Intelligence Community Information Assurance policies and regulations and how they relate to the certification and accreditation process.
  • Experience authoring and maintaining systems security documentation including documentation of security mitigations and successful completion of DCID 6/3 or ICD503 accreditation process.
  • Demonstrated experience navigating the Sponsor's security and accreditation process to include certification and accreditation of an IT system to Authority to Operate (ATO).
  • Candidate shall possess knowledge and experience in generating appropriate security documentation to receive proper accreditation from Directorate security personnel and correcting security shortfalls as they are identified through Agency sponsored reviews.
  • Experience using XACTA Tool.
  • Strong technical skills and analytic ability.
  • Good communications skills, written and oral.


Preferred but not Required:

  • PMP Certification.
  • Knowledge of Customer PMF process.
  • Knowledge of FISMA, DCID 6/3, ICD 503 Standards.
  • Knowledge of IT development lifecycle.
  • Knowledge of Customer organization and processes specific to security requirements for IT systems and accreditation/certification.

Criterion Systems, Inc. and its subsidiaries are committed to equal employment opportunity and non-discrimination at all levels of our organization. We believe in treating all applicants and employees fairly and make employment decisions without regard to any individual’s protected status: race, ethnicity, color, national origin, ancestry, religion, creed, sex/gender, gender identity/gender expression, sexual orientation, physical and mental disability, marital/parental status, pregnancy (including childbirth, lactation, and related medical conditions), age, genetic information (including characteristics and testing), military and veteran status, or any other characteristic protected by law. For our complete EEO/AA and Pay Transparency statement, please visit



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