Information System Security Officer (ISSO)

205U - 1901 S Bell St, Arlington, VA

Secure our Nation, Ignite your Future

Become an integral part of a diverse team while working at an Industry Leading Organization, where our employees come first. At ManTech International Corporation, you’ll help protect our national security while working on innovative projects that offer opportunities for advancement.

ManTech is seeking a motivated, career and customer-oriented Information System Security Officer (ISSO) to join our team in Washington, DC.!


  • Provide support for government programs, legacy systems, future systems to be acquired for information assurance
  • Support the customer in achieving the approval for a program for the Authority to Operate (ATO)
  • Implement and manage NIST 800-53 Rev. 4 Security Controls
  • Develop, maintain and manage Security Authorization and Assessment packages that include System Security Plans (SSP), Contingency Plans (CP), and other relevant security documentation for existing and new systems
  • Align systems activities to the NIST Cyber Security Framework (CSF)
  • Identify and support system Interconnection Security requirements
  • Provide support for proposing, coordinating, implementing, and enforcing information systems security policies, standards, and methodologies
  • Support the development and enhancement of systems security policies, standards, and procedures and track implementation and compliance
  • Support evaluating security solutions of legacy systems and future systems being developed to ensure they meet security requirements for processing classified information
  • Support vulnerability/risk assessment analysis to support certification and accreditation
  • Prepare and review documentation to include Systems Security Plans (SSPs), Risk Assessment Reports, and Certification and Accreditation (C&A) packages
  • Support government security authorization activities in compliance with the NSA/CSS Information System Certification and Accreditation Process (NISCAP)
  • Review system security to accommodate changes to policy or technology
  • Evaluate IT threats and vulnerabilities to determine whether additional safeguards are needed
  • Advise the government concerning the impact levels for Confidentiality, Integrity, and Availability for the information on a system
  • Conduct certification tests that include verification that the features and assurances required for each protection level are in place


  • Current CISSP certification is required.
  • Requires a detail-oriented self-starter experienced in supporting senior Government leaders and other technical/business professionals.
  • Knowledge of current security tools, hardware/software security implementation, communication protocols or encryption techniques/tools is required.
  • Must be familiar with NIST and CMS security documentation, including but not limited to NIST 800-53, NIST 800-63, CMS Acceptable Risk Safeguards (ARS), CMS Risk Management Handbook (RMH) and CMS Federal Information Security Management Act (FISMA) Controls Tracking System (CFACTS).
  • Superior customer interface skills at senior levels of management with excellent oral and written communication skills are critical.
  • 11 years of experience or a Bachelor's degree and 4 years of experience is required


  • A DHS public Trust is required to start
  • A current TS/SCI clearance is required


  • Current CISSP


  • 40 (Full Time)


  • Must be able to remain in a stationary position 50%

For all positions requiring access to technology/software source code that is subject to export control laws, employment with the company is contingent on either verifying U.S.-person status or obtaining any necessary license. The applicant will be required to answer certain questions for export control purposes, and that information will be reviewed by compliance personnel to ensure compliance with federal law. ManTech may choose not to apply for a license for such individuals whose access to export-controlled technology or software source code may require authorization and may decline to proceed with an applicant on that basis alone.

ManTech International Corporation, as well as its subsidiaries proactively fulfills its role as an equal opportunity employer. We do not discriminate against any employee or applicant for employment because of race, color, sex, religion, age, sexual orientation, gender identity and expression, national origin, marital status, physical or mental disability, status as a Disabled Veteran, Recently Separated Veteran, Active Duty Wartime or Campaign Badge Veteran, Armed Forces Services Medal, or any other characteristic protected by law.

If you require a reasonable accommodation to apply for a position with ManTech through its online applicant system, please contact ManTech's Corporate EEO Department at (703) 218-6000. ManTech is an affirmative action/equal opportunity employer - minorities, females, disabled and protected veterans are urged to apply. ManTech's utilization of any external recruitment or job placement agency is predicated upon its full compliance with our equal opportunity/affirmative action policies. ManTech does not accept resumes from unsolicited recruiting firms. We pay no fees for unsolicited services.

If you are a qualified individual with a disability or a disabled veteran, you have the right to request an accommodation if you are unable or limited in your ability to use or access as a result of your disability. To request an accommodation please click and provide your name and contact information.

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* Salary range is an estimate based on our InfoSec / Cybersecurity Salary Index 💰

Tags: C CISSP Clearance Compliance Encryption FISMA NIST Risk assessment Risk Assessment Report Risk management Security Clearance System Security Plan TS/SCI Vulnerabilities

Perks/benefits: Career development

Region: North America
Country: United States
Job stats:  7  1  0
Category: Leadership Jobs

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