ManTech Information System Security Officer in El Segundo, California

Become an integral part of a diverse team that leads the world in Mission, Cyber, and Intelligence Solutions. At ManTech International Corporation, you will help protect our national security while working on innovative projects that offer opportunities for advancement.

The Information Systems Security Officer (ISSO) performs a variety of complex tasks associated with information security. Responsible for ensuring the appropriate operational security posture is maintained for an information system and as such, works in close collaboration with the ISSM and ISO. The ISSO shall have the detailed knowledge and expertise required to manage the security aspects of an information system and, in many organizations, is assigned responsibility for the day-to-day security operations of a system. Responsibilities also include physical and environmental protection, auditing, incident handling, and chairs the local Configuration Control Board (CCB). In close coordination with the ISSM and ISO, the ISSO plays an active role in monitoring a system and its environment of operation to include developing and updating the SSP, managing and controlling changes to the system, and assessing the security impact of those changes. Expert knowledge of ICD503 processes and procedures. Previous, documented ISSO experience required. Capable of independent program supervision. Specific include but are not limited to:

•Experience in performing Risk Managed Framework (RMF) package building, performs review and submittal to the System Certification Authority (SCA) under JSIG regulatory guidance.

•Must Review, develop, and implement security plans for existing and new computer assets.

•Coordinate and perform information system security inspections, tests, and reviews.

•Create, update and maintain procedures for secure operation of IT assets.

•Conduct evaluation and analysis of software intended for usage on secure IT assets.

•Conduct auditing of secure IT assets; Investigate and report on classified messaging incidents.

•Communicate regularly with customer to obtain status of requests and facilitate completion of requests.

•Ensure security policies, standards, and procedures are enforced.

•Responsible for classification management, system classified document control, and classified media control; Clearing, purging, declassifying, and releasing system memory, media, and output.

•Evaluate information security systems and working parameters for hardware/software compatibility.


•Specific OS and system experience required: Windows Server 2008 & 2003, Windows 7, Windows Office 2010, 2007 products (e.g., Word, PowerPoint, Excel, Project, Access, etc.); UNIX Administration - Digital UNIX, AdvFS (e.g., adding users, UNIX groups, permissions, etc.)

•Knowledgeable in the technical areas of computer networking, computer hardware, and secure LAN support. Able to articulate information system security related issues to program management, utilizing proven communication skills, both oral and written. Maintains certifications and skill set required under the JSIG.

•Understanding and experience implementing guidance complaint with DoDM 5205.07 Vols 1-4 and DoDM 5105.21 Vols 1-3.

•At a minimum must meet DoD 8570.01-M IAM Level I certification requirement

Security Clearance Requirement: Must possess an active TS/SCI based upon a SSBI within the last five years to be considered for this position.


Requires Bachelor s degree or equivalent and five to seven of related experience and ability to obtain a security clearance.


Equivalent Experience/Education, Bachelor's Degree

Years of Experience

11-13 years w/High School Diploma, 05-07 years w/Bachelors Degree, 02-04 years w/Masters Degree

Position Type





ManTech International Corporation is comprised of approximately 7,300 talented employees who use advanced technology to help government and industry meet some of their greatest challenges around the world. We adhere to the simple, no-nonsense values on which ManTech was founded more than four decades ago, aligning squarely with the mission objectives of our customers. As our customer base continues to expand and diversify, we continue to diversify our workforce and solutions. Nearly half our employees have a military background, and approximately 70 percent hold a government security clearance. As a leading provider of innovative technology services and solutions for the nation's defense, security, health, space, and intelligence communities; we hold nearly 1,100 active contracts with more than 50 different government agencies.

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 Waretime 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.

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