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Job #: TR-662605
Location: Columbia, MD
Category: Info Security
Schedule (FT/PT): Full time
Travel Required: No
Shift: Day
Potential for Telework: No
Clearance Required: Top Secret/SCI with Polygraph
Referral Eligibility: Ineligible
Group: Defense & Intel

Job Description:

Upon receiving the requisite funding, the Leidos Defense and Intelligence Group will have a career opening for a TS/SCI with poly cleared Information Systems Security Engineer (ISSE) III on our Leidos led prime contract in Columbia, MD.

Program Summary

This program is a Leidos sole sourced prime contract responsible for providing Information Assurance (IA) Architecture Analysis and Security Engineering Support for the implementation and fielding of the National Leadership Command Capability in support of Nuclear Command, Control, and Communications (NC3), Continuity of Government (COG), and Senior Leader communications.

Job Summary

Pending funding, the ISSE III will perform in a consultant like role providing technical knowledge, expertise and advice to our customer. They shall perform, or review, technical security assessments of computing environments to identify points of vulnerability, non-compliance with established IA standards and regulations and recommended mitigation strategies.

Primary responsibilities include but are not limited to the following:

Validates and verifies system security requirements definitions and analysis and establishes system security design

Designs, develops, implements and/or integrates IA and security systems and system components including those for networking, computing and enclave environment to include those with multiple enclaves and with differing data protection/classification requirements

Builds IA into systems deployed to operation environments

Assist architects and systems developers in the identification and implementation of appropriate information security functionality to ensure uniform application of Agency security policy and enterprise solutions

Supports the building of security architectures

Enforces the design and implementation of trusted relations among external systems and architecture

Assesses and mitigates system security threats/risk throughout the program life cycle

Contributes to the security planning, assessment, risk analysis, risk management, certification and awareness activities for system and networking operations

Reviews C&A documentation, providing feedback on completeness and compliance of its content

Applies system security engineering expertise in one or more of the following:

System security design process Engineering life cycle

Information domain

Cross domain solutions

COTS and GOTS cryptographyIdentification, authentication and authorization

Systems integration

Risk management

Intrusion detection

Contingency planning

Incident handling

Configuration control

Change management


C&A process

Principles of IA (confidentiality, integrity, non-repudiation, availability, and access control)

Security testing

Support security authorization activities in compliance with DoD Information System Certification and Accreditation Processes and DoD Information Assurance Certification and Accreditation Process (DIACAP) process, the NIST Risk Management Framework (RMF) process, and prescribed DoD business process for security engineering.


Bachelor of Science Degree from an accredited university in Computer Science, Information Assurance, Information Security System Engineering or related field with a minimum of 20 years of experience as an Information Systems Security Engineer (ISSE) on programs and/or contracts

with the customer space. A Masters Degree in Computer Science, Information Assurance, Information Security System Engineering or related field reduces the experience requirement to 18 years.

CISSP-ISSEP DoD approved 8570 baseline certification is a firm requirement

Additionally, the candidate must also possess the following knowledge, skills and abilities:

Expertise in network technology and systems security engineering

Experience in identifying, researching, characterizing, and documenting security weaknesses related to operating systems, software applications, firmware, network hardware components, as well as network architecture design and documented policies and procedures.

Experience developing and documenting system security requirements and conducting requirements gap analysis.

Knowledge of, and practical experience with the NIST Special Publications 800 Series, CNSSI 1253, and DoD 8500.

Experience with network technologies and the ability to demonstrate knowledge of network protocols, communications systems and architectures.

Should have significant hands on experience implementing security and/or network components, i.e. routers, firewalls, IPS, IDS, etc. Ability to work independently within a schedule and with little direction

Strong writing skills.

Confidence and ability to present briefing to senior level DoD officials in both prepared briefings and/or in ad hoc discussions

.TS/SCI with polygraph required

Preferred Qualifications

Experience and understanding of active cyber defense techniques, products and architectures

Experience or knowledge of cross domain device implementation Experience with virtual desktop environments

Experience or knowledge of the Nuclear Command & Control (NC2) community

Working knowledge of MS Visio to include development of detailed network diagrams

External Referral Bonus:

Potential for Telework:

Clearance Level Required:
Top Secret/SCI with Polygraph


Scheduled Weekly Hours:


Requisition Category:

Job Family:
Info Security


Defense & Intel
Leidos is a Fortune 500® information technology, engineering, and science solutions and services leader working to solve the world’s toughest challenges in the defense, intelligence, homeland security, civil, and health markets. The company’s 31,000 employees support vital missions for government and commercial customers. Headquartered in Reston, Virginia, Leidos reported annual revenues of approximately $10.17 billion for the fiscal year ended December 29, 2017. (NYSE: LDOS) All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or veteran status.

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