Leidos · 23 hours ago
Information Systems Security Engineer
Linthicum, MD
Full-time
Onsite
Mid, Senior Level
$108K/yr - $195K/yr
7+ years expLeidos is currently seeking an Information Systems Security Engineer to support our customer onsite. The role involves performing technical security assessments, designing security systems, and ensuring compliance with established standards.
ComputerGovernmentInformation ServicesInformation TechnologyNational SecuritySoftware
No H1B
Security Clearance RequiredU.S. Citizen Only
Responsibilities
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
Qualification
Required
Bachelor's degree from an accredited university ideally in Computer Science, Information Assurance, Information Security System Engineering or related field with a minimum of 7+ years of experience as an Information Systems Security Engineer (ISSE) or Network Engineer on programs and/or contracts with the customer space. 4 additional years of experience in lieu of Technical Degree will be accepted
CASP+ OR CISSP a firm requirement
Strong writing skills
Confidence and ability to present briefing to senior level DoD officials in both prepared briefings and/or in ad hoc discussions
Should have working knowledge of security/ or network components, i.e. routers, firewalls, IPS, IDS, etc
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
Active TS/SCI with Polygraph
Company
Leidos
Leidos is a Fortune 500® innovation company rapidly addressing the world’s most vexing challenges in national security and health.
10001+ employees
Funding
Current Stage
Public CompanyTotal Funding
unknown2025-02-20Post Ipo Debt
2013-09-17IPO
Leadership Team
James Carlini
Chief Technology Officer
Theodore Tanner
Chief Technology Officer
Recent News
MarketScreener
2025-12-16
2025-12-16
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