Leidos · 2 hours ago
Information System Security Engineer
Orlando, FL
Full-time
Onsite
Senior Level, Lead/Staff
8+ years expLeidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. They are seeking an experienced Information System Security Engineer to work in their Orlando, FL office, focusing on the security of mission-critical defense networks and ensuring compliance with cybersecurity standards.
ComputerGovernmentInformation ServicesInformation TechnologyNational SecuritySoftware
No H1B
Security Clearance RequiredU.S. Citizen Only
Responsibilities
The ISSE will be responsible for monitoring TEMPEST certifications and the development of an RMF Assess and Authorize (A&A) package, including detailing controls, a system scanning plan, POA&M maintenance, and a Body of Evidence validating control implementation
High Level tasking for this team will include the following:
Plan and detail the security of a complex mission-critical defense network per the DoD RMF
Plan, document, and achieve system Interim Authorization to Test (IATT), Interim Authorization to Operate (IATO), Authorization to Operate (ATO), Authorization to Connect (ATC), Interconnection Security Agreement (ISA) and other approvals as required by the Government Authorizing Official
Perform and/or review security assessments of computing environments to identify points of vulnerability, non- compliance with established Cybersecurity standards and regulations and recommend mitigation strategies
Validate and verify system security requirements definitions and analysis
Assist architects and systems developers in the identification and implementation of appropriate information security functionality to ensure uniform application of security policy and solutions
Assess and develop mitigations for Security Compartmented Information (SCI) system security threats/risks throughout the program life cycle
Contribute to the security planning, assessment, risk analysis, risk management, certification and awareness activities for SCI systems and Classified networking operations
Qualification
Required
Bachelors Degree and 8 to 12 years of relative experience
Active and current Secret clearance with the ability to obtain and maintain TS/SCI clearance
Achievement of any DoD 8140 or DoD 8570 baseline certification within 6 months of start of work
Experience with Air Force Intelligence Community NIST Risk Management Framework
Experience with Intelligence Community Directive 503
Experience with Cross-domain or segmented architectures
Experience with NIST SP 800-53 control development and documentation
Experience operating within Sensitive Compartmented Information Facility (SCIF) and Classified networks
Preferred
Experience working with DoD security Assessment and Authorization
Experience with eMASS, Jira, and Confluence
Experience developing and maintaining authorization Body of Evidence
Experience with Tenable Nessus, Security Onion SIEM solution
Understanding of TEMPEST requirements and assessments
Benefits
Health and Wellness programs
Income Protection
Paid Leave
Retirement
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
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2025-12-16
2025-12-16
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