Information System & Network Security Engineer

Job Description

Company: Leidos

Location: Palm Bay, US

At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customers’ success. We empower our teams, contribute to our communities, and operate sustainably. Everything we do is built on a commitment to do the right thing for our customers, our people, and our community.

Leidos Undersea Systems

Division (USD) is seeking a proactive and experienced Information System Security Engineer (ISSE) to serve as the subject matter expert for critical IT systems at Stennis Space Center, MS. The primary focus of this position is to design, develop, and implement secure information systems. This role requires a deep understanding of security engineering principles and a proactive approach to risk management throughout the system lifecycle.

The successful candidate will be a self-starter, comfortable with extensive travel, and capable of thriving in dynamic and physically demanding environments. Build cybersecurity into systems deployed to operational environments, ensuring uniform application of security policies and enterprise solutions. Assess and mitigate system security threats and risks throughout the program life cycle, contributing to security planning, assessment, risk analysis, and risk management.

Apply system security engineering expertise in areas such as system security design, life cycle, risk management, and security testing, using industry system security engineering methodologies. Enforce the design and implementation of trusted relations among external systems and architectures and manage changes to systems while assessing security impact. Support security authorization activities in accordance with Government regulations, Department of Defense and National Institute of Standards and Technology (NIST) Risk Management Framework (RMF) standards, and customer-specific information security policies, processes, and procedures.

Identify, track, and manage all configuration changes. Implement and validate system security controls using Security Technical Implementation Guides (STIGs) and the Security Content Automation Protocol (SCAP) to ensure compliance. Conduct field maintenance and system grooming to ensure optimal performance.

Assist with installations and testing as needed. Proficiency with STIGs and SCAP tools for configuration tracking and compliance. Deep understanding of the Navy Risk Management Framework (RMF) process.

Comfortable working on multiple systems and components simultaneously in various configurations. Ability to work independently with minimal supervision. Must be a US citizen. Must possess a valid US passport and be willing to travel extensively.

Work Environment &

Physical Demands This role requires a significant commitment to travel and the ability to work in non-traditional office settings. Extensive travel of up to 12 separate, week-long trips annually (approximately 6 OCONUS and 6 CONUS). Requires movement around piers, docks, and industrial facility spaces. Constant use of hands and fingers is required to operate tools and computer equipment. Able and willing to work aboard marine vessels of various sizes, which may include overnight stays. We are looking for a dedicated professional to join our Leidos team and make an immediate impact. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

Leidos

Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $17.2 billion for the fiscal year ended January 2, 2026. That’s why we craft compensation packages that reflect the importance of the work we do for our customers.

Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement.

Securing Your Data

Leidos will never ask you to provide payment-related information at any part of the employment application process. If you receive an email purporting to be from Leidos that asks for payment-related information or any other personal information, please report the email to . Commitment and Diversity All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law.

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Source: BeBee