The NASA Advanced Enterprise Global Information Technology Solutions at Leidos currently has an opening for a Information System Security Engineer to work remotely. We are seeking a motivated and enthusiastic, Information System Security Engineer (ISSE) to join our cloud services team. The ISSE will be responsible for the secure design, development, and implementation of cloud-based systems, ensuring compliance with relevant security standards and frameworks such as NIST, FedRAMP, RMF, and ISO 27001. The ideal candidate will work closely with cloud architects, developers, and system administrators to embed security throughout the system lifecycle.
This is an exciting opportunity to use your experience helping the AEGIS mission. In this mission you will work to review system controls, maintain system security packages, and assist with ensuring our environment remains secure and meets our organization's operational requirements.
Primary Responsibilities:
- Implement and maintain compliance with the NIST Risk Management Framework (RMF) and FISMA High requirements for all cloud systems.
- Ensure that all cloud systems align with NASA NPR 2810, NIST SP 800-53, and other applicable federal cybersecurity policies and directives.
- Support the Authorization to Operate (ATO) process, maintaining continuous compliance and ensuring timely updates to security documentation.
- Oversee and enforce adherence to the shared responsibility model between the agency, cloud service providers, and system owners.
- Develop, maintain, and update system Security Authorization Packages, including the System Security Plan (SSP), Security Assessment Report (SAR), Plan of Action and Milestones (POA&M), and Continuous Monitoring (ConMon) documentation.
- Conduct Security Impact Analyses (SIA) for configuration changes, new deployments, or integrations within the cloud environment.
- Identify, assess, and document system vulnerabilities and risks, recommending mitigation strategies to maintain a compliant security posture.
- Prepare systems for internal and external audits, ensuring documentation and evidence are audit-ready.
- Coordinate with assessors and Authorizing Officials (AOs) during security control assessments (SCA) and ATO renewals.
- Track findings and corrective actions to closure, maintaining transparency through regular status reporting.
Basic Qualifications:
- Bachelor’s degree in Computer Science, Information Assurance, Cybersecurity, Engineering, or related technical field; Master’s degree preferred.
- 8+ years of progressive experience in information system security, with at least 3 years focused on securing cloud-based systems and services.
- Demonstrated experience working in a federal or FISMA Moderate/High environment, including implementing NIST RMF and FedRAMP controls.
- Must be able to obtain Public Trust (U.S Citizenship Required).
Preferred Qualifications:
- Must hold at least one DoD 8570.01-M IAT Level III or IAM Level III certification (e.g., CISSP, CISM, CASP+, or equivalent).
- Cloud security certifications such as CCSP, AWS Certified Security – Specialty, Microsoft Certified: Cybersecurity Architect Expert, or Google Professional Cloud Security Engineer are highly desirable.
- FedRAMP or NIST RMF practitioner certifications or training preferred.
Come break things (in a good way). Then build them smarter.
We're the tech company everyone calls when things get weird. We don’t wear capes (they’re a safety hazard), but we do solve high-stakes problems with code, caffeine, and a healthy disregard for “how it’s always been done.”
Original Posting:October 8, 2025For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.
The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. 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.
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What We Do
We Are Leidos
For 50 years we have been tackling some of the biggest problems that face our nation and our world.
OUR MISSION
Through our culture of innovation and history of performance, we develop deep customer trust built on integrity and create enduring solutions that improve our world. Leidos is a science and technology solutions leader working to address some of the world’s toughest challenges in the defense, intelligence, homeland security, civil, and healthcare markets. The company’s 43,000 employees support vital missions for government and commercial customers. Headquartered in Reston, Va., Leidos reported annual revenues of approximately $11.09 billion for the fiscal year ended January 3, 2020.
Leidos was cited for the meaningful work employees perform that is challenging, impactful, and aligned with our customers’ missions as reasons professionals want to work and stay at our company. Leidos has also been named to lists including Forbes’ Best Employers for Diversity, Forbes’ America’s Best Employers for Women, Military Times Best for Vets Employers, and Ethisphere Institute’s World's Most Ethical Companies®.
Employees enjoy career enrichment opportunities available through mobility and development and experience rewarding relationships with supportive supervisors and talented colleagues and customers. Employees appreciate our flexible work environment, allowing for and encouraging a true work-life balance. Our professionals are also excited about our Employee Resource Groups, like the newly launched Collaborative Outreach with Remote and Embedded Employees (CORE), which strives to create an environment where every employee, regardless of location, feels fully engaged as a valued employee of Leidos.
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