Leidos has a new and exciting opportunity for a Senior Information Systems Security Officer (ISSO) in our Intelligence Sector, Cyber & Analytics Business Area (CABA) Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management. At Leidos, we offer competitive benefits Leidos Pay and Benefits, including 4 or more weeks Paid Time Off, 11 paid Holidays, 401K with a 6% company match and immediate vesting, Flexible Schedules, Discounted Stock Purchase Plans, Technical Upskilling, Education and Training Support, Parental Paid Leave, and much more. Join us and make a difference in National Security!
This position is eligible for a 15k sign on bonus!
The Senior ISSO plays a vital role in securing and maintaining the integrity of our information systems through robust security measures and compliance frameworks. This multi-year, high-impact program supports our customer site in Annapolis Junction, MD, focusing on the development, integration, deployment, and sustainment of cutting-edge large-scale collection systems.
As part of this mission-critical contract, you will have the opportunity to work independently, innovate with emerging technologies, and contribute directly to national security. If you're passionate about solving complex security challenges and making a tangible impact, this is the role for you. Your greatest work is ahead!
Enhancing security posture by supporting the program, organization, system, or enclave’s information assurance initiatives and enforcing security policies, standards, and methodologies.
Overseeing security operations for information systems, managing daily security aspects, evaluating security solutions for classified processing, and conducting vulnerability and risk assessments for accreditation.
Managing configuration and system integrity by administering configuration management (CM) for security software, hardware, and firmware, ensuring compliance with security controls, and assessing the impact of system changes.
Developing and maintaining security documentation, including System Security Plans (SSPs), Risk Assessment Reports, Certification & Accreditation (C&A) packages, and System Requirements Traceability Matrices (SRTMs).
Ensuring compliance with security authorization activities following the Information System Certification and Accreditation Process (NISCAP) and DoD Risk Management Framework (RMF).
Providing technical expertise in security policies and operations, supporting the implementation and maintenance of security measures, and collaborating with stakeholders to strengthen the security posture.
Driving continuous improvement by assessing existing security processes, identifying vulnerabilities, and implementing proactive solutions to enhance system resilience.
Bachelor of Science degree in Computer Science, Information Assurance, Information Security, or a related discipline, plus 12+ years of relevant experience. In lieu of a degree, an additional 4 years of experience may be considered on a case by case basis.
Industry Expertise: 7+ years of ISSO experience supporting IC or DoD programs and contracts of similar scope, type, and complexity.
Experience with customer Info Security tool suite
Certifications & Compliance: DoD 8570 compliance with IAM Level II or IAT Level III (CASP, CISSP, or Associate).
Clearance Requirement: Must hold an active TS/SCI with Polygraph.
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If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.
May 20, 2026
For 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.
Pay Range $131,300.00 - $237,350.00
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.
Leidos is a Fortune 500® innovation company rapidly addressing the world’s most vexing challenges in national security and health. The company's global workforce of 48,000 collaborates to create smarter technology solutions for customers in heavily regulated industries. Headquartered in Reston, Virginia, Leidos reported annual revenues of approximately $15.4 billion for the fiscal year ended December 29, 2023.
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 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.
Your most important work is ahead, visit careers.leidos.com for our latest opportunities.
