Senior Information System Security Officer

Leidos LLC; Maryland; On-site; USD 131,000 - 237,000; Full time

Benefits offered by this job

Paid Time Off

11 holidays

401K with 6% company match

Flexible schedules

Discounted stock purchase plan

Education and training support

Parental paid leave

Job summary

Leidos in Annapolis Junction, MD seeks a Senior Information System Security Officer to oversee security for a large software development program, including IA, SSPs, and IAVA management.

The role requires TS/SCI with polygraph, 12+ years related experience, and strong collaboration with security professionals to protect critical data and detect threats.

We offer competitive benefits and a path to advance within a national security-focused team.

Qualifications

• Bachelor’s degree in a related field and at least 12 years of relevant experience.
• TS/SCI with polygraph security clearance.
• At least 10 years ISSO experience working independently or on teams maintaining secure information system operations in isolated, connected and standalone environments.
• At least 5 years of experience using tools to support IAVA management.
• At least 5 years of experience using tools to support the preparation, maintenance, and management of SSPs and other security related documentation.
• Demonstrated knowledge of and experience with several security tools; hardware/software security implementation; communication protocols; encryption techniques/tools.
• Experience performing day-to-day security operations on large, complex information systems.

Responsibilities

• Provide support for implementing and enforcing information systems security policies, standards, and methodologies.
• Assist in evaluating security solutions to meet security requirements for processing multiple types of information.
• Assist with the Configuration Management for information system security software, hardware, and firmware.
• Analyze threats and develop and implement best practice methodologies for incident detection, reporting, and vulnerability remediation.
• Maintain records on workstations, servers, routers, firewalls, intelligent hubs, network switches, etc. including system upgrades.
• Develop and update system security plans and other IA documentation.
• Provide support for Information Assurance Vulnerability Alerts (IAVAs) management.

Skills

ISSO experience

IAVA management

SSP documentation

Security evaluations

Team player

Education

Bachelor's degree in a related field

Tools

Security tools

IAVA management tools

SSP preparation tools

Vulnerability assessment tools

Job description

Leidos has a new and exciting opportunity for a Senior Information System Security Officer in our National Security Sector's (NSS) 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, including 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!

Senior Information System Security Officer (ISSO) Leidos currently has an opening for a Senior Information System Security Officer (ISSO) to work at our Annapolis Junction, MD location. The selected candidate will act as an ISSO for a large software development program which includes software maintenance and development, IT support (Network/Workstation/Server), systems integration and life cycle support, enterprise application development, network engineering, and information systems security (ISS). The candidate will work with other security professionals in developing and implementing strategies to detect and mitigate threats to information systems, protect critical data sets, and provide assessments of system and network vulnerabilities.

Primary Roles and Responsibilities

• Provide support for implementing and enforcing information systems security policies, standards, and methodologies.
• Assist in the evaluation of security solutions to ensure they meet security requirements for processing multiple types of information.
• Assist with the Configuration Management for information system security software, hardware, and firmware.
• Analyze threats and develop and implement best practice methodologies for incident detection, reporting, and vulnerability remediation.
• Maintain records on workstations, servers, routers, firewalls, intelligent hubs, network switches, etc. to include system upgrades.
• Evaluate security solutions to ensure they meet security requirements for processing information.
• Maintain operational security posture for information systems.
• Provide support to the Information System Security Manager (ISSM) for maintaining the appropriate operational IA posture for a system/program/enclave.
• Develop and maintain documentation for Certification & Accreditation in accordance with specified policies.
• Develop and update system security plans and other IA documentation.
• Provide support for Information Assurance Vulnerability Alerts (IAVAs) management (initiating IAVA responses and system security scans, completing remediation, extending IAVA patches and security updates to designated sites, etc.).
• Provide CM for security-relevant information system software, hardware, and firmware.
• Develop system security policy and ensure compliance.
• Administer the user identification and authentication mechanisms of the Information System.

Basic Qualifications

• Bachelor’s degree in a related field and at least 12 years of relevant experience.
• Additional experience may be substituted for a degree.
• TS/SCI with polygraph security clearance.
• Must have at least 10 years of experience as ISSO working independently, and/or on teams maintaining secure information system operations in isolated, connected and standalone environments.
• Must have at least 5 years of experience using tools to support IAVA management.
• Must have at least 5 years of experience using tools to support the preparation, maintenance, and management of SSPs and other security related documentation.
• Demonstrated knowledge of and experience with several of the following: current security tools; hardware/software security implementation; communication protocols; encryption techniques/tools.
• In-depth experience completing security evaluations of software systems or architectures to ensure they meet security requirements.
• In-depth experience proposing, coordinating, implementing, and enforcing information systems security policies, standards, and methodologies, preferably on a large software or IT program.
• Demonstrated experience performing day-to-day security operations of large, complicated information and information processing systems.
• Must be committed to developing and adhering to best practices.
• Must possess a high level of self-initiative and must be a solutions-oriented team player.
• Must have excellent interpersonal skills.

Preferred Qualifications

• Extensive experience as an Information Systems Security Officer on large software development and integration programs.
• DoD 8570 compliance with IAT Level II or higher.
• DoD 8570 compliance with IAM Level II or higher.

At Leidos, the opportunities are boundless. We challenge our staff with interesting assignments that allow them to thrive professionally and personally. For us, helping you grow your career is good business.

We look forward to learning more about you.

Pay Range: Pay Range $131,300.00 - $237,350.00

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. For more information, visit www.Leidos.com.

Pay and Benefits

Pay and benefits are fundamental to any career decision. 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
• Retirement

More details are available here.

Securing Your Data

Leidos will never ask you to provide payment-related information at any part of the employment application process. And Leidos will communicate with you only through emails that are sent from a Leidos.com email address. 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 [e-mail].

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.

Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.