Junior Information Systems Security Officer

Description Leidos has a new and exciting opportunity for a Junior Information Systems Security Officer (ISSO) 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 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! We are seeking a motivated and detail-oriented Junior Information System Security Officer (ISSO) to support our cybersecurity operation in Columbia, MD. The ideal candidate will have foundational knowledge of the Risk Management Framework (RMF) process and a strong desire to grow in the field of information security and compliance.

The candidate will support the company’s system infrastructure system security plan and all related processes under the guidance of the Lead ISSO. This is an excellent opportunity for individuals looking to start their career in cybersecurity. Primary Responsibilities • Assist the Lead ISSO in implementing and maintaining cybersecurity policies, procedures, and controls and other duties as assigned.

• Monitor and report security incidents and vulnerabilities. • Conduct weekly reviews of systems audit logs and vulnerability scan results. • Maintain records to include user account management, workstations, servers, network switches, etc.
• Develop and update documentation for Standard Operating Procedures (SOPs). • Perform Data Transfer Agent responsibilities • Assist with management of security aspects of the information system and perform day-to-day security operations of the system. Basic Qualifications • High school diploma required; bachelor’s degree in a related technical field preferred (experience may be considered in lieu of degree).
• Minimum of 2 years of relevant experience. • Current DoD 8140.03-compliant IAM Level I certification (e.g., CompTIA Security+, (ISC)² CAP, or GIAC GSLC) and ability to maintain compliance throughout employment. • Working knowledge of Risk Management Framework (RMF), NIST, and CNSS cybersecurity requirements, including NIST 800-53 security controls and compliance frameworks.
• Strong understanding of cybersecurity risk management techniques. • Excellent verbal and written communication skills; able to communicate effectively across all levels of the organization. • Ability to work independently and collaboratively within a team, demonstrating adaptability, organization, and problem-solving skills.
• Clearance Requirement: Active Top Secret/SCI w/polygraph Preferred Qualifications • Background in System Administration is a plus. • Experience with eMass • Ability to maintain security artifacts and documentation. 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. Original Posting: December 3, 2025 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: Pay Range $69,550.00 - $125,725.00 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.

About 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 $16.7 billion for the fiscal year ended January 3, 2025. 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 and Retirement.

More details are available at www.leidos.com/careers/pay-benefits. Securing Your Data Beware of fake employment opportunities using Leidos’ name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work).

Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system – never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com. If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S.

Federal Trade Commission. Commitment to Non-Discrimination 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.