Information Systems Security Engineer (Part-time)) at Leidos

Leidos has a new and exciting opportunity for an Information Systems Security Engineer in our Intel Sector 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!Job Summary:

Our LOE program provides our customer's Operations organization with the best possible solutions for their mission needs. We achieve this through rapid prototyping, new development, and advanced technology research. From leading-edge visualizations to analytic development, we're always pushing the boundaries to find new and better data sources and tradecraft to answer intelligence questions. With a focus on collaboration and a fast-paced environment, our prototype development program is the ideal place to grow your skills and make a real impact. Click here to learn more about how this program “Delivers Mission Success!”

Seeking a self-starting, motivated individual to assist the Lead Information System Security Officer supporting the Alpha+1 level with System Security Plans (SSPs). The individual will also be responsible for helping address security related issues with Software Development Engineers (SDE) and Systems Engineers (SE) building customer lab environments.

Job Responsibilities/Qualifications:

• Mission Focus: Collaborate closely with internal and external customers to complete required government paperwork and processes related to information system security. Assist the government customer with answering information system security-related questions and perform regular audits of information systems.
• Technical Proficiency: Understand STE/STN requirements and have experience applying the principles of the NIST 800-53 to include the procedures in the Risk Management Framework (RMF). Must have experience with Defense-In-Depth principles, networks and enterprise security architecture.
• Qualifications: Bachelor's degree plus eight (8) years of relevant Information security/Information assurance experience or equivalent. Information Assurance Manager (IAM) Tier 1 certification (**CAP(now CGRC),GSLC,Security+ CE,**and SSCP).
• Desirable Skills: Knowledge of customer corporate tools and data repositories. Experience with general Windows office software (e.g. Word, Outlook, Excel).
• Security Clearance Requirement:

Candidates must possess an active TS/SCI with Polygraph clearance to be considered for this role.

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 – apply today!

Careers.leidos.com

CONMD

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:

May 6, 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:

Pay Range $107,900.00 - $195,050.00

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.