​​Information System Security Engineer​ job opportunity at Leidos.

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DatePosted 20 Days Ago bot
Leidos ​​Information System Security Engineer​
Experience: 12-years
Pattern: full-time
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degreeBachelor's (B.A.)
loacation Orlando, FL, United States Of America
loacation Orlando, FL....United States Of America

Are you ready to join Leidos all-star team? Through training, teamwork, and exposure to challenging technical work, let Leidos show how to accelerate your career path. The Decision Advantage Business Area at Leidos has an opening for an experienced   Information System Security Engineer (ISSE)   to work in our Orlando, FL office. Department of the Air Force (DAF) Battle Network and supporting infrastructure. In this mission we support the Department of the Air Force (DAF) to field and  operate  the customer's Digital Infrastructure. The   ISSE   will be involved in day-to-day activities and strategic long-term maturation of complex systems. Details are as follows:    ​ ​    ​ ​Primary Responsibilities     ​ ​  The ISSE will   be responsible for   monitoring TEMPEST certifications and the development of an RMF   Assess and Authorize (A&A)   package, including detailing controls, a system scanning plan, POA&M maintenance, and a Body of Evidence validating control implementation. High Level tasking for this team will include the following:     ​ ​ Plan and detail the security of a complex mission-critical defense network per the DoD RMF. ​ Plan, document, and achieve system Interim Authorization to Test (IATT), Interim Authorization to Operate (IATO), Authorization to Operate (ATO), Authorization to Connect (ATC), Interconnection Security Agreement (ISA) and other approvals as required by the Government Authorizing Official. ​ Perform and/or review security assessments of computing environments to   identify   points of vulnerability, non- compliance with established   Cybersecurity   standards and regulations and recommend mitigation strategies. ​ Validate and verify system security requirements definitions and analysis. ​ Assist   architects and systems developers in the identification and implementation of   appropriate information   security functionality to ensure uniform application of security policy and solutions. ​ Assess and develop mitigations for   Security Compartmented Information ( SCI )   system security threats/risks throughout the program life cycle. ​ Contribute to the security planning, assessment, risk analysis, risk management, certification and awareness activities for   SCI   system s   and   Classified   networking operations.    ​ ​     ​ ​Basic Qualifications     Bachelors   Degree   and 8 to 12 years of relative experience.   ​ Active and current Secret clearance with the ability to obtain a and maintain TS/SCI clearance.   ​ Achievement of any DoD 8140 or DoD 8570 baseline certification within 6 months of start of work. ​ Experience with   Air Force Intelligence Community   NIST   Risk Management Framework  . Experience with I ntelligence   C ommunitive   D irective   503. ​ Experience with   Cross-domain or segmented   architectures. Experience with NIST SP 800-53 control development and documentation. ​ Experience   operating   within Sensitive Compartmented Information Facility (SCIF) and Classified networks. ​ ​Preferred Qualifications.      ​ ​ Experience working with DoD security A ssessment   and Authorization. ​ Experience with   eMASS, Jira, and Confluence. ​ Experience developing and   maintaining   a uthorizati on Body of Evidence. ​ Experience with Tenable Nessus, Security Onion SIEM solution. U nderstanding of TEMPEST requirements and assessments    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: February 9, 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 - 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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