Information Systems Security Engineer (ISSE) at Leidos

Leidos has a new and exciting opportunity for a Senior Information Systems Security Engineer (ISSE) in our National Security Sectors (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! Job Summary:As part of this highly visible and fast-paced Leidos prime contract youll work on a small team that maintains multiple system security plans in a unique and lively customer focused environment. The successful candidate will be part of a team that provides support to multiple organizations from a central location with no travel requirements. This is an exciting position that supports a mission critical program with high visibility and a proven track record of success.Dont miss out on this incredible opportunity to take your career to the next level. Apply today and join one of the most dynamic teams in the industry.Job Responsibilities/Qualifications: Mission Focus: Perform reviews such as technical security assessments of customer technical environments to identify points of vulnerability or non-compliance with standards and create mitigation plans. Design develop and integrate information assurance into security systems and components. Assist with systems engineers and developers with identification and implementation of security functionality to ensure uniform application policies. Apply system security engineering expertise to the design process life cycle risk management testing and other areas requiring security expertise.Technical Proficiency: Provide expert guidance and work product evaluation to security engineers. Interact with customers IT staff and stakeholders to define and achieve information assurance objectives. Provide government customer assistance to ensure that the architecture and design of information systems are functional and secure including program of record and systems and special purpose environments. Review certification and accreditation documentation. Work with up to eight (8) other ISSO and ISSEs within a team environment.Qualifications: Twenty (20) years experience as an ISSE. Bachelors degree in computer science Information Assurance Information Security System engineering or related discipline from an accredited college or university is required. A masters degree in computer science information assurance information security system engineering or related discipline may be substituted for two (2) years of experience. Four (4) years of additional ISSE experience may be substituted for a bachelors degree.Security Clearance: Active TS/SCI with Polygraph required to be considered for this role.Certification Requirement: CISSP-ISSEPAt 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!conmdIf youre looking for comfort keep scrolling. At Leidos we outthink outbuild and outpace the status quo because the mission demands it. Were not hiring followers. Were recruiting the ones who disrupt provoke and refuse to fail. Step 10 is ancient history. Were already at step 30 and moving faster than anyone else dares.Original Posting:November 17 2025For 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 $154050.00 - $278475.00The Leidos pay range for this job level is a general guideline onlyand 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. Key Skills International Development,Access Control System,Finance Control,Informatica,Information Technology Sales,Asp.Net MVC Employment Type : Full-Time Experience: years Vacancy: 1 Monthly Salary Salary: 154050 - 278475