**Description** **General program information and/or position overview.** Leidos is a FORTUNE 500 company bringing a mix of innovative technology and sector experience to customers in the national security, engineering, and health industries. Leidos is seeking a **Cyber Security Engineer** to support Post-Production Software Support (PPSS) and Post Deployment Software Support (PDSS) engineering and technical services to the CECOM Software Engineering Center Mission Command Division for our Fort Sill, Oklahoma location. **Primary Responsibilities** + Perform Assured Compliance Assessment Solution (ACAS) / Nessus automated application vulnerability scanning and configuration assessments. + Assess system compliance with DISA’s Security Technical Implementation Guides (STIGs) + Manage and document system cybersecurity posture using Enterprise Mission Assurance Support Service (eMASS) Risk Management Framework (RMF) Assessment and Authorization (A&A) workflow platform + Assist development of System Security Plans (SSP), Information Assurance Vulnerability Alert (IAVA) compliance reporting, Plans of Action and Milestones (POA&M), and security policies and procedures + Provide cybersecurity support for development facilities and laboratories, supporting Agile software development, code review, and testing **Basic Qualifications** + Bachelor’s Degree in IT/Cybersecurity/Computer Science and up to 2 years of experience. Additional years of experience may be considered in lieu of a degree. + Understanding of performing analysis of general cyber related technical problems and finding computer system security solutions for these problems or risks. + Ability to obtain CompTIA Certification for Security+ and the ability to obtain OS certification within 30 days upon hire. + Some technical knowledge in one of the following areas: System Administration, network engineering, computer applications, and security operations. + Basic knowledge of computer programming + Knowledge of Windows and Red Hat Linux environments + Ability to develop cybersecurity documentation + **US Citizenship with ability to obtain interim Secret security clearance prior to start date** . **Preferred Qualifications** + Familiarity with U.S. Army Field Artillery tactical systems or other DoD systems. + Familiarity with eMASS and the RMF Process + An active Secret security clearance **Original Posting:** July 14, 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 $55,250.00 - $99,875.00 The 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. REQNUMBER: R-00162625-OTHLOC-PL-2D1508 All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or veteran status. Leidos will consider qualified applicants with criminal histories for employment in accordance with relevant Laws. Leidos is an equal opportunity employer/disability/vet.