Information Systems Security Engineer (ISSE)

Company: Leidos
Location: Universal City
Posted on: April 3, 2026

Job Description:

Unleash Your Potential At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customer’s success. We empower our teams, contribute to our communities, and operate sustainably. Everything we do is built on a commitment to do the right thing for our customers, our people, and our community. Our Mission, Vision, and Values guide the way we do business. If this sounds like an environment where you can thrive, keep reading! Looking to take your career to the next level? Your search ends with Leidos! We're seeking an Information Systems Security Engineer to support the Air Education & Training Command at Randolph AFB in San Antonio, TX. Candidates must currently possess a TS/SCI security clearance. Serve as the Information Systems Security Engineer (ISSE) and principal security adviser to the Air Education and Training Command (AETC) Air Force (AF) Intelligence Community (IC) Command Chief Information Security Officer (CISO), spanning 10 bases in support of two Number AF (NAF), three Wings, two Group, and 33 Units. You will be the primary authority on all matters involving the security of the information system, from high-level architecture design to daily security operations. As the ISSE for the Command, this role is focused on proactive security engineering (85%). In addition, you will also conduct duties and require knowledge/expertise as an information system security officer (ISSO) for the HQ AETC/A2 Intelligence Directorate (15%). Key Responsibilities: Security Architecture & Engineering Support: Support the design, development, and implementation of secure information system solutions for AETC's Air Force Intelligence Community (IC) Information Environment (IE). Review and provide technical recommendations on hardware, operating systems, and software, ensuring they align with government security requirements for confidentiality, integrity, and availability. Serve as the AETC resident expert to provide subject matter expertise, knowledge, and experience to the government client on the interpretation and application of security directives, including ICD 503, CNSS 1253, and the NIST SP 800 series. Policy & Compliance Support: Assist the government in developing and implementing MAJCOM-level cybersecurity policy to ensure compliance with DoD, Air Force, and IC directives. Support the command's Risk Management Framework (RMF) program by assisting government personnel prepare and review certification and accreditation (A&A) packages. Analyze Security Technical Implementation Guide (STIG)/Security Requirement Guide (SRG) compliance scans and provide recommendations for system hardening and remediation. Client & Team Support: Provide technical guidance and training materials to support government Information System Security Managers (ISSMs) and Information System Security Officers (ISSOs). Serve as a trusted adviser to AETC Units, ensuring security best practices are understood and implemented effectively. Mandatory Qualifications: Currently possess (and maintain) an active TS/SCI security clearance. Bachelor’s degree in Computer Science, Cybersecurity, Software Engineering, or a related technical field. 5-12 years of relevant experience. CISSP certification in good standing. Must meet and maintain all DoD 8140 certification requirements. Demonstrated expert-level proficiency in computer architecture, computer networking, operating systems, and computer/network security fundamentals. Ability and willingness to travel. Anticipate approximately 8 trips per year to support AETC missions. Ability to work with minimal supervision. Preferred Qualifications: Technical Experience: Hands-on experience with vulnerability scanning tools, intrusion detection systems (IDS), and other security monitoring tools. Proficiency with the XACTA IA Manager application for Risk Management Framework (RMF) package management. Experience in secure coding practices and application security assessments. Policy & Framework Expertise: In-depth knowledge of DoD RMF processes and compliance regulations. Ability to develop and interpret security architectures, data flow diagrams, and network diagrams. Professional Skills: Proven experience in designing and implementing robust security solutions. Excellent communication skills, with the ability to brief senior leaders and mentor junior personnel. Ability to meet mission requirements in a timely manner, integrate into a professional and secure work environment, and adapt to changing priorities. Strong analytical and problem-solving capabilities. Experience working on an AF Major Command (MAJCOM) staff or equivalent. Experience working with secure compartmental information (SCI) systems. EIO2024 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: April 1, 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 $87,100.00 - $157,450.00 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.

Keywords: Leidos, Austin , Information Systems Security Engineer (ISSE), IT / Software / Systems , Universal City, Texas