Description
The Leidos Defense & Intelligence Group has a current opening for Information Assurance (IA) System Engineer supporting the U.S. Government in a challenging, dynamic setting located in Chantilly, Virginia. The position requires an active TS/SCI clearance with Polygraph. The IA System Engineer assists in IA system and networking design and integration efforts and implements customer policies and operating procedures to ensure the security of mission systems, protecting the systems from intentional or inadvertent access that may cause damage or destruction. The IA System Engineer will work in a highly collaborative environment with teammates, key stakeholders and the Government customer to ensure mission continuity and support to the intelligence community. This unique opportunity will allow you to participate on a high-visibility DoD/Intel program that provides IT support, systems integration and life cycle support, application development, network engineering, information systems security (ISS), and 24x7x365 support to mission-focused customer.
Primary Responsibilities
Participate as the primary security engineering representative on engineering teams for the design, development, implementation and/or integration of secure networking, IA architectures and enclave computing environments.
Provide specifications and detailed schematics for IA system and network architecture.
Provide specific detailed information for hardware and software selection, implementation, techniques and tools for the most efficient solution to meet business needs, including present and future IA requirements.
Monitor the results of production IA activities to support implementation of the overall IA program
Produce documentation necessary to obtain Information Assurance (IA) Certification/re-Certification and Accreditation (C&A) to support acceptance testing and evaluation of all program office systems in production.
Perform or monitor security testing of systems to ensure security features are functioning properly in support of certification and accreditation of production items.
Conduct IA testing of computing systems and network design
Maintain technical expertise in all areas of IA system, network and computer hardware and software interconnection and interfacing, such as routers, firewalls, gateways, storage arrays, etc.
Evaluate and report on new IA technologies to enhance capabilities of the network and computing environment.
Recommend action or technical options when planned accomplishments or production IA operational goals are not achieved.
Understand the site and enterprise well enough to work through IA system and network-related issues with other segments at the facility and across the enterprise.
Support the Government in the enforcement of the design and implementation of trusted relationships among external systems and architectures.
Apply knowledge of IA policy, procedures, and workforce structure to design, develop, and implement secure networking, computing, and enclave environments.
Support security planning, assessment, risk analysis, and risk management
Basic Qualifications
Must have an active TS/SCI with Polygraph clearance
Bachelor’s degree in Computer Science, Information Assurance, Information Security System Engineering, or related discipline from an accredited college or university is required and 8+ years of experience. 4 additional years of ISSE experience may be substituted for a bachelor’s degree.
Position requires either Security+ or Certified Information Systems Security Professionals (CISSP) certification, or equivalent.
Familiarity with Tenable Nessus vulnerability scanning software preferred.
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.
December 8, 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 $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.
About Leidos
Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com.
Pay and Benefits
Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at www.leidos.com/careers/pay-benefits.
Securing Your Data
Beware of fake employment opportunities using Leidos’ name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system – never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com.
If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission.
Commitment to Non-Discrimination
All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.
