Full Stack Developer (SME) with Security Clearance

R-00174062 Description Leidos has an exciting opportunity for a Full Stack Developer (SME) in our Intel Security Sector's Analysis Solutions Business Area. 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 Description As a Full Stack Developer on this program, you will have the opportunity to build strong systems, software, and cloud environments and provide operations and maintenance for critical systems. The candidate will provide technical expertise and support in the design, development, implementation and testing of customer tools and applications.

Based in a DevOps framework, this role participates in and/or direct major deliverables of projects through all aspects of the software development lifecycle including scope and work estimation, architecture and design, coding and unit testing. Primary Responsibilities • Participate in software programming initiatives to support innovation and enhancement, using Java, JavaScript, Python, SpringBoot, Hibernate • Developing and directing software system validation and testing methods using Junit and Katalon • Develop and integrate custom developed software solutions to leverage automated deployment technologies leveraging an Atlassian tool suite like JIRA and Confluence to track activities • Develop, prototype and deploy solutions within Commercial Cloud Solutions leveraging Infrastructure platform services creating innovative solutions to meet the technical needs of customers. • Analyze (though proof of concept, performance, and end-to-end testing) and effectively coordinate Infrastructure needs driven by developed software to meet customer mission needs • Support the Agile software development lifecycle following Program SAFe practices while coordinating closely with team members, Product Owners and Scrum Masters to ensure User Story alignment and implementation to customer use cases • Document and Perform systems software development, including deployment of build artifacts across different environments leveraging GitFlow constructs and using industry leading DevOps tools like GitHub, Jenkins, and Unix bash scripting Basic Qualifications • Expert with common Agile practices, service-orientated environments, and development practices • Expert with Java, Angular, Spring and C2S and the software development lifecycle, with experience delivering within DevOps toolsets/practices • Direct experience utilizing software testing performance tools, such as Junit or Katalon and scripting languages, such as Python, and Bash while working in an Agile development environment • Expert developing in Commercial Cloud Platforms (ex, AWS, Google Cloud, Azure) and leveraging cloud data services (ex: S3, RDS, EFS) • Expert using version control and issue/problem tracking systems • Master’s degree with 15 or more years of prior relevant experience or Doctorate with 13 or more years of relevant experience.

Additional years of experience may be substituted in lieu of a degree. • To be considered must have an active TS/SCI with polygraph security clearance Preferred Qualifications • Experience with structured analysis and design methodologies • Experience working on the customer's systems • Understanding of the customer's system development policies CABARESTON 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: January 21, 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 $154,050.00 - $278,475.00 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 • 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.