Leidos is seeking a Junior Software Development Engineer to support analysis, design, development, and testing of cross-platform applications. The role involves working with Linux and Android, using development platforms such as Qt and Android, and programming in C++. Experience with SQLite and integrating modules across languages is desired. You will work in an Agile Scrum environment, applying solid software engineering, object-oriented, and functional programming principles to produce maintainable, efficient, secure, and reliable code. Responsibilities also include supporting configuration management and understanding interfaces with APIs and host systems (virtualized, containerized, or hardware). The position collaborates closely with UI/UX engineers, software and system engineers, AI engineers, and QA teams to meet customer requirements. With a 9/80 schedule, and every other Friday off, our flexible work environment provides you a chance to change the world without giving up your personal life Required Qualifications: - Position requires a current/active Secret DoD security clearance. - BS Degree in Computer Science or equivalent with 4-8 years' experience. - 4+ years of experience developing for Linux/Unix and Android operating systems. - 4+ years' experience with C++ - 1-4 ears of experience with Qt and Android application platforms - Experience in design and implementation of user interfaces for embedded applications / mobile devices with modern UI & Graphics frameworks. - The ideal candidate will have experience developing mobile applications with an eye for resource limited (and therefore optimized) software engineering. - Current Security + Certification (will need to achieve within 90 days of hire) Preferred Qualifications: - Experience in Scrum Methodology or other Agile practices. - Experience with Mobile Application Development. - Experience with Software CM (e.g., Subversion, Git, GitLab, GitHub). - Experience with UI / UX Development Frameworks (e.g., Qt, Android, AngularJS, Ionic, GWT, SmartGWT, React, Node.js). - Experience with Agile Management Tools and Concepts (e.g., VersionOne, JIRA, Rally, etc.). - Experience with Automated Testing Tools/Technologies/Concepts (Squish for Qt, TDD, Selenium, Cucumber, Gherkin, BDD, Catch 2, Flawfinder, Valgrind). - Experience with formalized API development methodologies (e.g., OpenAPI 3.0) - Experience with SQLite, NNG, Google Protocol Buffers, Clang Format, Clang-Tidy a plus Original Posting: June 16, 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.