> Markdown version of [/jobs/ext/2696428-application-software-engineer](https://www.wearedevelopers.com/jobs/ext/2696428-application-software-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Application Software Engineer - **Company:** Leidos, Inc. - **Location:** San Diego, CA, United States - **Experience:** Experienced - **Salary:** $87,100.0 - $157,450.0 - **Contract:** Permanent contract - **Skills:** HTML, JavaScript (Programming Language), Agile Methodology, Amazon Web Services, Data Analysis, Apache Tomcat, Software Applications, Systems Engineering, FishEye (Software), JIRA, Automation of Tests, Cascading Style Sheets (CSS), Mobile Application Development, Signals Intelligence, Continuous Integration, Database Development, DevOps, Fault Tolerance, Github, Google Web Toolkits, Gradle, Web Servers, WildFly (JBoss AS), Junit, Key Management, PostgreSQL, Apache Maven, Microsoft SQL Server, MySQL, Node.Js, Oracle (Applications), Scrum Methodology, Qt (Software), Software Tools, Fortify (Software), Ionic, Selenium, Simple Object Access Protocol (SOAP), Software Engineering, SonarQube, SQLite, VersionOne, Web Applications, HP WebInspect, Web Services, Computer Network Operations, Test-Driven Development (TDD), ReactJS, Git, SC Clearance, AngularJS, Gherkin, Information Technology, Extreme Programming, Restful APIs, Cucumber (Software), Jenkins, Vulnerability Analysis - **Published:** September 3, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9138291/application-software-engineer ## About the Role * BS Degree in Computer Science or equivalent and 4+ years of relevant experience. Will consider experience in lieu of a degree. * Active Secret Clearance (Required) * Experience with web-based (HTML, CSS, JavaScript) in a web-based environment * Experience in Scrum Methodology or other Agile environments (e.g., SAFe, XP) * Experience with UI / Development Frameworks (E.g, AngularJS, Ionic, GWT, SmartGWT, Qt, React, Node.js) * Experience with Automated Testing Tools/Technologies/Concepts (Selenium, Cucumber, Gherkin, BDD) * Experience with Test Driven Development (TDD) * Works well in a team environment and has excellent written and communication skills * DoD 8570 approved security certification (i.e., Security +) (Will be required 90 days after hire). Preferred Qualifications: * Experience with Web Services Architectures (REST, SOAP, AWS) * Experience with Software CM (e.g., Git, GitHub) * Experience with Continuous Integration / Quality, and DevOps concepts and tools / technologies (e.g., Ant / Maven, Jenkins, SonarQube, FishEye, Crucible, Gradle, Junit) * Experience with Security Scanning (HP Fortify, HP WebInspect) * Experience with Build Scripts (e.g., Maven, ANT) * Experience with Mobile Application Development * Experience with Agile Management Tools and Concepts (e.g., VersionOne, JIRA, Rally, etc.) * Experience with Web Server Configuration (e.g., JBOSS, Wildfly, Tomcat) * Experience with Database Development (e.g., Postgres, SQL Server, MySQL, SQLite, Oracle) ## Description Leidos has a new and exciting opportunity for a Applications Software Engineer in our INTEL Sector's Cyber & Analytics Business Area (CABA). 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!, The successful candidate will work on a mix of web service development, full stack web application development and robust persistence layer implementations in an Agile Scrum environment. This involves the use of Themes, Epics, User Stories, acceptance criteria and other system engineering artifacts as part of an Agile team. He/she will use a variety of software engineering best practices and clean coding techniques to ensure that developed code is maintainable, efficient, reliable, understandable, secure, fault tolerant and meets S.O.L.I.D coding principles. The candidate will be knowledgeable about (and apply) secure software development principles and techniques. He/she will use software tools in cooperation with continuous integration and test automation management process and understand software components and their interface requirements. The candidate will interface with software engineers, system engineers, information assurance engineers, test engineers, quality assurance, and other project team members. He/she will be responsible for setting the standards and helping the team adopt and adhere to Test Driven Development (TDD) practices within the Leidos Agile Framework to ensure the proper degree of engineering rigor is applied to all assigned tasks. ## Related Videos - [Security Pitfalls for Software Engineers](https://www.wearedevelopers.com/videos/726-security-pitfalls-for-software-engineers) - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [The Resilience of the World Wide Web](https://www.wearedevelopers.com/videos/1281-the-resilience-of-the-world-wide-web) - [Improving quality with Agentic AI with Rovo Dev and Xray](https://www.wearedevelopers.com/videos/2005-improving-quality-with-agentic-ai-with-rovo-dev-and-xray) - [Navigating the Corporate Jungle: Life as a Developer in a large Company](https://www.wearedevelopers.com/videos/621-navigating-the-corporate-jungle-life-as-a-developer-in-a-large-company) - [Git for Code Reviews](https://www.wearedevelopers.com/videos/429-git-for-code-reviews) ## Related Articles - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [7 Important Tips That Every Software Developer Should Know](https://www.wearedevelopers.com/magazine/101-7-important-tips-that-every-software-developer-should-know) - [What’s the Difference between a Junior, Mid, and Senior Developer?](https://www.wearedevelopers.com/magazine/238-what-s-the-difference-between-a-junior-mid-and-senior-developer) - [The 8 Best Code Testing Tools](https://www.wearedevelopers.com/magazine/402-the-8-best-code-testing-tools)