Leidos has a new and exciting opportunity for a Applications Software Engineer in our National Security Sector's (NSS) 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!
PROGRAM SUMMARY:
Product development includes tactical mobile development as well as enterprise web application development. The portfolio of products support the Cybersecurity and Information Assurance domains. These systems deploy a variety of technologies and communicate with infrastructure interfaces to bring secure, modern-day Cybersecurity and Cryptographic Key Management solutions to the warfighter.
Primary Responsibilities:
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.
Basic Qualifications:
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)
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:March 10, 2026For 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.
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.
Top Skills
What We Do
We Are Leidos
For 50 years we have been tackling some of the biggest problems that face our nation and our world.
OUR MISSION
Through our culture of innovation and history of performance, we develop deep customer trust built on integrity and create enduring solutions that improve our world. Leidos is a science and technology solutions leader working to address some of the world’s toughest challenges in the defense, intelligence, homeland security, civil, and healthcare markets. The company’s 43,000 employees support vital missions for government and commercial customers. Headquartered in Reston, Va., Leidos reported annual revenues of approximately $11.09 billion for the fiscal year ended January 3, 2020.
Leidos was cited for the meaningful work employees perform that is challenging, impactful, and aligned with our customers’ missions as reasons professionals want to work and stay at our company. Leidos has also been named to lists including Forbes’ Best Employers for Diversity, Forbes’ America’s Best Employers for Women, Military Times Best for Vets Employers, and Ethisphere Institute’s World's Most Ethical Companies®.
Employees enjoy career enrichment opportunities available through mobility and development and experience rewarding relationships with supportive supervisors and talented colleagues and customers. Employees appreciate our flexible work environment, allowing for and encouraging a true work-life balance. Our professionals are also excited about our Employee Resource Groups, like the newly launched Collaborative Outreach with Remote and Embedded Employees (CORE), which strives to create an environment where every employee, regardless of location, feels fully engaged as a valued employee of Leidos.
Your most important work is ahead.
