React Software Developer

The National Security Sector within Leidos is seeking a Full Stack Developer with a heavy concentration using React, with strong systems, software, cloud, and Agile experience. The qualified candidate will support a complex program providing Agile development and operations and maintenance for critical systems on a mission-critical program supporting the Passenger Systems Program Directorate (PSPD) within Customs and Border Protection (CBP). PSPD supports the Department of Homeland Security (DHS) and CBP critical missions, specifically screening and processing travelers at the ports of entry (POEs) into the United States.

In this hands-on position, you will work collaboratively to architect, design, build, deliver, and enhance highly available, scalable, real-time systems. You will exercise your judgment in determining and recommending the best designs based on customer business objectives, timelines, and other resource constraints. You will participate in and/or direct major deliverable of projects through all aspects of the software development life cycle including scope and work estimation, architecture and design, coding, and unit testing.

**This position REQUIRES the candidate to be in Ashburn, VA, twice a week**

Basic Qualifications:

• BS/BA degree and 8 years of related experience or Master’s with 10 years of related experience; OR 4 years of related experience in lieu of degree

• Thorough understanding of React and its core principles

• Self-starter with experience with Enterprise level applications and can guide large team

• Experience with Agile Scrum methodology and working in a SecDevOps environment

• Experience working with containerized applications preferably utilizing Konvoy

• 3+ years’ experience developing cloud ready applications and/or experience migrating applications to the cloud.

• 2+ years of experience in one of the following: JAVA, JSF, JavaScript, Spring, Automated test tools such as Selenium.

• Proficient in JAVA, JavaScript, including DOM manipulation and the JavaScript object model

• 3+ years experience with Microservices/RESTful APIs

• Hands on experience with HTML/CSS/SCSS

• Hands on experience of modern authorization mechanisms, such as JSON Web Token (JWT)

Preferred Qualifications:

• Hands on working experience with Redux Store for session management.

• Hands on experience with more current specifications of EcmaScript (ES6)

• Experience with common front-end development tools such as Babel, Webpack, NPM, Node etc.

• A knack for benchmarking and optimization is plus.

• AWS Developer or Solutions Architect certifications

• Active Full CBP BI

• Experience with Google Cloud

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:

December 4, 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:

Pay Range $104,650.00 - $189,175.00

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.