Software Developer

Location: Chantilly, VA

Time Type: Full time

Job Description

Leidos is seeking an experienced Software Developer to support mission-critical projects and infrastructure initiatives. The ideal candidate is comfortable working with both legacy systems and modern cloud-based architectures, enjoys solving complex problems, and thrives in a collaborative Agile environment.

What You’ll Do

• Maintain, enhance, and modernize legacy applications to meet evolving mission needs

• Design, develop, and deploy scalable solutions using Java, Spring Boot, Angular (TypeScript), and AWS

• Build and consume RESTful APIs and integrate services across distributed systems

• Develop custom ETL solutions and data pipelines, including solutions leveraging Elasticsearch

• Write and maintain custom scripts to install, configure, and deploy applications on EC2 instances

• Collaborate within Agile/Scrum teams to deliver high-quality software on schedule

• Perform unit testing, peer code reviews, and automated testing (e.g., Selenium)

• Document system designs, workflows, and technical solutions clearly and thoroughly

• Mentor junior developers and promote software engineering best practices

• Troubleshoot issues methodically and contribute technically sound solutions in a team environment

Required Qualifications

• Active TS/SCI with Polygraph

• Bachelor’s degree with 10+ years of relevant experience (additional experience may be considered in lieu of a degree)

• Strong hands-on experience with:

  • Java and Spring Boot

  • Angular (TypeScript)

  • Amazon Web Services (AWS) / cloud-based development

• Experience developing RESTful APIs and custom ETL solutions

• Proficiency with Git, Jenkins, Selenium, and Rundeck

• Experience working in Linux command-line environments (Red Hat preferred)

• Proven ability to interpret customer requirements and translate them into technical solutions

• Strong communication, time management, and documentation skills

Desired Qualifications

• Experience with identity, authentication, and access control development practices

• Experience with containerization and modular or microservices-based architectures

• Full-stack development experience

• Familiarity with UI/UX design principles

• Experience with automation frameworks and testing strategies

• AWS Certification

Why Leidos

At Leidos, you’ll work on meaningful missions, collaborate with talented engineers, and help modernize systems that matter. We value innovation, mentorship, and technical excellence.

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:

Pay Range:

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.