Software Engineer - TS​/SCI

Description

The Defense Sector at Leidos is currently seeking a Software Engineer with 4+ years of professional experience to join a collaborative, product-focused engineering team. In this role, you will contribute to the design, development, testing, and delivery of software products written primarily in Java, Rust and JavaScript, while playing a key role in guiding Agile scrum teams and driving technical solutions from concept through delivery.

You will work closely with product management, UX, and other engineering leaders to deliver high-quality, user-focused software through continuous delivery, with a strong emphasis on automated testing, feedback, and iterative improvement.

This position does allow the ability to telework, but the chosen candidate must be within a reasonable driving distance to either Arlington, VA or Alexandria, VA. In addition, the chosen candidate must be able to be on site when asked.

• Design, development, and maintenance of software solutions using Java, Rust, JavaScript, and React
• Drive end-to-end technical solutions, including architecture, implementation, testing, and deployment
• Partner with product owners and stakeholders to translate requirements into scalable, maintainable designs
• Build and enhance user-facing features using React, as well as backend services and APIs
• Champion automated testing, code quality, and continuous integration/continuous delivery (CI/CD) practices
• Leverage generative AI tools to improve developer productivity, testing, and documentation where appropriate
• Lead code reviews, mentor engineers, and promote best practices across the team
• Facilitate or actively contribute to Agile ceremonies using Jira (sprint planning, stand-ups, retrospectives)
• Incorporate user and stakeholder feedback to improve software functionality, usability, and performance
• Identify technical risks and drive solutions that balance speed, quality, and maintainability

• US Citizen with at least an active Top Secret clearance with the ability to obtain an SCI prior to your start date
• Bachelor's degree in a relevant field and 4+ years of professional software development experience or a Master’s degree with 2+ years of experience. Additional experience may be considered in lieu of a degree
• Strong experience with Java, Rust, JavaScript, and React, or deep expertise in several with the ability to lead across the full stack
• Demonstrated experience working in Agile/Scrum environments and leading or guiding scrum teams
• Experience driving technical solutions and making architecture or design decisions
• Proficiency with Jira or similar Agile project management tools
• Strong background in automated testing (unit, integration, and/or end-to-end)
• Excellent communication skills and the ability to collaborate across disciplines
• Self-motivated desire to learn new programming languages, tools, frameworks, and techniques

• Experience with CI/CD pipelines and continuous delivery practices
• Familiarity with frontend testing frameworks (e.g., Jest, React Testing Library, Cypress)
• Experience building cloud-based or distributed systems
• Experience using AI-assisted development tools in production environments
• Understanding of usability, accessibility, and user-centered design principles

• Opportunity to work on impactful software products delivered continuously to users
• A collaborative team environment that values learning, feedback, and improvement
• Support for modern development practices, automation, and emerging tools
• Competitive compensation and comprehensive benefits package

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.

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…