Senior Software Engineer / Data Scientist (Training Systems)

Job overview

Senior Software Engineer / Data Scientist (Training Systems) is an onsite position in Merrifield, VA, with a salary range of $154,050.00 - $278,475.00 per year. Leidos is a leader in digital and mission innovations. This role focuses on developing modern training, education, and mission-support applications for national security programs, combining applied data science, AI/ML integration, and software engineering to build scalable, interactive learning and training systems within classified environments.

What you'll do

• Design, develop, and maintain modern web-based training and learning applications.
• Build responsive, scalable, and accessible front-end applications using TypeScript and modern frameworks.
• Develop and integrate AI/ML-enabled capabilities into training and operational support systems.
• Apply data science and analytics techniques to support adaptive learning, user insights, performance analysis, and mission workflows.
• Collaborate with instructional designers and subject matter experts to translate learning objectives into interactive digital experiences.
• Integrate front-end systems with APIs, backend services, AI/ML pipelines, and enterprise platforms.
• Develop reusable UI components, visualizations, and workflows supporting scalable training ecosystems.
• Work with structured and unstructured data sources across enterprise and classified environments.
• Participate in the full software development lifecycle including architecture, implementation, testing, deployment, and sustainment.
• Support deployment and operationalization of AI/ML capabilities within production systems.
• Utilize modern AI-assisted development workflows and coding agents to accelerate software delivery, prototyping, testing, refactoring, and documentation.
• Apply contemporary engineering practices using AI-powered development tools while maintaining strong standards for code quality, security, maintainability, and testing.
• Evaluate and integrate emerging developer tooling and agentic engineering capabilities into team workflows and application development practices.
• Troubleshoot application, integration, and data-related issues across distributed environments.
• Contribute to software engineering standards, reusable frameworks, and development best practices.
• Stay current with emerging front-end, AI/ML, and learning technology trends.

What we're looking for

Education

Bachelor’s degree in Computer Science, Data Science, Software Engineering, Mathematics, Engineering, or related technical field

Experience

8+ years of relevant experience and 15+ years overall experience; additional experience may be considered in lieu of degree

Skills & competencies

full-time

senior

software engineer

data scientist

training systems

merrifield va

leidos

information technology

ai/ml

typescript

python

ts/sci clearance

About the employer

Leidos is hiring for this role. Industry: Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology). Sector: 54.