UI/UX Developer for Mission-Critical Web Apps | TS/SCI

Leidos; Gaithersburg (MD); On-site; USD 87,000 - 157,000; Full time

Job summary

Leidos is seeking a Mid-Level UI/UX Developer to design and implement intuitive interfaces for mission-critical applications. You will bridge design and engineering, delivering production-ready front-end solutions that are accessible and high-performing.

This role requires translating complex workflows, collaborating with backend engineers and product teams, and contributing to design systems while supporting national security objectives.

Qualifications

• Proven experience designing user-centered interfaces for complex applications.
• Strong frontend development skills using JavaScript, HTML, CSS.
• Experience with modern UI frameworks (React, Angular).
• Familiarity with design systems, accessibility, and usability best practices.

Responsibilities

• Design and develop intuitive, responsive web interfaces for mission-critical applications.
• Translate complex workflows into simple, efficient user experiences.
• Build and maintain front-end components using React, Angular, or similar.
• Ensure accessibility and usability standards are met across products.
• Contribute to design systems and style guides; collaborate across teams.

Skills

React

Angular

JavaScript

HTML

CSS

UX principles

Usability

Performance optimization

Linux

Collaboration

Education

Bachelor's degree in Computer Science or Software Engineering

Master’s degree

Tools

Figma

Sketch

Adobe XD

Grafana

Job description

Leidos is seeking a Mid-Level UI/UX Developer to design and implement intuitive interfaces for mission-critical applications. You will bridge design and engineering, delivering production-ready front-end solutions that are accessible and high-performing.

This role requires translating complex workflows, collaborating with backend engineers and product teams, and contributing to design systems while supporting national security objectives.