Lead User Experience (UX) Engineer, TS/SCI wPoly

The MITRE Corporation•McLean, VA

75d•$156,800 - $235,200•Onsite

About The Position

MITRE is seeking a Lead UX/UI Engineer to support high-priority ODNI initiatives requiring front-end web application development. This role requires an active TS/SCI with a Full Scope Polygraph. In this role, you will collaborate with experienced engineers, designers, researchers, and stakeholders to help frame problems, understand mission needs, and translate user insights into intuitive and effective solutions. You will contribute to stakeholder engagement activities—such as discussions, feedback sessions, and iterative design reviews—to ensure solutions align with user and mission objectives. MITRE is a not-for-profit corporation chartered to work for the public interest, with no commercial conflicts to influence what we do. The R&D centers we operate for the government create lasting impact in fields as diverse as cybersecurity, healthcare, aviation, defense, and enterprise transformation. We're making a difference every day—working for a safer, healthier, and more secure nation and world. Our workplace reflects our values. We offer competitive benefits, exceptional professional development opportunities for career growth, and a culture of innovation that embraces adaptability, collaboration, technical excellence, and people in partnership.

Requirements

Requires a minimum of 8 years of related experience with a Bachelor’s degree; or 6 years and a Master’s degree; or a PhD with relevant experience who can immediately contribute.
Bachelor’s degree in Computer Science, Software Engineering, HCI, UX Design, Human-Computer Interaction, or a related field.
Active TS//SCI clearance with a Full Scope Polygraph (required at time of hire).
Per the U.S. Government’s eligibility requirements, you must be a U.S Citizen to be considered for a security clearance.
Demonstrated experience as a Front-end web application developer with strong experience in UI/UX, interaction design, visual design, and usability.
Proficiency in front-end technologies such as JavaScript, HTML, CSS, D3, JavaScript Frameworks such as Angular, Vue, React, and/or similar libraries
Experience with UI-first rapid prototyping and development approaches.
Experience with CSS frameworks such as Tailwind or Material Design-based libraries.
Deep understanding of usability, accessibility, visual hierarchy, and user-centered design principles.
This position has an on-site requirement of 5 days a week on-site

Nice To Haves

Experience with geospatial application design (ESRI, open-source geospatial libraries).
Experience with modern JavaScript frameworks such as React, Vue, Angular and HTMx.
Experience developing web applications with different architectures including server-side rendering (SSR), single page applications (SPAs), and hybrid applications (interactive islands pattern).
Experience working within Linux-based environments, including command line and shell scripting.
Experience using version control systems (Git) and managing code reviews and releases.
Experience developing applications within Intelligence Community or ODNI environments.
Experience with AWS-managed services and cloud-native architectures.
Experience producing high-quality software documentation and design artifacts.
Familiarity with alternative JavaScript runtimes such as Bun or Deno.

Responsibilities

Serve as a technical subject matter expert responsible for designing, documenting, developing, and refining interactive, visually engaging, and responsive front-end web applications and interaction designs within highly sensitive Intelligence Community environments.
Support enterprise-level ODNI challenges related to technology modernization, data integration, analytic enablement, and secure collaboration.
Collaborate directly with ODNI sponsors and MITRE technical teams to translate complex mission workflows into clear, accessible, and mission-effective user interfaces that support analyst decision-making and reduce cognitive burden.
Work closely with human factors engineers, UX designers, researchers, project leaders, and sponsors to create software prototypes using current front-end technologies and best practices.
Lead or support development of enterprise-grade application front ends for a variety of mission needs including data visualization, workflow automation, analytics and geospatial displays.
Produce and maintain design-system components, interaction specifications, accessibility annotations, and developer-ready handoff documentation as necessary for sponsor engagement.
Ensure performance, usability, and accessibility of application designs.
Present designs and technical solutions clearly to both technical and non-technical stakeholders.
Mentor junior developers/designers and contribute to department-wide technical standards.