May 21, 2026
UI/UX Engineer
Senior • On-site
McLean, VA
Closure Technologies is seeking a UI/UX Engineer in McLean, VA who will conduct user research, lead UX strategy and design system development, and produce accessible, high-fidelity UI designs and prototypes for complex, high-visibility applications.
Clearance Requirement: TS/SCI with Polygraph
Key Responsibilities:
- User Research & Analysis
- Plan and conduct user research activities including interviews, usability testing, and feedback sessions with diverse user groups (e.g., analysts, SMEs, managers, data scientists).
- Analyze and synthesize research findings into actionable insights, personas, user journeys, and workflow maps.
- Document research findings and recommendations to support stakeholder understanding and buy-in, particularly in government settings.
- Apply ethical, secure, and compliant research practices appropriate for classified or sensitive environments.
- UX Strategy & Design Systems
- Lead UX and UI efforts for complex, high-visibility applications.
- Define, maintain, and evolve design systems and component libraries in collaboration with engineering teams.
- Establish consistent interaction patterns, workflows, and design standards across multiple applications.
- Create service blueprints and end-to-end experience maps to align cross-functional teams
- UI Design & Prototyping
- Develop interactive prototypes using tools such as Figma, Adobe XD, or similar, to explore concepts and validate user flows.
- Produce high-fidelity UI designs that are accessible, usable, and visually consistent.
- Ensure designs align with accessibility standards (e.g., WCAG) and applicable government design guidelines.
- Document interaction behaviors, design rationale, and micro-copy to support implementation
Required Qualifications:
- Active U.S. Government Security Clearance at the TS/SCI level with required polygraph.
- Bachelor's degree in Design, Human-Computer Interaction, Psychology, Computer Science, or a related field (or equivalent experience).
- Minimum 8 years of experience with a Bachelor's degree; or 7 years of experience with a Masters degree; or 6 years of experience with a Doctorate
- Demonstrated experience conducting UX research, analysis, and synthesis (not UI-only).
- Strong proficiency with design and prototyping tools such as Figma, Adobe XD, or equivalent.
- Experience collaborating closely with product managers and engineering teams.
- Ability to clearly articulate design decisions and research findings to stakeholders.
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