Senior UI/UX Engineer: Design Mission-Critical Interfaces

Energy Jobline ZR; Aldie (VA); On-site; USD 108,000 - 195,000; Full time

Job summary

Leidos seeks a senior UI/IX engineering leader to design and deliver modern, mission-focused user interfaces for an Intelligence Community program. You will translate complex requirements into intuitive experiences, collaborate across product, UX, and engineering teams, and mentor engineers in an Agile SAFe environment.

The role requires active TS/SCI clearance, hands-on front-end excellence (HTML/CSS/JS/TypeScript), and experience with React/Angular/Vue.

Qualifications

• US citizenship is required per contract.
• Bachelor's degree in Computer Science, Software Engineering, or related field and 8-12 years of prior relevant experience or Master's with 6-10 years of prior relevant experience.
• Active Top Secret/SCI with the ability to successfully pass a Polygraph examination.
• Strong professional experience developing modern web-based user interfaces and user experiences.
• Proficiency with HTML, CSS, JavaScript/TypeScript, and Python.
• Experience with modern UI frameworks such as React, Angular, Vue.js, or Django.
• Demonstrated understanding of responsive design, component-based development, and modern front-end engineering practices.
• Experience translating complex requirements and user workflows into intuitive interface solutions.
• Experience working in an Agile/Scrum or SAFe environment.
• Strong communication and collaboration skills, with the ability to work effectively across technical and non-technical teams.
• Strong analytical and problem‑solving skills with a demonstrated ability to work through complex technical and user-experience challenges.
• Experience with CI/CD tools (GitLab CI, Jenkins) and agile collaboration tools (JIRA, Confluence).
• Familiarity with cloud environments such as AWS (C2S or GovCloud) and containerization technologies (Docker, Kubernetes)
• Understanding of secure coding practices and government system accreditation processes (e.g., RMF, STIGs)

Responsibilities

• Lead the design and engineering of modern, intuitive, and responsive user interfaces for mission-critical applications.
• Translate user needs, mission workflows, and functional requirements into effective UI/IX solutions.
• Collaborate with product owners, UX/UI designers, software engineers, systems engineers, and mission stakeholders throughout the development lifecycle.
• Develop reusable UI components, patterns, and design standards that promote consistency and maintainability across the program.
• Apply user-centered design principles to simplify complex workflows and improve overall usability.
• Build and refine interactive prototypes and proof-of-concept interfaces to validate concepts with stakeholders.
• Partner with software engineering teams to ensure designs are implemented accurately, efficiently, and with appropriate performance considerations.
• Evaluate existing interfaces and identify opportunities to improve usability, accessibility, responsiveness, and overall user experience.
• Participate in Agile ceremonies, PI Planning, backlog refinement, sprint planning, demonstrations, and retrospectives.
• Contribute to technical discussions and help establish UI/IX engineering best practices, standards, and patterns.
• Collaborate with test engineers to ensure UI functionality and user workflows are thoroughly validated.
• Provide technical mentorship and guidance to less-experienced engineers.
• Help drive continuous improvement of the program's UI/IX capabilities and development processes.

Job description

Leidos seeks a senior UI/IX engineering leader to design and deliver modern, mission-focused user interfaces for an Intelligence Community program. You will translate complex requirements into intuitive experiences, collaborate across product, UX, and engineering teams, and mentor engineers in an Agile SAFe environment.

The role requires active TS/SCI clearance, hands-on front-end excellence (HTML/CSS/JS/TypeScript), and experience with React/Angular/Vue.