> Markdown version of [/jobs/ext/2189462-senior-ui-ux-engineer](https://www.wearedevelopers.com/jobs/ext/2189462-senior-ui-ux-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior UI/UX Engineer - **Company:** Leidos, Inc. - **Location:** Tucson, AZ, United States - **Experience:** Expert - **Salary:** $107,900.0 - $195,050.0 - **Contract:** Permanent contract - **Skills:** HTML, JavaScript (Programming Language), Agile Methodology, Amazon Web Services, Component-Based Software Engineering, Systems Engineering, Confluence, JIRA, Cascading Style Sheets (CSS), Continuous Integration, Data Visualization, Django Web Framework, Design of User Interfaces, Python (Programming Language), Scrum Methodology, Responsive Web Design, Secure Coding, Selenium, Software Engineering, Systems Integration, TypeScript, User Interface Testing, User-Centered Design, Web Content Accessibility Guidelines, Web Applications, Cloud Platform System, ReactJS, Adobe XD, Cypress (Programming Language), Backend, Vue.js, Containerization, AngularJS, Gitlab-ci, Material UI, Kubernetes, Information Technology, Playwright, Figma, Front End Software Development, Restful APIs, Docker, Jenkins - **Published:** August 22, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9111530/senior-uiux-engineer ## About the Role Active Top Secret/SCI with the ability to successfully pass a Polygraph examination., * 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), * Experience supporting Intelligence Community, DoD, or other mission-focused government programs. * Experience working on applications involving complex data visualization, geospatial information, intelligence workflows, or mission systems. * Experience with React and TypeScript and modern front-end development tooling. * Experience developing or consuming RESTful APIs and integrating UI applications with backend services. * Experience with design systems, reusable component libraries, and UI standards. * Familiarity with Figma, Adobe XD, Sketch, or similar UX/UI design tools. * Experience with accessibility standards such as Section 508/WCAG. * Experience developing dashboards, data visualization, maps, or highly interactive mission interfaces. * Experience working within a cloud-based environment, particularly AWS. * Experience with automated UI testing and tools such as Playwright, Cypress, Selenium, or equivalent. * Experience mentoring engineers and providing technical leadership within a multidisciplinary Agile team. #Chinook ## Description * 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. ## Related Videos - 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