Senior UI/UX Developer for Federal Public Web Apps

International Executive Service Corps; Washington, Northern (District of Columbia, KY); Hybrid; USD 95,000 - 130,000; Full time

Job summary

NuAxis, a federal IT company, seeks a UI/UX Developer to design user-centered experiences for public-facing digital services. You will blend research with hands-on front-end work to ship accessible interfaces that work for diverse users.

This full-time role based in Washington, DC, involves owning usability studies, wireframes, prototypes, and responsive HTML/CSS/JS implementations within a CMS and USWDS framework, with strict WCAG 2.1 AA adherence and bilingual layouts.

Qualifications

• 5+ years of UX design and front-end development for public-facing or enterprise web apps.
• Proficiency with Figma and design system maintenance.
• Strong HTML5, CSS3 (Sass/Tailwind/Bootstrap), and JavaScript; implement designs.
• WCAG 2.1 AA / Section 508 accessible design and development practice.
• Human-centered design methods including usability testing.
• Experience designing within a CMS theming context (Drupal Twig or comparable).
• Responsive and mobile-first design across devices and assistive technologies.

Responsibilities

• Conduct human-centered design activities including usability testing.
• Produce wireframes, prototypes, and maintain a design system.
• Implement responsive, mobile-first front-end code integrated into CMS theme.
• Design and build complex multi-step forms with validation and recovery.
• Own accessibility from design through delivery — WCAG 2.1 AA, ARIA where required.
• Apply plain-language content design for low-literacy audiences and bilingual layouts.
• Validate designs with analytics, A/B tests, and usability findings.
• Partner with developers and testers to ensure implemented UI matches design intent.
• Implement designs using USWDS and align with federal patterns.
• Ensure cross-browser and cross-device compatibility, including screen readers.
• Design bilingual English/Spanish content layouts.

Skills

UX design

Front-end development

Figma

USWDS

Education

Bachelor's degree in Human-Computer Interaction, Design, Computer Science, or related field

Tools

Drupal Twig

React

Job description

NuAxis, a federal IT company, seeks a UI/UX Developer to design user-centered experiences for public-facing digital services. You will blend research with hands-on front-end work to ship accessible interfaces that work for diverse users.

This full-time role based in Washington, DC, involves owning usability studies, wireframes, prototypes, and responsive HTML/CSS/JS implementations within a CMS and USWDS framework, with strict WCAG 2.1 AA adherence and bilingual layouts.