Senior UI/UX Developer for Public-Facing Digital Services

NuAxis Innovations; Washington (District of Columbia); On-site; USD 100,000 - 150,000; Full time

Job summary

NuAxis Innovations is seeking a UI/UX Developer for a full-time position to design and build user experiences for high-volume public-facing digital services. You will blend human-centered research with hands-on front-end implementation, shaping accessible, responsive interfaces that ship rather than sit in a design tool.

You will lead design systems, implement HTML5/CSS3/JavaScript, and ensure WCAG 2.1 AA compliance across browsers and devices, including bilingual layouts.

Qualifications

• 5+ years UX design and front-end development for public-facing or enterprise web apps.
• Proficient with Figma and design system maintenance.
• Strong hands-on HTML5, CSS3 (Sass/Tailwind/Bootstrap) and JavaScript; implement your own designs.
• Demonstrated WCAG 2.1 AA / Section 508 accessible design and development practice.
• Human-centered design methods including moderated usability testing.
• Experience designing within a CMS theming context (Drupal Twig or comparable).
• Responsive and mobile-first design fluency across devices and assistive techs.
• Hands-on USWDS implementation experience and strong understanding of federal digital-service design standards.

Responsibilities

• Conduct human-centered design activities: user research + usability testing.
• Produce wireframes, interactive prototypes, and high-fidelity designs; maintain a design system and component library.
• Implement responsive, mobile-first front-end code integrated into the CMS theme layer.
• Design and build complex multi-step forms with progressive disclosure, inline validation, save-and-resume, and clear error recovery.
• Own accessibility from design through delivery - WCAG 2.1 AA, semantic markup, keyboard navigation, ARIA where required.
• Apply plain-language and content design principles for low-literacy and limited-English-proficiency audiences, including bilingual layouts.
• Validate designs with analytics, A/B testing, and usability findings; iterate on evidence.
• Partner with developers and testers to ensure implemented UI matches design intent and passes accessibility validation.
• Implement designs using USWDS and coordinate with DOL Digital Transformation/SORT stakeholders; ensure consistency with DOL.gov patterns and 21st Century IDEA.
• Validate designs across current and previous major browsers, desktop/tablet/mobile form factors, keyboard-only interaction, screen readers, and responsive breakpoints.
• Design for bilingual English/Spanish content, complex public forms, real-time validation, clear error recovery, and low-literacy/limited-English-proficiency users.

Skills

UX design

Front-end development

Usability testing

Accessibility (WCAG)

Responsive design

Design systems

USWDS familiarity

Factual design coordination

Education

Bachelor's degree in HCI/Design/CS

Tools

Figma

Sass

Tailwind

Bootstrap

USWDS

Drupal Twig

React

Vue

Job description

NuAxis Innovations is seeking a UI/UX Developer for a full-time position to design and build user experiences for high-volume public-facing digital services. You will blend human-centered research with hands-on front-end implementation, shaping accessible, responsive interfaces that ship rather than sit in a design tool.

You will lead design systems, implement HTML5/CSS3/JavaScript, and ensure WCAG 2.1 AA compliance across browsers and devices, including bilingual layouts.