Senior UX Engineer – AI-Driven UI & Design Systems

Relativity ODA LLC; Kraków; Hybrid; PLN 180,000 - 280,000; Full time

Job summary

Relativity ODA LLC seeks a Senior UX Engineer to design, build, and refine React-based experiences for complex administrative workflows. You will partner with Designers, Product Managers, and Engineers to prototype rapidly using AI-native workflows and ship production-ready UI with strong accessibility and consistency.

The role emphasizes leading UX quality, defining standards for AI-generated UI, mentoring engineers, and shaping frontend craft across the organization.

Qualifications

• 5+ years of professional experience in UX engineering, front-end engineering, or design systems at scale.
• Hands-on experience with design systems, design tokens, and reusable component architecture.
• Working knowledge of WCAG AA and inclusive design, with practical accessibility testing.
• Fluency in Figma (components, variants, variables) and parity between design and code libraries.
• Experience with modern software development practices, including code review, testing, and CI/CD.
• Strong product, interaction, and visual judgment, with ability to explain UX trade-offs to teams.
• A passion for making complex workflows clear and efficient.

Responsibilities

• Design, build, and refine React-based admin experiences with usability, accessibility, and responsiveness baked in.
• Collaborate with Designers to explore options and co-own final experiences.
• Create high-fidelity prototypes for usability testing and iterate on findings.
• Own interaction details for data-dense screens, including keyboard navigation and accessibility.
• Define AI-generated UI standards and build tooling to enforce them automatically.
• Measure success via user outcomes, error rates, and time-to-complete in workflows.
• Build reusable patterns and components for shared platform use.
• Mentor engineers and elevate UX quality across teams.

Skills

UX engineering

Design systems

Figma

WCAG AA

CI/CD

React

AI-native tooling

Tools

React

TypeScript

HTML

CSS

Job description

Relativity ODA LLC seeks a Senior UX Engineer to design, build, and refine React-based experiences for complex administrative workflows. You will partner with Designers, Product Managers, and Engineers to prototype rapidly using AI-native workflows and ship production-ready UI with strong accessibility and consistency.

The role emphasizes leading UX quality, defining standards for AI-generated UI, mentoring engineers, and shaping frontend craft across the organization.