Ux Ui Designer jobs in Brazil

We're seeking for a Senior UX / UI Engineer in Brazil - 100% remote

Type : 6-Month Contract (with strong potential for extension)

Location : Remote

We’re looking for a Senior UX / UI Engineer to help build and improve internal web-based user interfaces for our Site Reliability Engineering teams. This role is ideal for a front-end engineer who loves to get hands-on with React and enjoys improving user workflows, not just coding layouts.

You’ll be working on existing internal React applications (built by engineers, for engineers) — streamlining them, improving usability, and helping implement new functionality.

Enhance and reorganize an existing internal React app to improve usability and maintainability.

Build and implement intuitive web-based interfaces used daily by internal engineering teams.

Collaborate with engineers and stakeholders to identify UX pain points and deliver better workflows.

Bring a strong design sensibility to UI decisions, even if design is not your primary focus.

• React expertise — deep hands‑on experience building and improving production React applications.
• Experience delivering solutions using multiple front‑end languages or frameworks (you’ve picked up a “second and third language”).
• HTMX experience (required).
• Lit experience is a plus (not mandatory).
• Experience implementing and improving internal web‑based applications.
• Comfort working in the UX layer — improving workflow, usability, and user experience (not just layouts).

• Some UX design experience — wireframing, talking to users, or journey mapping.

Familiarity with internal tools or applications (preferred over public‑facing apps).

• Go‑getter mentality — eager to learn, fix, and improve from day one.
• Curious and proactive — someone who would say, “I saw the issues in your React app, fixed them, and I’m ready to move forward.”
• Focused on delivering impact to end users — able to articulate what you built, why it mattered, and how it improved the experience.