UI/UX Engineer

SEMITIC LABS LLC
San Francisco, CA, United States
1 day ago
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Role details

Contract type
Permanent contract
Employment type
Full-time (> 32 hours)
Experience level
Expert
Experience required
5 years minimum
Working hours
Regular working hours
Job source

Tech stack

Artificial Intelligence Digital Asset Management Design of User Interfaces Next.js Responsive Web Design TypeScript User-Centered Design Web Application Frameworks Website Wireframe ReactJS Pixel Perfect Material UI
+4 more
Production Code Figma Web3.js Front End Software Development

Job description

We are looking for a UI/UX Engineer who is equally comfortable creating mock-ups, wireframes, and design assets as well as implementing them in production-ready code. You’ll collaborate closely with product managers, researchers, and engineers to translate complex ideas into intuitive, beautiful, and performant user interfaces.

This role is ideal for someone who can bridge design and engineering, bringing strong visual sensibilities while also writing clean, maintainable code in modern frontend frameworks.

Responsibilities

  • Design and prototype product interfaces through mock-ups, wireframes, and interactive prototypes.
  • Translate designs into pixel-perfect, accessible, and responsive implementations in React, Typescript, and Next.js.
  • Work closely with product and engineering teams to refine user journeys and ensure high usability.
  • Contribute to the overall design system, ensuring consistency across products and components.
  • Implement smooth animations, transitions, and interactions to improve user experience.
  • Continuously test, iterate, and improve the UI based on user feedback.
  • Stay up-to-date with best practices in UI/UX design, frontend engineering, and Web3 tooling.

Why Join Us

  • Work at the frontier of AI, cryptography, and decentralized networks.
  • Small, world-class team with high autonomy and impact.
  • Fully remote and flexible work environment.
  • Opportunity to shape the UI and UX of products that will be used across the Web3 ecosystem.

Requirements

  • 5+ years of experience in UI/Frontend Engineering, ideally with exposure to design responsibilities.
  • Proficiency in React, Typescript, and Next.js.
  • Strong design skills with experience in Figma, Sketch, or similar tools.
  • Ability to create wireframes, mock-ups, and prototypes that communicate design intent effectively.
  • Familiarity with building and maintaining design systems and reusable component libraries.
  • Strong understanding of responsive design, accessibility, and UX principles.
  • Attention to detail and ability to balance visual design with performance and usability.
  • Comfortable working in a remote, async-first environment with a globally distributed team.
  • Bonus: Interest or experience in Web3, cryptography, or decentralized protocols.

About the company

Semiotic Labs is an AI research and development company working at the intersection of machine learning, cryptography, and decentralized protocols. We are best known for our contributions to The Graph, where we’ve built open-source tools, incentive layers, and protocol infrastructure to help decentralized networks scale securely. More recently, our work has expanded into AI-to-AI payments, agent coordination, and transaction settlement layers that will enable the next generation of decentralized systems.

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Good distractions

Talks and stories from around this role — technically off-topic, practically not.

2:25 min

Architecting a multimodal storefront interface using Next.js

Daniel Madalitso Phiri · LIVE

5:04 min

Configuring the Figma MCP for local code generation

Perf + AI

4:30 min

Scaffolding pages and routing single-page applications with Next.js

Josh Goldberg · JS Congress

1:21 min

Exploring the target application for front end tests

Anna Mcdougall · JS Congress

10:09 min

Transitioning from graphic design to large scale frontend architecture

Erasmo Hernandez Erasmo Hernandez · World Congress 2026 Europe

1:26 min

Implementing custom component libraries with Figma

Philipp Kremer · World Congress 2023

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