UI/UX Engineer at Bjak | KOR | Rezi

UI/UX Engineer at Bjak

UI/UX Engineer

Bjak · KOR

4 days ago

UI/UX Engineer

Bjak · KOR

4 days ago
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About the Role

You will sit at the intersection of design and engineering, building the AI interfaces that users actually interact with. This role is focused on HCI - building interfaces that make AI behavior understandable, controllable, and useful in real workflows.

Responsibilities

  • Build and prototype AI-native product interfaces across web and mobile.
  • Create functional prototypes of new HCI interaction models, including streaming responses, multi-step task flows, real-time feedback loops, and system state visibility.
  • Translate design concepts into working code with high attention to usability, responsiveness, and motion.
  • Experiment with UI patterns that show progress, uncertainty, confidence, failure, and recovery clearly to users.
  • Build interfaces that let users supervise, correct, and redirect AI behavior without micromanaging the system.
  • Work closely with product, design, and ML teams to validate interaction ideas quickly.
  • Contribute to frontend architecture and reusable UI components for AI product surfaces.
  • Identify and fix usability, performance, and state management issues in AI-driven interfaces.

Requirements

  • Strong frontend engineering skills in React, TypeScript, or equivalent.
  • Experience building interaction-heavy or experimental interfaces.
  • Strong product and UX instincts - you can tell when something is unclear or broken from a user's perspective.
  • Ability to prototype rapidly in ambiguous environments with incomplete specs.
  • Understanding of animation, responsiveness, frontend architecture, and UI performance.
  • Interest in HCI interfaces and how to design for trust, control, transparency, and recovery.
  • Comfort working at the boundary of design and engineering without clear handoffs.
  • Ability to move fast while keeping the user experience clear and usable.
  • For design roles, candidates are expected to submit a portfolio as part of the application process.
  • Interviews will be conducted via virtual meetings and/or onsite.

Skills

  • React
  • TypeScript
  • Animation
  • Responsiveness
  • Frontend architecture
  • UI performance
  • HCI interfaces

About the Company

  • There are over 5 billion users using basic applications today such email, notes, tasks that are not AI-native.
  • Our mission is to build a proactive smart assistant for everyday users to bring intelligence to conversations, errands, organising and workflows, with minimal prompting.
  • Our product focuses on achieving high reliability for long-running workflows, persistent context, and real-world task completion.
  • The system must handle multi-step reasoning, interact with external tools, and remain reliable despite non-deterministic model behavior.
  • Our objective is to help users complete tasks daily enjoyable with over ~90%* reduced time.
  • The best products today in the world were built by small, world class teams.
  • We are a high talent density and hands-on team.
  • We make decisions collectively, move at rapid speed, striking a balance between shipping high quality work and learning.
  • Joining our team requires the ability to bring structure, exercise judgment, and execute independently.
  • Our goal is to put in hands of our users a truly magical product.
  • We value transparency and efficiency, so expect a prompt decision.
  • If you've demonstrated the exceptional skills and mindset we're looking for, we'll extend an offer to join us.
  • This isn't just a job offer; it's an invitation to be part of a team that's bringing AI to have practical benefits to billions globally.