Frontend Engineer (AI)

TL;DR

Frontend Engineer (AI): Building and prototyping AI-native product interfaces for a proactive smart assistant with an accent on HCI and interaction models. Focus on developing streaming responses, multi-step task flows, and interfaces that make AI behavior understandable and controllable.

Location: Hybrid (Seoul, Korea)

Company

A1 is building a proactive AI smart assistant for everyday users to bring intelligence to conversations, errands, organising and workflows.

What you will do

• Build and prototype AI-native product interfaces across web and mobile.
• Create functional prototypes of new HCI interaction models, including streaming responses and real-time feedback loops.
• Translate design concepts into responsive code with high attention to usability and motion.
• Experiment with UI patterns to communicate AI progress, uncertainty, confidence, and recovery.
• Develop interfaces that allow users to supervise and redirect AI behavior.
• Collaborate with product, design, and ML teams to validate and ship interaction ideas.

Requirements

• Strong frontend engineering skills in React and TypeScript.
• Experience building interaction-heavy or experimental interfaces.
• Strong product and UX instincts to identify and fix usability issues.
• Ability to prototype rapidly in ambiguous environments with incomplete specs.
• Understanding of animation, frontend architecture, and UI performance.
• Interest in HCI interfaces and designing for trust, control, and transparency.

Culture & Benefits

• High talent density, hands-on team environment.
• Collaborative decision-making process with rapid execution speed.
• Balanced approach between shipping high-quality work and continuous learning.
• Opportunity to build a world-class, "magical" AI product with a small, elite team.

Hiring process

• Portfolio submission (required for design-oriented candidates).
• Two rounds of interviews.
• Design assessment.