UX Engineer, HCI

About the Company

A1 is building a proactive smart assistant for everyday users to bring intelligence to conversations, errands, organizing, and workflows. The mission is to create AI-native applications that handle multi-step reasoning and real-world task completion with high reliability.

Responsibilities

• Build and prototype AI-native product interfaces across web and mobile
• Create functional prototypes of new HCI interaction models, including streaming responses and multi-step task flows
• Translate design concepts into working code with high attention to usability, responsiveness, and motion
• Experiment with UI patterns that communicate progress, uncertainty, confidence, and recovery
• Build interfaces that allow users to supervise and redirect AI behavior
• Work closely with product, design, and ML teams to validate interaction ideas
• Contribute to frontend architecture and reusable UI components
• Identify and fix usability, performance, and state management issues

Requirements

• Strong frontend engineering skills in React, TypeScript, or equivalent
• Experience building interaction-heavy or experimental interfaces
• Strong product and UX instincts
• Ability to prototype rapidly in ambiguous environments
• Understanding of animation, responsiveness, frontend architecture, and UI performance
• Interest in HCI interfaces and designing for trust, control, and transparency
• Comfort working at the boundary of design and engineering
• Ability to move fast while maintaining usability