Interaction Designer, HCI

The role

You will design detailed interaction models and mechanics for AI-driven flows. This role focuses on HCI interaction design to determine how users interact with proactive AI products.

What you will do

• Design detailed interaction models for AI-driven flows.
• Define interaction states for AI interfaces.
• Design human-in-the-loop controls.
• Create interaction patterns for delegation, approval, correction, escalation, reversibility, and recovery.
• Create detailed interaction specifications, annotated flows, and prototypes for engineering handoff.
• Work with product and ML teams to translate system capabilities and constraints into usable interaction patterns.
• Test interaction designs with real users.
• Contribute to a shared library of HCI interaction patterns.

Required qualifications

• Experience as an interaction designer or senior UX designer with strong interaction design depth.
• Ability to design at the micro level - states, transitions, edge cases, and failure handling.
• Strong prototyping skills in Figma or equivalent tools.
• Systematic thinking.
• Clear understanding of HCI principles: user control, transparency, feedback, and graceful recovery.
• Experience working closely with engineers to ensure interactions are implemented as designed.
• Comfort designing for systems where output is non-deterministic and behavior can vary across sessions.
• Strong judgment on when users should be guided, interrupted, asked for confirmation, or left alone.

Before you apply

• Submit a portfolio as part of the application process.
• Process includes 2 rounds of interviews and a design assessment.

About the company

ACTAI aims to build proactive applications for anyone in the world with minimal to no prompting. Their first application is an agent-first mobile communication app.