Interaction Designer, HCI

About A1

There are over 5 billion users using basic applications today such as 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, organizing, 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 with over ~90%* reduced time.

Role

You will design the detailed mechanics of how users interact with A1 - the gestures, states, flows, and micro-decisions that determine whether an AI-driven product feels controlled or confusing. This role is focused on HCI interaction design: how users give input, receive feedback, supervise AI actions, correct mistakes, and maintain agency over AI-driven workflows. There are no established playbooks for interaction design in proactive AI products. You will help define new patterns from the ground up.

What You'll Be Doing

• Design detailed interaction models for AI-driven flows, including how users initiate, monitor, pause, correct, and complete multi-step tasks.
• Define interaction states for AI interfaces: idle, thinking, acting, waiting, uncertain, interrupted, failed, and recovered.
• Create human-in-the-loop controls - how users review AI decisions, override actions, and stay informed without micromanaging.
• 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 to identify where AI behavior creates confusion, distrust, or friction.
• Contribute to a shared library of HCI interaction patterns that can be reused across the product.

What You Will Need

• 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 - able to map complex AI behavior into coherent user-facing interaction logic.
• 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.

How We Work

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 the hands of our users a truly magical product.

Interview Process

• We expect candidates to submit a portfolio as part of the application process.
• If there appears to be a fit, we'll reach out to schedule 2 rounds of interviews and a design assessment.
• Applications are evaluated by our team members.
• Interviews will be conducted via virtual meetings and/or onsite.
• 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.