bjakcareer - UX Engineer, HCI

• 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. • 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. • 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