About usAether Biomedical is a medical robotics company building the future of bionic limbs. We develop advanced bionic prostheses that process biosignals to restore autonomy to amputees. We are looking for a UX/UI Engineer who is passionate about creating intuitive interfaces for our connected device platform.The RoleWe are looking for a Mid-to-Senior level Designer who also possesses Front-End development skills. This role sits between Design and Engineering: you prototype, validate, and partially implement interfaces, then hand off production-ready concepts to the IT team or submit code for review.Your Focus: 70% Design / 30% Development User Experience: Research and map complex user journeys for patients and clinicians, simplifying biosignal data into intuitive workflows. UI Design & Prototyping: Build high-fidelity, interactive prototypes in Figma that define the look and feel of our brand. Front-End Implementation: Use your knowledge of React.js, TypeScript, and CSS to build and maintain the UI component library and implement front-end views. AI-Assisted Implementation: Use tools such as Cursor, Claude, Juni (or similar) to generate, iterate, and refine UI code and prototypes. Collaborate: Partner with robotics engineers and back-end developers to ensure technical feasibility without compromising on UX. What You Bring Design First: Extensive experience (Mid/Senior) in UI/UX design, with a portfolio that shows a strong skill in turning complex systems into simple and beautiful workflows Development Skills: Comfortable (Junior/Mid level) writing clean, modern HTML, CSS and React.js. Tooling: Mastery of Figma and familiarity with Git and modern dev workflows. AI-Native Workflow: Practical experience using AI tools for coding, refactoring, prototyping, and accelerating delivery. Quality Mindset: An eye for detail that ensures our medical applications are accessible, reliable, and high-performing. Communication: Fluent English and the ability to articulate design decisions to both technical and non-technical stakeholders. Why Aether? Meaningful Work: Your designs will directly impact how people interact with their bionic limbs. Creative Freedom: Lead the design direction of a fast-growing medical robotics startup. Environment: A friendly, flexible startup culture in the center of Poznań (Mostowa) with hybrid work options (3 days remote per week) Benefits: Multisport and medical package