User Interface Developer (Hybrid UX Engineer / Interactive Systems Developer)User Interface Developer (Hybrid UX Engineer / Interactive Systems Developer) Compensation: $150K–$250K base + equity (no bonus) Location: San Francisco, CA Hiring Target: 1 Work Policy: 5 days/week in-office Sponsorship: Visa transfers supported (not open to OPT) Stage: Seed-stage surgical robotics company | $14M raisedWe’re building autonomous surgical robots designed to dramatically shorten the learning curve for complex procedures. By combining robotics, ML, computer vision, and intuitive human-machine interfaces, we’re redefining how surgeons interact with advanced surgical systems.Our mission is bold and tangible: make high-quality surgical care more accessible worldwide by lowering the technical barrier for surgeons. We’re well-funded, commercially progressing, and building a team that blends creativity with deep technical execution.What’s in it for you? Work on real-world products that directly impact patient outcomes. Design and build interfaces that control surgical robots in real time. Join a fast-moving, well-funded seed-stage company with strong commercial traction. High autonomy and influence in a small frontend team (2 people). Competitive base salary plus meaningful equity. Relocation assistance ($5K–$10K). Opportunity to grow into technical leadership as the team scales.What will you do? Design and implement intuitive UI/UX for robotic control systems on touchscreen devices (iPads and similar). Build interactive 2D/3D visualizations and simulations using frameworks such as Three.js, Unity, Unreal, or Babylon.js. Gather user requirements directly from surgeons and clinical stakeholders. Conduct hands-on user research and translate findings into product decisions. Prototype rapidly and iterate on interfaces blending gaming, robotics, and real-time systems. Develop performant web applications in TypeScript using modern frontend frameworks. Integrate real-time data streams, sensor input, and control systems into interactive interfaces. Travel up to once per month to observe product use in surgical settings.What will you need? Hybrid profile: designer who can code OR engineer with strong UX instincts. Strong user research and requirements gathering experience. Hands-on experience shipping interactive products (internal tools acceptable; research prototypes alone are not sufficient).
Experience with game development or interactive 3D systems (Unity, Unreal, or similar). Strong TypeScript and modern frontend experience (React, Vue, Lit, Web Components, HTML/CSS). Familiarity with 2D/3D rendering libraries or engines (Three.js, Babylon.js, Godot, Pixi.js). Motion/animation experience. Comfort viewing live surgical procedures during site visits.Strongly preferred Human Machine Interface (HMI) or Human Robot Interface (HRI) experience. Robotics/device control interface design. Understanding of real-time systems, WebSockets, or streaming data.
Experience with physics engines (PhysX, Bullet, Box2D). 3D modeling experience. Mobile platform experience (React Native, SwiftUI, Flutter). Startup experience. CS degree.Must not have research-only focus with minimal shipped product. Pure designer with no ability to implement. Pure frontend engineer with no UX instincts.Role balance approximately 60% design / 40% coding (flexible depending on candidate strength). Portfolio must demonstrate both design thinking and implemented work.