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 raised

Who Are We? Were 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, were 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. Were 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.