Senior Full-Stack Engineer — Annotation Workspaces

Role overview Build a high-performance web workspace for 2D and 3D data annotation. The role combines interactive interface design, real-time collaboration, and performance engineering for very large video and point cloud datasets, with a focus on responsive controls and fast rendering.

Responsibilities - Design and build labeling interfaces using React, TypeScript, Three.js, and WebGL. - Implement collaborative editing with WebSockets and CRDT-based synchronization. - Create keyboard shortcuts and assisted annotation tools intended to improve annotator speed. - Profile and optimize memory use and frame rates when working with large video and point cloud streams.

Requirements - At least five years building complex interactive web applications with React, TypeScript, and WebGL or Canvas. - Strong attention to interface details, responsive ergonomics, and high-frame-rate rendering. - Experience with frontend build tools such as Vite or Rollup and REST or GraphQL APIs.

Benefits and work setup - Full-time senior role with remote work available worldwide. - Listed compensation of $140,000–$175,000 plus equity. - Home workstation stipend of $1,500, flexible paid leave, and wellness programs. - Scope to explore new interaction patterns for AI tools.