Mobile/Web Developer – AI Spatial Products

Posted 97ds ago

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Job Description

Mobile / Web Developer for Sizeless, a YC-backed startup digitizing buildings. Focus on mobile capture experience and 3D visualization.

Responsibilities:

  • Build and improve the mobile capture experience (iOS), including: reliable video acquisition, smooth scanning flows, error handling and real-time user feedback
  • Contribute to processing and visualization pipelines, integrating reconstructed geometry and large spatial datasets
  • Develop and extend the web-based 3D Viewer using Three.js / WebGL
  • Implement interactive tools such as camera controls, measurements, and UX improvements
  • Collaborate closely with backend and algorithm teams to integrate new features into production
  • Ensure performance, usability, and reliability across devices
  • Take ownership of features through implementation, deployment, and iteration
  • (Optional) Collaborate with the AI / algorithm team to integrate new spatial or geometry-related capabilities into the product

Requirements:

  • Strong experience in mobile or web development (iOS / Swift and/or modern web frontend)
  • Solid frontend fundamentals and product-oriented thinking
  • Experience with or strong interest in 3D visualization (e.g. Three.js, WebGL, interactive 3D UIs)
  • Comfortable working with complex datasets and performance-sensitive applications
  • You enjoy ownership, fast iteration, and working in small, high-impact teams
  • Bonus: Experience with spatial applications, AR, or 3D viewers
  • Exposure to geometry, mapping, or visualization-heavy products

Benefits:

  • A budget for professional improvement (courses, conferences, books)
  • A budget for multi-benefits platform (meal tickets, private pension, etc.)
  • Premium private medical subscription with nationwide coverage
  • Budget for mastering English and German
  • All necessary equipment – up to you to decide what you prefer
  • Opportunities to learn and grow with us
  • Familial working atmosphere in an open-minded multinational team
  • Shape the future of digital twins and spatial data for buildings
  • Tackle unique technical challenges in computer vision, 3D reconstruction, and spatial intelligence