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Job · Mid-level

Freelance Frontend Engineer (all genders)

Frontend Developer • Mid-level • Remote • Full-time Germany Germany

GROPYUS is looking for a freelance Frontend Engineer to help build a React and Three.js based 3D parametric visualization and configuration platform for its automated building planning and production processes. The engagement runs 30-40 hours a week for 6-8 months, remotely from anywhere in the EU.

Responsibilities

  • Develop frontend experiences using React
  • Integrate interactive 3D visualization using Three.js and internal canvas-based libraries
  • Create intuitive workflows for interacting with complex building data and parametric models
  • Collaborate with backend services, occasionally contributing to API development
  • Work closely with engineers, product managers, and designers

Requirements

  • Strong experience with React and modern TypeScript-based frontend development
  • Experience building complex, interactive web applications with focus on usability and performance
  • Hands-on experience with Three.js or other 3D web technologies
  • Experience with HTML5 Canvas, WebGL, or similar visualization frameworks
  • Experience integrating frontend applications with GRPC APIs and backend services
  • Strong understanding of frontend architecture, state management, and performance optimization
  • Experience working with design systems and collaborating with product designers
  • Experience testing, debugging, and maintaining production-grade applications

Nice to have

  • Interest in 3D visualization, CAD-like applications, or parametric systems
  • Experience with Kotlin, Azure, or backend development

Soft skills

Curiosity, ownership, and a pragmatic mindsetTurning complex technical capabilities into seamless user experiences

About the company

GROPYUS is a technology-based construction company that manufactures multi-story residential buildings using prefabricated, industrially digitalized, sustainable timber construction methods.

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