This position is closed and is no longer accepting applications.

Frontend Engineer (3D)

instalimb Sumida, Tokyo January 29 2026
  • 💴 ¥4.5M ~ ¥9M annually
  • 🏡
    Partially remote
  • 🌏
    Apply from abroad
    Relocate to Japan
  • 💬
    No Japanese required
    Business English
  • 🧪
    Intermediate to senior levels
    2+ years experience required

About instalimb

instalimb Sumida, Tokyo

We are a startup using 3D printing and AI to create fully customized, high-quality prosthetic and orthotic devices for the 90 million people worldwide who currently lack access. By digitizing the entire workflow, we’re building a scalable, global platform that delivers affordable prosthetics through both our own clinics and partner providers.

About the position

Our team is currently developing a cloud-based 3D CAD system that enables the entire design process for prosthetic devices to be completed online.

We are looking for engineers have experience with web-based 3D technologies to join us in driving this development project forward. Prior experience building CAD systems is not required.

Responsibilities

  • New development and feature enhancements for our cloud-based 3D CAD system for prosthetics and orthotics
  • UI design and implementation using React.js
  • Development of 3D modeling and rendering features using three.js
  • Collaboration with other engineering teams (AI team, backend team)
  • Participation in requirements definition, design reviews, and code reviews
  • Opportunity to contribute to the advanced functionality and optimization of our cloud CAD engine in the future

Requirements

  • 2+ years of experience with WebGL-based 3D libraries (e.g., three.js)
    • Alternatively, 2+ years of 3D game development or visualization experience
  • 1+ years of experience developing web applications using React.js or similar frameworks
  • Basic understanding of 3D graphics concepts (meshes, surfaces, coordinate transformations, textures, etc.)
  • Experience working in a team using Git or similar version control tools

Nice to haves

While not specifically required, tell us if you have any of the following.

  • Experience with development using any kind of CAD system (web-based or desktop). For example, OpenCascade, FreeCAD, Rhino/Grasshopper, Fusion 360 API, Siemens NX API, etc.
  • Knowledge of 3D modeling operations such as boolean operations, sweep, loft, offset, etc.
  • Experience developing desktop 3D engines or modelers using Rust, C++, Python, or similar languages
  • Experience designing high-performance computation using WebAssembly (WASM)
  • Experience designing 3D UX/UI with a focus on usability
  • Interest or knowledge in the medical device or prosthetics & orthotics domain

Compensation

¥4,500,000 ~ ¥9,000,000 annually.

Hiring Process

  1. 1

    Document Screening

  2. 2

    First Interview (Interview & Live Coding Session)

  3. 3

    Second Interview (CTO Interview)

  4. 4

    Final Interview (CEO Interview)

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