Senior Software Engineer (Unity WebGL)

Remotestar; Cambourne; Remote; GBP 50,000 - 75,000; Full time

Job summary

Remotestar is developing a next-gen 3D web engine for orthopaedic devices. This role involves leading technical decisions and implementing a browser-based platform utilizing Unity WebGL. The ideal candidate will have proven expertise in JavaScript and C++ integration, contributing to real-time 3D visualisation for clinical users.

Qualifications

• Proven experience with Unity WebGL builds and plugin integration workflows.
• Hands-on experience integrating C++ or Rust libraries into WebAssembly using Emscripten.
• Strong understanding of WebGL and browser-based 3D rendering constraints.

Responsibilities

• Lead architectural decisions for a browser-native 3D platform.
• Define and implement the web technology stack.
• Collaborate with product teams to translate clinical requirements.

Skills

Unity WebGL builds

JavaScript

C++

TypeScript

Emscripten

WebGL

Performance optimization

Memory management

Vue.js

Tools

Vite

Webpack

Rollup

Job description

Location: Remote
Contract Type:Full time

About the Project

We are building a next-generation 3D web engine to support the design and customization of orthopaedic devices, transitioning from a Unity-based desktop application to a collaborative, browser-based platform. The goal is to enable real-time 3D visualisation, customisation, and streamlined data workflows for clinical users.

Key Responsibilities

• Lead architectural decisions and R&D phases of a browser-native 3D platform built on top of Unity WebGL
• Define and implement the web technology stack, including Unity WebGL, WebAssembly modules, and JavaScript interoperability
• Export existing Unity desktop functionality to WebGL, integrating C++ logic using Emscripten
• Develop a web interface that integrates with the Unity canvas (e.g., via Vue.js or a comparable frontend framework)
• Collaborate with product teams to translate clinical requirements into performant 3D tools
• Work with backend engineers on real-time collaboration features, including data streaming and session sync
• Participate in agile team processes, including weekly stand-ups, sprint planning, and stakeholder reviews

Technical Requirements

• Proven experience with Unity WebGL builds and plugin integration workflows
• Hands-on experience compiling and integrating C++ or Rust libraries into WebAssembly using Emscripten
• Proficiency in JavaScript, TypeScript, and modern frontend tools such as Vite, Webpack, or Rollup
• Strong understanding of WebGL and browser-based 3D rendering constraints
• Experience working with 3D file formats such as STL, OBJ, or 3MF
• Knowledge of performance optimization and memory management in browser environments
• Familiarity with Unity’s interaction system and how to extend or interface with it in a WebGL context

Nice to Have

• Experience with Vue.js or another modern reactive frontend framework
• Background in medical software or regulated industries (HIPAA, FDA, etc.)
• Exposure to collaborative multi-user environments, such as CRDT-based or real-time sync architectures
• Familiarity with cloud-based processing workflows (AWS, Azure)
• Experience with mesh processing libraries such as libigl, CGAL, or pmp in WASM pipelines