Summary
✨ AI‑Generated
Join a product-focused engineering team building a sophisticated browser-based 3D experience. You will own major parts of the interactive viewport and surrounding UI, with a strong emphasis on performance, precision, real-time collaboration, and polished user experience.
Highlights
Senior frontend role with substantial ownership of a sophisticated 3D browser experience, polished UI, performance, collaboration features, and technical direction.
Description
About Harth
Harth is the AI-powered workspace for architecture.
Architecture teams use it to model, visualise, render and collaborate in one browser-based tool, with nothing to install.
In Harth you can bring in models from Revit, ArchiCAD, SketchUp and IFC, place them on real satellite terrain next to existing buildings, and produce renders with leading AI models.
Teams work on the same scene together in real time and leave comments in 3D.
Architects can keep working the way they already do.
Harth just makes them faster.
The role
We're looking for a senior frontend engineer who loves both 3D on the web and polished product UI.
You'll own much of the experience architects spend their day in: the 3D viewport, the tools around it, and the collaborative layer that ties it together.
Performance, precision and feel all matter here, and you'll have real influence on the product and the technical direction.
What you'll do
Build and improve Harth's browser-based 3D environment: scene management, navigation, selection, measurement and editing toolsMake large architectural models (IFC, Revit, SketchUp and ArchiCAD imports) and terrain data load fast and render smoothlyBuild real-time multiplayer features such as presence, shared state and 3D-anchored commentsConnect the viewport to Harth's AI rendering and multi-agent workflows so results feel instantWork closely with design, backend and AI engineers, and with the architects who use Harth every daySet the frontend standards for code quality, testing and performance, and mentor others on the team
What you'll bring
6+ years building production web apps, including several senior-level years with modern TypeScript and React (or similar)Deep, hands-on experience with 3D on the web, such as Three.js, React Three Fiber, Babylon.js or raw WebGL/WebGPUA solid grasp of 3D fundamentals: transforms, cameras, materials and shaders, picking/raycasting, LOD and instancingExperience profiling and tuning rendering and memory performance in the browserA product mindset and good taste in UI and interaction designClear communication, and comfort working in a small team that moves fast
Nice to have
Experience with BIM/CAD formats (IFC, glTF, etc.) or geospatial and terrain dataReal-time collaboration tech such as CRDTs (Yjs, Automerge), WebSockets or WebRTCWriting custom shaders in GLSL or WGSL, e.g.
post-processing, custom materials or computeA background in architecture, AEC, games or creative tools
Why Harth
You'll shape a product that is changing how buildings get designedYou'll be an early, senior hire with real ownershipCompetitive salaryNice office (central CBD) and new equipment.
How to apply
Send your CV to info@harth.build (or apply through LinkedIn), along with links to 3D work you're proud of, such as demos, repos or shipped products.
A short note on why Harth interests you is a bonus.
Note we are an office first, with flexibility company, so you will need to be based in or willing to relocate to Christchurch for the role.
