Three.js Developer (3D Map / Editor) Offline

We are looking for a Three.js developer to help us build a new map maker/editor for an existing 3D map project.

The map viewer is already implemented with Three.js and works well.
Previously, maps were created using a legacy Meteor.js tool, which was lost during a server migration and is no longer practical to restore.

Instead of reviving legacy tech, we want to build a modern, maintainable solution from scratch.

Client located in Norway. All work is done remotely.