I will create a 3d web gis or map based on cesium js

I will provide you with the following through this gig.

 - Visualizing your spatial data.

  point, polyline, polygon, 3D model, 3D tile, terrain, aerial or satellite image.

 - Visualizing your spatial data in underground mode.

 - Drawing of polygon, polyline, point.

 - Measuring functions(for example, area, length)

 - Custom camera controlling(for example, First Person Camera(FPV)).

 - Spatial analysis functions(for example, viewshed, Terrain Cut Volume Calculation)

 - Development of editor(for example, 3D tile location editor, annotation editor)

 - Development of custom Mixin(plugin).

 - 3D surround video and billboard video.

 - Development of the custom 3d geometry.

 - Development of custom server for streaming your data(terrain, image tiles) with Nodejs or PHP.

 - Integrating CesiumJS app with WordPress or Larabel.

 - Integrating CesiumJS app with WebPack, React, Vue, Angular.

 - Providing the fast downloader of data hosted on Cesium ion.

 - Packaging 3d Tile to SQLite or mbTile.

 - Providing tiled data from your original spatial data(image, DEM, 3d Model)

- Extending and bug fixing preexisting Cesium Js app.