[FpUser]

Team or not makes no difference.

Front ends works like this - main app split into few smaller ones callable from a menu. Each sub-app is dynamically imported module (no need for building, code mutilation, direct dependency etc). Sub-apps in turn can consist from the other sub apps. Each can be worked on completely independently by different team member with virtually no interaction needed. Apps can share some approved libraries (like for graphics etc) and HTML components responsible for particular bits and pieces. Components and libs go into common pool. Once component is in a pool modifying behavior is punishable by death. Only internals. If change is breaking then simply new version is developed and deployed.

The whole thing is super scalable organization wise (nearly everything is decoupled) and resource wise as well since everything is loaded strictly on on need basis.