You can’t merge the Pages during a deployment to the server. However, with the help of Skuid CLI (https://docs.skuid.com/latest/en/skuid/cli/), you can keep all of your Pages in a code repository (such as git).
By making changes within a shared repository, then deploying Pages from that repository, your engineers will be able to better coordinate with one another. You can take advantage of automatic conflict checks and merge tools which most repositories offer. You can also better track who last changed a Page and implement process controls around how and when changes are made.