Users with write access to the repositories can perform most of the actions that normally require an Admin.

Codecov itself possesses no internal ACL or permissioning system. User access rights are taken directly from our integration with the repository provider. Anyone with Admin rights at your repo provider Org will have the same permissions on your Codecov account. 

For example, on Github, you can view your organization's Admins by browsing to the following link (replace "org" with your organization's username):<org>/people?query=role%3Aowner

Besides users have Admin right in your repo provider, Codecov Admins can also be manually added in your Codecov dashboard:<org>