Wordpress
Wordpress is a tool I've worked with on and off over the years, though not so much in the last few. Kingswood Anglican, a freelance project I worked on, involved building a new frontend ontop of an existing Wordpress installation. This included setting up and configuring plugins for REST APIs, PDF viewing, custom forms and other features as required by the client.
Despite all this, full management of Wordpress and plugins would still be the largest learning curve in the list of skills outlined for this position. Whilst I've worked with it a lot, as I stated previously I've not worked much with it in the last 3-5 years and would need to learn of all the changes and updates done to Wordpress over these few years to be able to effectively work and produce code for the platform.
That being said, I've done it before and it can be done again.