First of all if you are looking at being an ETO or AV-IT Officer onboard a superyacht we need to look at what they mean and the responsibilities these positions have onboard. For most cases, these positions come under the engineering department, headed by the Chief Engineer.
Both these roles have now cemented a position onboard the larger yachts in the industry, generally speaking a 70m yacht will have an AVIT officer with the engineers looking after electrical systems whereas some 100m+ will have a team of 2x AVIT Officers and 2x ETOs onboard at the same time. I think this shows one; how much larger yachts are becoming and two; just how important owners gauge the need for this knowledge and position onboard.
The industry welcomes people from a strong IT background (e.g. Cisco and Microsoft) as well as people experienced in AV systems commonly found on yachts such as Crestron, Plex or Kaleidascape who have the transferable skills to manage and look after the yachts equipment successfully. Good people skills are also needed as there will be a lot of facetime with the owner, especially when things may not be working and you will have to explain to them why in a calm and simple manner. The reasons for which yacht owners are buying boats have somewhat shifted from just cruising around the Med to being floating offices and meeting rooms for some of the largest businesses in the world, this makes being an ETO or AVIT officer extremely important and sometimes daunting, however the benefits can be fantastic on the right yacht.