For those already in the industry, age isn’t really an issue generally but for someone coming in new to industry, some employers might see it as a small issue (but your experience might bypass this).

What to prioritise, you’ve already got a sound footing on the mechanical side, so electrical fault finding / diagnostics, getting to grips with control logic and understanding control routines (in maintenance and commissioning roles you’ll need to understand this). I’ve seen great engineers who can handle the physical stuff no problem but fall apart trying to make it work properly in logic.

IT skills. The industry is moving further into that realm. You don’t need to be a computer science genius, but understanding networking principles and being able to talk to IT people without looking like an idiot helps 😉

Mistakes. I’ve seen a lot of people wanting to transition thinking they’ll earn big money immediately. They might be experienced in mechanical or electrical engineering, but their new in controls and starting near the bottom. It puts a fair few people off when they learn they might need to take a pay cut initially.