So, maybe let's not put the cart in front of the horse, focus on getting through the PhD first. You sound super motivated, but just to be sure, these are your two most important next steps:

1. If you can, find a good advisor/mentor. They'll introduce you to people and help you develop your research skills. TBH i don't know if the current PhD student job market is more of a "take what you can get" or a "lots of open positions" thing. But if you have several options on where to join, go with the ones that you feel like you can vibe with: they should have experience with publishing on top tier conferences, but also willing to help you succeed. use the search function, lots of advice on this reddit for what makes a good advisor.

2. Decide on what kind of research you want to do/pick a topic. Would you rather do applied research or theoretical stuff? There's a whole spectrum from maths or learning theory to foundational (e.g. RL or deep learning) to applied (computer vision, NLP, ...). Find a topic that excites you enough that you can dedicate several years to learning it and excelling in a subfield of it. The classes you'll be taking and the conversations with people at your lab/conferences should give you a flavor of what's out there. There's a bit of luck involved with picking a research direction that proves to be relevant, so advise from advisors/mentors helps a ton at that particual stage. One of the most important lesions you should learn in your PhD is how to find and approach good research questions.

Those are the two most important things to optimize your PhD success, which in turn optimizes hireability. In general your best bet at an industry research position is to do work that is meaningful enough that someone notices, in a field that the company (or a reasearch team with headcount) cares about. What that is depends on where you want to go and which field you want to work in. Definitely try to collaborate with industry, apply for internships or similar programs, or try to find other ways to collaborate while you're still in your phd. But like I said: I'd focus more on enjoying my PhD first, everything else should merely be a regularizer. Find a topic that interests you and the rest will follow.