Ask HN: Do you have good tips for tech interviews?

I am starting the tech team in my company, and I will be leading the tech interviews. I was going for some Leetcode based exercise + some theoretical questions + experience debrief. I was wondering if someone had good tips to share with me? To give you the context: I used to manage larger teams where it mattered less when we made a hiring mistake. Now I am in a start-up, and I am much more worried about the selection process because we are building the team from scratch.