What it a main difference between junior and senior product designer role?

People might say 'Years of Experience' but I don't consider it to be a good metric. For senior role, being good at core skills goes without saying. Alongside, one needs to be good at their soft skills and leadership to oversee things. Overall, it depends on the exposure one has got.

The main difference is the level of experience and responsibility. Senior product designers typically have more extensive experience, lead projects, mentor junior designers, and contribute to higher-level strategic decisions.