I really don't see how. Yes there is life at undersea volcanic vents on Earth, but they don't live like in the vent itself. It's where the temperature gets lower there is life.

As far as I know nothing can survive boiling temperatures for long and Venus has been way above boiling for millions of years. There are extremophiles that survive a little above boiling, but 400+ degrees I really don't see how.

There is a chance in the atmosphere where there are parts with reasonable temperatures and pressures. But there is also a lot of acids floating around, which is sorta incompatible with life. If some photosynthetic life was present in the atmosphere, floating around and living on sunlight, we would have seen it by now. There would be seasonal blooms, similar to plankton in the oceans on Earth.

It's cool to think about and I remember reading old sci-fi with Venus as a forest planet, since it's so like Earth in a lot of ways. But in reality it's dead dead.

Same for Mars I feel like. We might find indications life once lived there, which would be a huge deal. But as far as actual current life, I think chances are slim to none.