Getting a venture job is about timing and your network. If you have the opportunity to join a venture firm, it's worth a try to see if you like it. There are a few times in your career when the door may be open to you:
- You went to business school for a career change post-product roles. In this case you can join a firm as an associate or principal.
- You started & exited your own company, in which case you can join as a partner.
- You were in an early leadership role at a hyper growth company, in which case you can join as a partner.

Age is also important, and an uncomfortable truth about timing that many people gloss over. It's easier to get a venture role when you're younger. Firms want to know that after 3-5 years you're good to generate returns for the next 15 years. The less of a risk you are, eg you had a huge outcome and are a draw for other founders, the older you can be when you start.

For the network, start meeting VCs, angel investors, and founders now. Help people out. Be good to the people you work with, it's not obvious who is going to start a successful company early in their career.