- What is your current runway and burn rate?
- How much funding has been raised at what evaluation and type(s) of equity?
- What % of the company are my shares?
- What is the founder(s) background and expertise?
If you're interviewing for a startup, don't focus on the product at all, that will change. Focus on the founders and core team. Those are the people that matter. Are they CEO/CTO/CMO/etc level material? Mature, focused, driven? Able to accept harsh truths and make tough calls? Have a strong vision for the future, but are pragmatic now? Can you see them being able to fire someone? Negotiate with other companies?
If they don't seem to have what it takes to go from a tiny startup to big company, you may want to reconsider.