You are not the first developer in the startup, they able to offer you a decent package means, so they are funded. Both are jobs if you think you can be a ent

You are not the first developer in the startup, they able to offer you a decent package means, so they are funded. Both are jobs if you think you can be a entrepreneur then choose the startup you can know complete process and how to get funded for your idea. If you think you may not startup in next 2 years, take the well paying job and save for future