To be fair, I actually have around 7 years of experience total, not just the 3 I've worked full-time. It's just that most of those years I was working as a freelancer. My first employer initially thought that the freelance work didn't make me worthy of being more than a junior, and back then, I didn't really know enough about working at a company to disagree.

In those 7 years, I've built up and shipped quite a few products, so I definitely feel like I can say I have more than 2 years of useful experience. But don't feel too offended, I don't really consider myself to be senior - it's just a title that my employers offer me. I definitely know I still have a long way to go before I'm a good developer.