>For the last two and a half years I've been developing computer vision algorithms for a proprietary embedded platform in C. Congratulations, you're a develope

>For the last two and a half years I've been developing computer vision algorithms for a proprietary embedded platform in C. Congratulations, you're a developer. That's already miles ahead of what your typical highly-paid web developer writing CRUD apps does for a living. To answer your question though, I suppose you're truly a developer when you have the mindset that you can learn anything required of you to get the job done. My advice: pick a language highly dissimilar from C, and deep-dive on it. Then do it again with another language. The confidence you'll gain in the process will be tremendous.