Today, after 3½ years at Yahoo! – the longest I have ever held a single job – I officially handed a resignation letter to my manager.

I’m not going to rant about what’s wrong with Yahoo! – no company is perfect, and mostly I feel incredibly grateful to have had the chance to work there. I got to build things that are seen, used, and hopefully enjoyed every day by a mind-numbing amount of users. That has been a very humbling experience.

For anyone who speaks HTML/CSS/JS/PHP and wants to learn about scalable web development, Yahoo! is probably one of the best places to do so. There is a great company culture in place, cutting edge technologies being worked on (YQL, YUI, Hadoop…), and while the food isn’t free, it really isn’t bad. And you do get free coffee, smart colleagues, massive amounts of bandwidth, and the freedom to put stickers all over your laptop! If you want to work at Yahoo!, do get in touch, and I will make sure your resume is on top of the pile.

So… most of my readers should already know by now (hi mom!), but here’s the news: in two weeks I shall begin working at Twitter. For those of you who don’t know what Twitter is, you should really get out from under that rock.

The office is located in downtown San Francisco. I’m going to learn me some Ruby and work on all things front-end, from the twitter.com site itself to, who knows, @anywhere.

I am so psyched about this opportunity, I’m having twouble spelling. If you too want to work at Twitter, hit @jointheflock or, if in Austin this week, you can stalk Twitter People.

In conclusion, if next year I don’t finally make it to SxSW, something is wrong.