Director of Platform Partnerships Ethan Beard became the latest high-level departure from Facebook, announcing his decision in a post on his Facebook page.

According to sister blog Inside Facebook, Beard joined the social network in April 2008 as director of business development, and he has headed worldwide developer relations and marketing since January 2009.

Beard joined a growing lists of top Facebook brass to leave the company since its initial public offering, following Director of Product Management Carl Sjogreen, Chief Technology Officer Bret Taylor, and Director of Corporate Communications and Public Policy Barry Schnitt.

Beard wrote in his post:

It is with mixed emotions that I’m letting you all know that I’ve decided to leave Facebook to seek my next adventure. For the past four-plus years, I’ve had the privilege of working with some of the most brilliant people on one of the most impactful products the world has ever seen. In addition, I’ve had the pleasure of helping build an ecosystem of incredible developers from innovative startups and established companies. I’m exceptionally proud of the team we’ve built and the work we’ve done, and I’m incredibly enthusiastic about the future of Facebook and platform and know that I’m leaving it in the good hands of people like Dan Rose, Justin Osofksy, Sean Ryan, Douglas Purdy, David Fisch, and Chris Daniels.

Saying goodbye is always hard, but I’m looking forward to taking some time off to recharge and re-energize before starting a new venture of my own. Thank you Mark Zuckerberg, Sheryl Sandberg, and the entire team at Facebook!

Readers: Is the wave of departures from Facebook over, or are more top executives heading for the door?