Facebook will be losing some key talent this week as Josh Williams and Tim Van Damme are both leaving the social network. Williams was the co-founder of Gowalla, a location-based check-in startup that Facebook acquired for their talent pool in 2011.

Upon joining the social network, he was put to work as a product manager for Pages, Locations and Events and most recently worked to help revamp the mobile Pages product.

Facebook confirmed Williams' departure in a statement to PCMag, noting that he has been a valuable member of the Facebook team and wishing him the best of luck with future endeavors. No official word yet on where Williams is headed although sources close to the situation told All Things D that he is planning to stay in the San Francisco area and start working at a new company.

Tim Van Damme is a former Gowalla designer, although he departed the company and joined Instagram before both outfits were acquired by Facebook. In a blog post on the subject, he said the past 18 months were some of the best of his life, both personally and professionally.

Van Damme said he had the opportunity to work with some of the brightest minds in the business but moving forward, he highlighted the desire to solve a different set of problems. As such, he will be joining Dropbox early next month after taking a short break to spend time with his family. He will be in good company as he joins two other former Facebook employees that jumped ship during the past year.