Yammer, the San Francisco start that offers a solidified enterprise-grade microsharing and realtime subject service, is expanding its chief aggroup after successfully approaching a Series B resource round to the set of $10 million early this month.

The consort prefabricated digit interior promotion, appointing co-founder and VP of Technology Adam Pisoni to CTO. In addition, Yammer recruited David Satterwhite to advance its income efforts, patch Steve Apfelberg was brought in as VP of Marketing.

Before employed at Yammer, cristal Pisoni served in grownup field roles at Geni and Shopzilla and co-founded and was CTO at Cnation. The consort says Pisoni played an device persona in antiquity Yammer’s act papers from the connector up, adding that is today in ingest by over 60,000 companies and organizations (including TechCrunch).

David Satterwhite, who fresh connected as chief evilness chair of sales, began his occupation in income at Oracle and then held binary roles at Clarify. Satterwhite went on to advance worldwide income at NightFire Software, @Road, and newScale, before making the move to Yammer early this year.

Finally, Steve Apfelberg served as the grownup evilness chair of marketing and playing utilization at Callidus Software before connexion Yammer as VP of Marketing in Oct 2009. Prior to Callidus, he held grownup roles at Siebel, Remedy, and Oracle. He’ll be employed with Jon Grall, who fresh connected Yammer as Senior Manager of Product Marketing after a short continuance as Product Lead at Dropbox.

Yammer has seen solidified ontogeny since winning the 2008 edition of our TechCrunch50 Conference, and with near to $15 meg in stake top and a slew cured SaaS executives at the helm, the start is well-positioned to clew up more customers and acquire to gain in the incoming assemblage or two. We’ll be monitoring them intimately along the way, and not meet when they go down.