This post originally ran on Technically Philly. It is re-purposed here with permission, as part of a previously announced partnership.

Austin Lavin is excited.

During his phone conversation with Technically Philly we can nearly hear the 25-year-old smile through the phone. His excitement is well-founded.

Austin, along with his 19-year-old sister Celeste, just sold their first company: myfirstpaycheck.com.

The siblings founded the Ardmore-based Web site in 2007 when then-15-year-old Celeste Lavin began looking for her first job. The family noticed that, in an age where teenagers spend increasing amounts of time online, there were no career resources for teens.

The duo built a job board that also featured career resources for young people, a niche popular enough to attract the attention Phoenix-based Simple Employment Solutions.

We sat down with the Penn grad to ask him what it felt like to sell, his advice for others and when he will be buying his yacht.

Read the rest here.