After two-and-a-half years in marketing at Yahoo!, Ryan Kuder was among the 1,000 let go in the portal’s first round of layoffs.

He teamed up with Colombian entrepreneur Jonathan Tarud over the summer to work on a local social network called Neighborsville.

But by the fall, when it was clear funding would be scarce, Kuder asked himself: “What’s our shortest route to cash so we don’t starve and can continue to pay the mortgage?”

His answer was Koombea, Tarud’s Web development startup.

With a team of seven engineers based in Colombia, the firm has landed three clients and built several Web apps, including the Purple People Collective, a job board for the recently laid off.

Kuder hopes to generate enough cash from the business to fund Neighborsville.

Photo by BusinessWeek.