Orlando startup OneRail expects to add 100 jobs next year as it lands big-name clients

When tech firm OneRail in January moved into its 18,000-square-foot office in Orlando, it was a “leap of faith,” CEO Bill Catania said.  

That’s because the last-mile delivery software startup at the time employed 35 people, but the office at SouthPark Center could comfortably fit 100 workers. That said, OneRail wasn’t overzealous in moving into the office. In fact, the three-year-old company had been conservative.

Next year, OneRail plans to lease an additional 18,000 square feet across…