I started working on speech recognition over the phone, then worked for many years building billing systems for big and well-known companies. That was followed by a few years building and running an information web site and app for students. These were built from raw census data, crunching it into hopefully useful charts and other summaries, to help students make decisions about their future. I'm now doing ASP.NET web work on a product for HR departments to help keep their greater organisations happy and productive.