https://techcrunch.com/2022/07/26/from-software-engineer-to-venture-capitalist-ex-a16z-partner-rex-salisbury-unveils-new-early-stage-fund/ > In 2015, Rex Salisbury was working as a software engineer at now-defunct mortgage startup Sindeo where he built out the back end for fully automated online mortgage pre-approval. > At the time, he was working for Andy Carra, who served as that company’s CTO after co-founding SoFi.