A lot of people still get paid to sit in offices and do repetitive tasks. In recent years, however, employers have been pushing harder to find ways to outsource that work to machines. Venture and growth investors are doing a lot to speed up the rise of these worker-bots. So far this year, they've poured hundreds of millions into developers of robotic process automation technology, the term to describe software used for performing a series of tasks previously carried out by humans. Sequoia Capital and Alphabet's CapitalG led the financing, which brings total capital raised by the 13-year-old company to more than $400 million, with a most recent valuation of $3 billion.