After finishing his BA at Stanford, Hartley started working for Google. He lectured for Google.org and TechnoServe across East Africa. He also spent a year in India setting up the Google India team before moving to Facebook. He left the social media company to become a startup investor. Hartley has attracted attention for his position that technology is not the only discipline necessary at Silicon Valley. He noted that, although technology is uniform in the technology field, there are many CEOs and startup founders who have backgrounds in humanities, liberal arts, and social sciences. In an interview, he stated that these leaders, based on their performance over time, have the ability to take a step back, ask the right questions, and, empathize with the customer, making them more effective than a leader who merely has technological fluency. In his book, The Fuzzy and The Techie: Why the Liberal Arts Will Rule the Digital World, Hartley also argued that the business world depends on human touch that soft skills bring despite the increasing role technology plays in running business organizations. His book has been translated into six languages.According to him, technology and the liberals arts cannot be studied in isolation from each other. He spoke about his book at the World Bank annual meeting, USGIF's GEOINT Symposium, Google, IBM, Stanford University with Marissa Mayer, University of Washington, University of Arizona and Arkansas State University. The book was also selected as a book of the month by the Financial Times and was a finalist for the FT and McKinsey & Company's Bracken Bower Prize. He maintained that liberal arts degrees are crucial in applying emerging technologies to the creation of breakthrough innovations. Hartley also criticized fellow venture capitalists such as Marc Andreesen, who previously declared that the average graduate with a degree in English ends up "working in a shoe store”. He pushed back against Andreesen's position that a liberal arts education limits the dimensionality of one's thinking since it makes students less familiar with mathematical models and statistics. Hartley said that those with backgrounds in these fields "will develop ethics in artificial intelligence, question bias in algorithms and data and will bring contextual understanding to code.” Hartley is also a contributing writer to a number of publications, including the Financial Times, Forbes, andForeign Policy. He is managing partner of a venture capital firm, Two Culture Capital.
