Question: Amit Singhal is the former senior vice president of engineering at what company under CEO Travis Kalanick?

full_context: Document 1: Craig Newmark: Craig Alexander Newmark (born December 6, 1952) is an American Internet entrepreneur best known for being the founder of the San Francisco-based international website Craigslist.
Document 2: Red Swoosh: Red Swoosh was a peer-to-peer file sharing company founded by Travis Kalanick and Michael Todd in 2001 and acquired by Akamai Technologies in 2007. The Red Swoosh technology included a centralized directory that indexed online clients and caches. The Red Swoosh client is a peer to peer networking client from Akamai Technologies that downloads and sideloads video multicasts from websites that support the Red Swoosh technology. The Red Swoosh peercasting tool is a browser extension that caches data, reflecting and sharing files delivered through the "Swoosh network" or Distributed Network.
Document 3: John Krafcik: John Krafcik (born September 18, 1961) is the chief executive officer (CEO) of Waymo Inc. Krafcik was the former president of True Car Inc. and President and CEO of Hyundai Motor America. His current position was announced In December 2016, after Google separated its self-driving car project and transitioned it into a new company called Waymo, which is now housed under Google’s parent company Alphabet.
Document 4: ITA Software: ITA Software is a travel industry software division of Google, formerly an independent company, in Cambridge, Massachusetts. The company was founded by Jeremy Wertheimer, a computer scientist from the MIT Artificial Intelligence Laboratory and Cooper Union, with his partner Richard Aiken in 1996. On July 1, 2010 ITA agreed to be acquired by Google. On April 8, 2011, the US Department of Justice approved the buyout. As part of the agreement, Google must license ITA software to other websites for five years.
Document 5: Sumon K Chakrabarti: Sumon K Chakrabarti is a former multi-media journalist. Twice nominated as India's best journalist, he quit his 20-year career to follow his life-long passion - Football. In 2016, he launched his startup FootTheBall, which is creating the first social network for football fans globally. It became the top-15 startups in the UberPitch India 2016. At the finals of the event, Uber CEO Travis Kalanick visited New Delhi to meet the team. Over 5,500 startups across 28 cities in India had applied for the UberPitch 2016 challenge
Document 6: Vik Singh: Vik Singh is the CEO and co-founder of Infer, a leading predictive sales and marketing platform. Vik was previously an American Entrepreneur In Residence at Sutter Hill Ventures. Previously, Vik helped create and architect Yahoo! Search BOSS, an open web search platform. As of April 2009, the number of queries issued through BOSS surpassed the search traffic on Ask and Facebook combined.
Document 7: Yuval Ben-Itzhak: Yuval Ben-Itzhak is an executive and entrepreneur. He received a number of honors and public recognition for his work as a Chief Technology Officer throughout his career. Ben-Itzhak has been selected as the 25 most influencing CTO by Infoworld, 40 Innovative IT People To Watch by Computerworld, and 2017 Chief Technology Officer of the Year by GeekTime. He was the Chief Technology Officer at AVG and was part of the leadership team that took AVG through its initial public offering on the New York Stock Exchange in 2012. He was the Chief Technology Officer at Outbrain until 2017, and now is the Chief Executive Officer at Socialbakers.
Document 8: Elon Musk: Elon Reeve Musk ( ; born June 28, 1971) is a South African-born Canadian American business magnate, investor, engineer, and inventor.
Document 9: Vikas Gupta: Vikas Gupta is an Indian American internet entrepreneur. He is known for having founded Jambool, an online company that was acquiredby Google in August 2010. Gupta has also joined Google as the Head of Consumer Payments after the acquisition. Prior to founding Jambool, Gupta worked at Amazon.com, where he led the payments and web services groups. His newest venture is Play-i,which he started in November 2012.
Document 10: Robin Chase: Robin Chase is a transportation entrepreneur. She is co-founder and former CEO of Zipcar. She is also the founder and former CEO of Buzzcar, a peer-to-peer car sharing service, acquired by Drivy. She also started the defunct GoLoco.org, a ride-sharing company. She is co-founder and Executive Chairman of Veniam, a vehicle network communications company. She authored the book, Peers Inc: How People and Platforms are Inventing the Collaborative Economy and Reinventing Capitalism.
Document 11: Mark Cuban: Mark Cuban (born July 31, 1958) is an American businessman, investor, author, television personality, and philanthropist. He is the owner of the NBA's Dallas Mavericks, co-owner of 2929 Entertainment and chairman of the AXS TV. He is also one of the main "shark" investors on the ABC reality television series, "Shark Tank". In 2011, Cuban wrote an e-book, "How to Win at the Sport of Business", in which he chronicles his experiences in business and sports.
Document 12: Amit Singhal: Amitabh Kumar "Amit" Singhal (born September 1968) is the former senior vice president of engineering at Uber, a position he took up in 2017, reporting to CEO Travis Kalanick. Prior to this, he was senior vice president and software engineer at Google Inc.. He was a Google Fellow, and was the head of Google's core ranking team. He left Google on 26 February 2016 as the Head of Google Search.
Document 13: Chris Tsakalakis: Chris Tsakalakis is a Greek-American technology executive. He is a former Entrepreneur in Residence at Benchmark Capital and a former president of StubHub and executive at eBay. A University of Pennsylvania graduate, he began his career in e-commerce in 1996 and joined eBay in 2003. He was president of StubHub from 2007 to 2014, as the company became the world's largest ticket marketplace and a leading sports and entertainment sponsor with more than 90 partnerships worldwide. Because of StubHub’s influence on the entertainment industry, Tsakalakis was named to the "Sports Business Journal" ’s 2011, 2012 and 2013 lists of the 50 most influential people in the sports business, the Billboard 2012 and 2013 Power 100 lists and the 2010 and 2011 "Huffington Post" Sports Game Changer lists. "Ticket News" cited him as "one of the most influential executives in the ticketing industry."
Document 14: Alphabet Inc.: Alphabet Inc. is an American multinational conglomerate created in a corporate restructuring of Google on October 2, 2015. It is now the parent company of Google and several former Google subsidiaries. The two founders of Google assumed executive roles in the new company, with Larry Page serving as CEO and Sergey Brin as President. The company is based in Mountain View, California. It has over 75,606 employees as of 2017.
Document 15: Travis Kalanick: Travis Cordell Kalanick ( ; born August 6, 1976) is an American businessman.
ground_truth: Uber