Patrick Hayes


Bachelor of Mathematics, University of Waterloo, Computer Science/Pure Mathematics Double Honours, Waterloo, ON, 2007–2012

  • Graduated with Distinction; Cumulative average: 90%; Major average: 94%
  • Dean's Honours List, University of Waterloo, 2007–2012
  • St. Jerome's University President's Scholarship, University of Waterloo, 2007–2009
  • Excellent Academic Standing, University of Waterloo, 2007–2012

Relevant Coursework

  • Machine Learning; Artificial Intelligence; Algorithm Design; Database Systems Implementation; Principles of Programming Languages; Operating Systems; Theory of Computation
  • Readings in Pure Mathematics; Algebraic Number Theory; Measure Theory and Fourier Analysis; Real Analysis; Complex Analysis; Ring/Group Theory; Elementary Differential Geometry
  • Communications in Math and Computer Science, Macroeconomics

Work Experience

Cofounder & CTO, SigOpt, San Francisco, CA, November 2014–present

Senior Software Engineer, Foursquare, New York, NY, July 2012–November 2014

  • Developed passive awareness notifications to remind users of the best content nearby
  • Built the tips timeline, for discovering tips from people and tastes you follow
  • Created Foursquare expertise, for recognizing and rewarding city and neighborhood experts

Financial Software Developer, Bloomberg LP, New York, NY, May–August 2011

  • Developed an application for monitoring volatility of financial securities
  • Implemented an efficient, scalable caching system for handling large datasets using C++
  • Designed an intuitive user interface for trend analysis using Javascript

Research Engineer, (formerly ContextLogic), San Francisco, CA, September–December 2010

  • Developed a topical analysis application using sophisticated machine learning methods
  • Produced highly optimized C++ to improve performance in existing technologies by up to 20x
  • Designed a distributed indexer using Python and C that performed scalable data mining

Software Engineer, Facebook, Palo Alto, CA, January–April 2010

  • Developed a complete, scalable, distributed search application using PHP, Java and SQL
  • Leveraged open source technologies to build a robust, efficient, and extensible search framework
  • Used Javascript and Ajax to develop an engaging user experience

User Interface Developer, Sybase iAnywhere, Waterloo, ON, May–August 2009

  • Developed user interface functionality for commercial database software using Flex/Actionscript
  • Analyzed and implemented performance-critical web server code in Java and SQL
  • Designed a mobile version of an existing web application using Java, PHP, and SQL

Automation Tools Developer, Research In Motion, Waterloo, ON, September–December 2008

  • Created and improved test suites for BlackBerry OS and Android using Java, C, and Python
  • Developed a server for hosting and displaying test results using Django

Software Test Associate, Research In Motion, Waterloo, ON, January–April 2008

  • Implemented new test procedures and expanded on existing testing frameworks
  • Developed test scripts in Python for testing hardware functionality of devices


Young Alumni Achievement Award, University of Waterloo, Faculty of Mathematics, January 2018


Ian Dewancker, Michael McCourt, Scott Clark, Patrick Hayes, Alexandra Johnson, George Ke. A Strategy for Ranking Optimization Methods using Multiple Criteria. Presented at ICML 2016, July 2016

Ian Dewancker, Michael McCourt, Scott Clark, Patrick Hayes, Alexandra Johnson, George Ke. Evaluation System for a Bayesian Optimization Service. Presented at ICML 2016, May 2016

Ian Dewancker, Michael McCourt, Scott Clark, Patrick Hayes, Alexandra Johnson, George Ke. A Stratified Analysis of Bayesian Optimization Methods. SigOpt, March 2016

Open Source Contributions

Wikipedia/Wiktionary Mobile App, Wikimedia Foundation

  • Developed the Wiktionary mobile application for Android/iOS using PhoneGap
  • Contributed bugfixes and improvements to Wikipedia mobile application
  • Worked on a remote team with 3 undergraduate students from schools across Canada


  • Programming: Python, Scala, Javascript, Ruby, C, C++, Java, PHP, Lisp, Haskell, OCaml, Prolog, Actionscript, Visual Basic
  • Technologies: React, Android, iOS, BlackBerry, PhoneGap, Mongo, Rails, Django, LAMP, jQuery, Ajax, Postgres, MySQL, Heroku, AWS, CSS, HTML5, Git, SVN, Bash, Zsh, Flex, Google Perftools
  • Fields: Optimization, Machine Learning, Frontend, Data Mining, Search, Distributed Systems, Algorithm Design, Systems Profiling


Federation Orientation Committee Member, University of Waterloo, Waterloo, ON, 2010

  • Worked with a team of three students to plan Math Orientation Week 2010
  • Organized and ran events for 1500 students spanning one week in September
  • Contributed over 500 hours of volunteer involvement to planning Orientation Week

Orientation Week Head Leader, University of Waterloo, Waterloo, ON, 2008–2011

  • Gained extensive leadership experience by leading a group of over 200 first year students
  • Directed a group of ten other orientation leaders
  • Created and maintained a friendly, co-operative environment

Undergraduate Teaching Assistant, University of Waterloo, Waterloo, ON, January–December 2009

  • Tutored undergraduate students in Calculus
  • Marked weekly assignments

Mathematics Society First-Year-At-Large, University of Waterloo, Waterloo, ON, September–December 2007

  • Elected by the first-year Math student body to represent them in student government