Leif Raptis-Firth

Career path.

1. Sierra

   Software Engineer

   Aug 2025 - Present
2. Lyft

   Senior Staff Software Engineer

   May 2023 - Aug 2025
3. Lyft

   Staff Software Engineer

   Sep 2021 - May 2023
4. Microsoft

   Senior Software Engineer

   Dec 2019 - Sep 2021
5. Microsoft

   Software Engineer II

   Dec 2017 - Dec 2019
6. Microsoft

   Software Engineer

   Oct 2016 - Dec 2017
7. Microsoft

   Software Engineer Intern

   May 2015 - Jul 2015
8. Queen's University

   Teaching Assistant

   Jun 2014 - Jul 2014
9. Razer Inc.

   Professional Gaming

   Jan 2010 - Jan 2012