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Career profile

Luke Simon

Meta | LLM-recsys | Artificial Intelligence | Machine Learning | Ad-Tech | Ranking | Recommender Systems | Currently at Meta | Formerly at LinkedIn, Twitter, & Microsoft

San Francisco Bay Area

Career path.

  1. Meta

    Director of AI Research

    Sep 2025 - Present
  2. LinkedIn

    Distinguished Engineer

    Jan 2023 - Sep 2025
  3. Twitter

    Senior Director of Machine Learning

    Jan 2021 - Jan 2023
  4. Twitter

    Engineering Director of Machine Learning

    Jan 2020 - Jan 2021
  5. Twitter

    Senior Engineering Manager of Machine Learning

    Jan 2018 - Jan 2020
  6. Twitter

    Software Engineering Manager of Ads Targeting & Machine Learning

    Jan 2014 - Jan 2018
  7. Twitter

    Staff Machine Learning Engineer

    Jan 2013 - Jan 2014
  8. Microsoft

    Principal Software Development Lead

    Jan 2013 - Jan 2013
  9. Microsoft

    Senior Software Development Lead

    Jan 2011 - Jan 2013
  10. Microsoft

    Senior Software Development Engineer

    Jan 2009 - Jan 2011
  11. Metallect

    Director of Engineering

    Jan 2008 - Jan 2009
  12. Metallect

    Lead Software Architect

    Jan 2007 - Jan 2008
  13. Metallect

    Senior Software Engineer

    Jan 2006 - Jan 2007
  14. The University of Texas at Dallas

    Research Development Software Engineer

    Jan 2002 - Jan 2006
  15. CVA Incorporated

    Chief Software Architect

    Jan 2000 - Jan 2001
  16. Multigen Paradigm

    Software Engineer

    Jan 1999 - Jan 2000
  17. Alcatel Telecommunications

    Software Engineer

    Jan 1998 - Jan 1999
  18. DSC Communications

    Software Engineer

    Jan 1996 - Jan 1998