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People / Costin-Andrei Oncescu
CO
Career profile

Costin-Andrei Oncescu

PhD student at Harvard University

Cambridge, Massachusetts, United States

Career path.

  1. Together AI

    Research Intern

    May 2025 - Present
  2. Together AI

    Present
  3. Five Rings Capital, LLC

    Quantitative Research Intern

    Jun 2024 - Aug 2024
  4. Hudson River Trading

    Software Engineer Intern

    Jul 2021 - Sep 2021
  5. Jane Street

    Software Engineer Intern

    Jul 2020 - Sep 2020