Stefan Spataru

Romanian mathematics olympiad competitor (IMO 2012-2015: bronze 2012, silver 2013, gold 2014, silver 2015) who studied Mathematics/Computer Science at Harvard University (BA) and works in quantitative finance as a Quantitative Researcher at Jump Trading, previously at Two Sigma and Jane Street.

Notes1

• Quant employment verification: CONFIRMED. Professional record is entirely in quantitative finance at three admitted quant firms: Trading Intern at Jane Street (janestreet.com, 2017), Quantitative Researcher Intern at Two Sigma (twosigma.com, 2018), Vice President / Quantitative Researcher in portfolio construction and monetization for global equities at Two Sigma (2019-2025), and Quantitative Researcher at Jump Trading (jumptrading.com, 2026-). All three operate in quantitative trading/research; identity is supported by the LinkedIn profile carrying both the Harvard Mathematics/CS education and the IMO 2012-2015 record. Employment rests on the LinkedIn/aggregator profile (index-level), not an independent primary-source confirmation.2026
• Represented Romania at the IMO four consecutive years (2012-2015); medals by year are bronze 2012, silver 2013, gold 2014, silver 2015.2015
• Longest single tenure is Two Sigma (2019-2025, about six years) spanning an intern-to-VP track, before a 2026 move to Jump Trading.2026
• Harvard University BA in Mathematics/Computer Science, 2015-2019, graduating the same year he entered the workforce in quant finance.2019
• Attended International Computer High School of Bucharest (2011-2015), the Romanian high school whose students dominate Romania's IMO teams.2015