Evgeni Kayryakov

Mathematics Olympiad medalist (Bulgaria, IMO 2019 silver, 2020 bronze) and Harvard 2025 graduate (AB Mathematics, AM Statistics). His public professional profile lists a quantitative research/trading trajectory: quantitative research internships at Eagles Bridge Capital (2022) and Citadel Securities (2023), a quantitative trading internship at Jump Trading (2024), and a subsequent Quantitative Researcher role at Jump Trading. Role data is drawn from his LinkedIn profile; employment evidence and employer classification are detailed in the 'Quant employment verification' note.

Notes13

• Quant employment verification: CONFIRMED. Identity is supported across independent sources (LinkedIn profile enrichment, IMO official results, Bulgarian press, Harvard Statistics newsletter, Phi Beta Kappa). The quantitative roles themselves rest on Evgeni Kayryakov's own LinkedIn profile as surfaced through a profile index plus an aggregator (RocketReach) - i.e. self-reported professional-profile data, not independent primary-source confirmation. Employer classification: Jump Trading (jumptrading.com) is a Financial Services proprietary/algorithmic trading firm and Citadel Securities (citadelsecurities.com) is a technology-driven global market maker - both CONFIRMED quantitative trading firms. His Jump Trading Quantitative Researcher role (from Oct 2025) and Jump Trading (2024) and Citadel Securities (2023) internships are actual roles/internships, not student programs. Eagles Bridge Capital could not be independently classified as a quant firm and is index-only.2025
• Index-only: LinkedIn profile headline 'QR @ Jump | Harvard 25' shows a current role as Quantitative Researcher at Jump Trading starting October 2025, based in Chicago per the profile's role entry while the profile location field reads Cambridge, Massachusetts.Oct 2025
• Identity cross-check: the same person is corroborated by the caller-supplied LinkedIn URL, by IMO official/Bulgarian Olympic records, and by a Harvard Statistics department newsletter and Harvard Phi Beta Kappa member list, so the Olympiad and Harvard identities are the same individual.2025
• Harvard University, class of 2025: Bachelor of Arts in Mathematics and Master of Arts in Statistics, 2021-2025.2025
• Index-only: Quantitative Trading Intern at Jump Trading, summer 2024, Chicago - a return internship before the full-time quantitative researcher role.2024
• Index-only: Quantitative Research Intern at Citadel Securities, summer 2023, Chicago.2023
• Employer classification check: Jump Trading (jumptrading.com) and Citadel Securities (citadelsecurities.com) are indexed as Financial Services firms - a proprietary algorithmic trading firm and a global market maker respectively - so both genuinely operate in quantitative finance; 'Eagles Bridge Capital' returned no matching company record and its quant status remains UNRESOLVED.2026
• Won a bronze medal for Bulgaria at IMO 2020 (scores 7,2,0,7,7,0 = 23 points, rank 162, 73.9%).Sep 2020
• Won a silver medal for Bulgaria at IMO 2019 (scores 7,6,1,7,7,0 = 28 points, rank 65).Jul 2019
• Elected to Harvard's Phi Beta Kappa chapter (recent members, classes of 2023-2027).2025
• Completed a directed reading project at Harvard mentored by mathematician Colin Defant, alongside a small cohort of Harvard/MIT students - a research-training signal separate from coursework.2024
• Index-only: Quantitative Research Intern at Eagles Bridge Capital, Sofia, Bulgaria, summer 2022; this employer could not be independently confirmed as operating in quantitative finance.2022