Alisher Tortay

Quantitative researcher at Citadel Securities (London) with prior quant research at Citadel Securities (Singapore) and at Unnoted, a Seoul crypto quantitative trading firm. IMO bronze medalist for Kazakhstan (2013, 2014); KAIST graduate (2014-2018).

Notes6

• Quant employment verification: CONFIRMED. Identity is supported (official IMO record for Kazakhstan 2013/2014 plus matching GitHub and Kaggle profiles under the same name, with KAIST education aligning across sources). Actual work - not student programs: the LinkedIn-indexed timeline records substantive Quantitative Researcher roles at Unnoted (Seoul, 2019-2022) and Citadel Securities (Singapore 2022-2024, London 2024-present). Employer classification: Citadel Securities is an electronic market maker, and Unnoted is a crypto/proprietary trading firm - both quantitative-finance employers, neither merely 'quant'-named. Caveat: the employment facts are index/self-reported (LinkedIn) rather than independently primary-confirmed, and no separate source corroborates the individual roles, so the qualifier 'index-sourced' applies to the role claims.2024
• Career timeline, index-sourced from the LinkedIn profile and NOT independently primary-source confirmed: Machine Learning Engineer, PUBG Corporation (Seoul, 2018-2019); Quantitative Researcher, Unnoted (Seoul, 2019-2022); Quantitative Researcher, Citadel Securities (Singapore, 2022-2024); Quantitative Researcher, Citadel Securities (London, 2024-present).2024
• IMPORTANT identity caveat: the code profiles (GitHub 'chizhik', Kaggle 'chizhik') and the LinkedIn profile all carry the name Alisher Tortay with KAIST (Korea) education and South Korea work history, consistent with the Kazakhstan IMO competitor (Kazakhstudents commonly study at KAIST), but no source directly cross-links the IMO participant to the LinkedIn/GitHub accounts; the two identities align by name and KAIST, not by an explicit link.2024
• Citadel Securities is a global market maker / electronic trading firm whose quantitative research organisation runs systematic trading strategies - a genuine quantitative-finance employer; the individual employment claim itself rests on the LinkedIn profile (index/self-reported), not an independent primary confirmation.2024
• Unnoted (linkedin.com/company/unnoted, unnoted.com) is a Seoul-based technology/proprietary trading firm active in digital-asset (crypto) trading and crypto-exchange software, founded around 2016 - so the 2019-2022 Unnoted role is trading-firm employment rather than a company merely containing 'quant' in its name.2022
• Identity anchor: Alisher Tortay, representing Kazakhstan, competed at the International Mathematical Olympiad in 2013 and 2014, winning a bronze medal in each year (official IMO individual results).Jul 2014
• GitHub account 'chizhik' displays the name 'Alisher Tortay' (South Korea) with public repositories - corroborates the code-profile identity but is not evidence of employment.2024
• Kaggle account 'chizhik' is registered to 'Alisher Tortay' - a second code-platform match on the same handle.2024
• A personal site alishertortay.me existed (archived 2017-2018 via the Wayback Machine) but no longer resolves; the archived snapshots are the only public trace.2018