Egor Lifar

Currently student @ MIT.<br><br>Competitive programming expert.<br>My interests are…

Notes7

• Quant employment verification: UNRESOLVED. The employment history in this profile (Jump Trading Group Quantitative Research Intern Jun-Aug 2025 Chicago; The D. E. Shaw Group Intern May-Aug 2024 New York; Jane Street Software Engineer Intern May-Aug 2023 New York; Google Software Engineer Intern 2022; Yandex Software Engineer Intern 2020) is derived solely from the LinkedIn profile enrichment backbone / index and aggregator snippets (rocketreach.co); no independent primary-source document, employer page, or person-controlled resume confirms these roles, so they are labeled index-only. Identity is supported: MIT BS Mathematics and Computer Science 2021-2025 and MEng 2026 (LIDS), and Russia IOI representation 2017-2021. Employer classification by business line: Jump Trading, The D. E. Shaw Group and Jane Street all operate in quantitative trading / market-making / quantitative hedge-fund activities; Google and Yandex (Search) are not quantitative-finance employers. Because employment rests on index-derived data with no independent confirmation, verdict is UNRESOLVED rather than CONFIRMED.Sep 17, 2026
• Represented Russia at five consecutive International Olympiads in Informatics (2017, 2018, 2019, 2020, 2021), winning gold medals in 2019 (rank 26, score 419.30/600) and 2021 (rank 19, score 412/600) and silver in 2017 (rank 38), 2018 (rank 60) and 2020 (rank 82).
• Authored the 2026 MIT MEng thesis 'WaterSIC: Weight-only post-training quantization of large language models' under advisor Yury Polyanskiy in MIT LIDS, the capstone of a research line on LLM quantization rather than a trading role.2026
• Co-authored 'WaterSIC: information-theoretically (near) optimal linear layer quantization' (arXiv 2603.04956) with Semyon Savkin, Or Ordentlich and Yury Polyanskiy, accepted at ICML 2026 as a spotlight poster; correspondence address [contact omitted] confirms MIT affiliation.2026
• Won silver (8th place of 139 teams) with the MIT team at the 2025 ICPC World Finals as one of three members (Egor Lifar, Richard Qi, Semyon Savkin); carried $2400 in cumulative competitive-programming prize money and is listed in the Competitive Programming Hall of Fame.
• Competitive-programming handles form a cross-linked identity loop: Codeforces profile kiyotaka and egor.lifar, AtCoder EgorLifar, and Topcoder egor.lifar all point to the same person, corroborating the IOI identity.
• Undergraduate research spanned MIT CSAIL (2023-2024) then MIT LIDS (2024-2026), producing work presented at ICML 2026 and RF-Transformer signal-separation co-authorship with Yury Polyanskiy's group.
• Education timeline: AESC MSU - Kolmogorov Boarding School (Computer Science, 2019-2021), then MIT BS Mathematics and Computer Science (2021-2025) and MIT MEng (2025-2026); the boarding school and MIT years align with the IOI 2017-2021 span according to competition sources.
• The IOI statistics database holds a 2021 contestant photo and Codeforces contact for Egor Lifar, an independent Olympiad record confirming the Russia representation separate from the LinkedIn profile.2021
• Russian-language ITMO news coverage lists Egor Lifar as part of a Russian team travelling with Kolmogorov Boarding School, corroborating the school and national-team affiliation (page gated by reCAPTCHA).