Mark Karneichyk

we build production-grade prediction market infra and algorithms. DM [contact omitted]

Notes6

• Quant employment verification: CONFIRMED. He holds (per his LinkedIn profile, index-derived self-reported data) actual quant/trading roles, not student programs: Quantitative Researcher + Developer (2022-2023) and Quant Team Lead | Researcher & Developer (2023-2024) at an employer withheld as 'NDA', and from 2025 a 'Prediction Markets Trading' role at a private team; his public posts describe building prediction-market market-making infra and trading for several years. Identity is supported: IOI/CPHOF/Codeforces handle 'markysha' matches his LinkedIn handle and 'IOI winner' headline. Caveats retained: the quant employer names are withheld ('NDA') so employer-level classification is unverified, the roles are crypto/prediction-market focused rather than a named bank or hedge fund, the strongest evidence is his own profile/posts rather than independent primary sources, and the Center of Mathematical Finance role is educational (seminars), not a quant employer.
• Career timeline (LinkedIn index, self-reported profile data - index-only, not independently confirmed at employer level): Yandex Intern Backend Developer 2019; Awatera Frontend+Backend dev 2020; Huawei Intern Data Engineer 2020-2021; Tinkoff Junior Software Engineer 2021; Center of Mathematical Finance Product Owner/Seminars teacher 2022-2023; NDA Quantitative Researcher+Developer 2022-2023; NDA Quant Team Lead 2023-2024; TON Foundation Senior Data Analyst 2024-2025; private prediction-market trading team 2025-present.
• Identity anchor: the IOI statistics page lists Mark Karneichyk of Belarus with a 2018 IOI silver medal and links the Codeforces handle 'markysha'; the same 'markysha' slug is the LinkedIn handle and his LinkedIn headline reads 'IOI winner', so the Olympiad record and the LinkedIn profile are consistent with one person (aggregator/index corroboration, not independent primary-source confirmation of employment).
• The two quant roles are listed under an anonymising label 'NDA' with no verifiable employer name; their descriptions are crypto-market focused (inside/cross-exchange latency arbitrage, Binance/OKX market-data feeds, strategies from scratch), consistent with proprietary crypto trading rather than a named bank or hedge fund, so employer-level quant classification cannot be verified from the index alone.
• His LinkedIn summary states 'we build production-grade prediction market infra and algorithms', and a post says a 'small team' does this - self-described current activity in prediction-market/HFT market-making, matching the index's current role 'Prediction Markets Trading at private team' (2025-present).
• CPHOF profile confirms a 2018 IOI silver medal (score 60) for Belarus, cross-linked to Codeforces handle markysha.
• A post records an interview with a non-public team specialising in arbitrage, information trading and farming, where he was asked about on-chain data work and an anti-multiaccounting system he built, and given a live orderbook task on ASTER/USDT (Aster DEX) - indicating active engagement with crypto market-making/arbitrage roles.
• 'Center of Mathematical Finance' role (Product Owner, Seminars teacher 2022-2023) is educational: he managed 50+ students on projects titled 'High Frequency Market Making in the crypto markets' (2022) and 'Market Prediction in the crypto high frequency trading' (2023). Teaching/mentoring, not employment at a quant firm.
• A post claims '$50k/month on Polymarket' based on analysing the top 1,000 markets - self-reported prediction-market trading revenue, not independently verified.
• At TON Foundation (2024-2025, Senior Data Analyst) the index describes saving >$500k identifying sybils and bot activity in airdrops - crypto analytics rather than quantitative trading; TON Foundation is the organisation behind the TON blockchain, a crypto entity, not a quant fund.
• Education: Bachelor in Applied Mathematics and Informatics, Higher School of Economics (2018-2022), plus Data Analysis School (2021-2022) - index-only from the LinkedIn profile. The IOI 2018 medal and 2018-2022 HSE dates line up with an undergraduate Olympiad track.
• Contact: a work email [contact omitted] appears on the LinkedIn profile as the primary contact - a personal-work address rather than a corporate one, consistent with independent/small-team trading work.