Kristiyan Vasilev

Bulgarian mathematician, Oxford MMath in Mathematics (St John's College, 2019-2023) and IMO 2018/2019 medallist. Index/aggregator-listed roles: Quantitative Developer at crypto algorithmic-trading firm BlockTech B.V. (2024), Mathematician at gambling-software maker EGT Digital (2024-), and PhD student at IMI-BAS (2025-).

Notes8

• Quant employment verification: UNRESOLVED. BlockTech B.V. is genuinely a quantitative trading firm: its own site describes it as a crypto-native firm specializing in algorithmic trading of digital-asset derivatives since 2018, and it advertises Quantitative Developer / Quantitative Researcher roles (block-tech.io). The specific role titled 'Quantitative Developer, BlockTech B.V., 2024' rests only on a LinkedIn-derived index (via the enrichment backbone) and the aggregator RocketReach, not on any primary company or direct-author source; no primary page names him as an employee. Identity support is also incomplete: the LinkedIn/quant person is a Sofia-based Oxford mathematics graduate (St John's College, confirmed by the college magazine), which is consistent with the Bulgarian IMO 2018/2019 participant but no source directly joins the two. RocketReach additionally lists a conflicting current institute ('Institute of Organic Chemistry' vs the index's 'Institute of Mathematics and Informatics'), so aggregator data is internally unreliable. Because the entitled role is index/aggregator-only with an unconfirmed identity link, the claim is retained as UNRESOLVED rather than CONFIRMED.2024
• BlockTech B.V. is a crypto-native firm specializing in algorithmic trading of digital-asset derivatives since 2018, advertising Quantitative Developer and Quantitative Researcher roles in Amsterdam and Singapore, so the 'Quantitative Developer' label maps to a genuine quantitative-trading employer.2024
• Studied Mathematics at St John's College, Oxford (MMath); listed in the St John's College magazine in 2021 and again in 2023 with 'DISTINCTION OR FIRST CLASS IN FIRST PUBLIC EXAMINATIONS', confirming the Oxford mathematics degree independently of LinkedIn.2023
• Won a bronze medal for Bulgaria at IMO 2019 (rank 275, 55.9%, 17 points) and an honourable mention at IMO 2018 (rank 338, 43.3%, 12 points).2019
• Index and aggregator records list the same three roles (Quantitative Developer at BlockTech B.V. 2024, Mathematician at EGT Digital 2024-, PhD student at IMI-BAS 2025-), but RocketReach names a different current institute ('Institute of Organic Chemistry') and exposes only domain-level emails (@bas.bg, @egt-digital.com), so aggregator employment data is not reliable enough to treat as primary confirmation.
• EGT Digital is a gambling/casino game and software supplier (egt-digital.com), so 'Mathematician' there is a gaming-math role rather than a quantitative-finance role; it should not be counted toward quant-finance employment.2024
• Won silver (38 points) for Bulgaria at the 2018 Balkan Mathematical Olympiad, another competition placing, not employment.2018
• The LinkedIn-derived index reports ~314 connections and ~315 followers and a headline of 'Phd Student', indicating a modest public footprint with no verified GitHub, personal website, or X account found.