Tonci Kokan

Tonci Kokan is a Croatia-based-born data science and engineering leader currently Director of Engineering at Bloom & Wild in London. He holds a Master's degree in Theoretical Mathematics from the University of Zagreb (2001-2006) and placed 161st with a Bronze medal for Croatia at IMO 2000. He later served the Croatian olympiad program as a team leader (MEMO) and as Croatian deputy leader at IMO 2011 and 2014. His early career (2005-2012) included analyst roles at the investment bank CA IB Croatia and at Aureus Invest, plus doctoral-level work in mathematics at the University of Split Faculty of Economics; his career since 2010 has centred on data science (Probst Sistemi/Stinga, Jacktime, Kindred Group, Marks and Spencer) before moving to Bloom & Wild in 2020.

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• Quant employment verification: UNRESOLVED. His only finance-sector roles are Analyst at CA IB (a conventional investment bank, Aug 2005-Jan 2006) and Analyst at Aureus Invest (Dec 2006-Apr 2008), whose own materials describe it as a proprietary trading firm trading its own capital across Equities, CFDs, ETFs, Options/Futures, Commodities and FX. Whether those analyst roles were quantitative/systematic is NOT established: the only role descriptions visible are 'Corporate valuation' and 'Stock market modeling' (Aureus), which describe valuation modelling rather than algorithmic/systematic trading, and no source states a quant/algorithmic role or a hedge-fund/market-making employer. The claim is index/aggregator-and-self-description based, not independently confirmed, and the employments are described only as 'Analyst'. Kept UNRESOLVED rather than CONFIRMED because 'Aureus Invest' has homonym companies (e.g. Aureus Asset Management, Aureus Capital) and the quant nature of the actual roles is unverified; and rather than NOT CONFIRMED because a proprietary-trading employer with 'stock market modeling' is at least partly consistent with a trading-analytics role.
• Mathematical-olympiad identity is independently confirmed: he won a Bronze medal for Croatia at IMO 2000 (rank 161, 65.3%, 15 points).2000
• Identity anchor: LinkedIn /in/toncikokan lists Tonci Kokan as Director of Engineering at Bloom & Wild, educated at University of Zagreb (Master's, Theoretical Mathematics, 2001-2006) and Westminster College (MO); the same profile lists an Analyst role at Aureus Invest (Dec 2006-Apr 2008) and CA IB (Aug 2005-Jan 2006). This ties the finance leads and the mathematician identity to one person.
• At Bloom & Wild he progressed Lead Data Scientist (2020-2021) -> Head of Data (2021-2026) -> Director of Engineering (2026-present); the trajectory shows a shift from hands-on data science into engineering leadership over six years at one company.2026
• Employer classification - Aureus Invest: its LinkedIn company page and its own description (via the company index) describe Aureus Invest Ltd. as a 'proprietary trading firm' focused on trading and investing its own capital across Equities, CFDs, ETFs, Options/Futures, Commodities and FX, registered in London with a trading room in Dubrovnik; a Forex directory lists it trading forex since 2010. This is a proprietary trading firm (not a market-maker/bank), and the classification rests on company-authored/industry listings, not primary-source confirmation.
• Post-competition involvement in the Croatian olympiad program: listed as Croatian deputy leader at IMO 2011 (team HRV) and, per his own Quora bio, at IMO 2011 and 2014, and as a team leader at MEMO 2011 - a durable volunteer/official role years after competing.2011
• He proposed Problem 2 (C3) at IMO 2000 - proof that the olympiad identity and the problem-proposer credit belong to the same Croatia entrant.2000
• Early career ran in parallel across finance and academia: LinkedIn shows Analyst at CA IB, Croatia's Creditanstalt investment bank (Aug 2005-Jan 2006) and Analyst at Aureus Invest (Dec 2006-Apr 2008, Zagreb) alongside a part-time Research and Teaching Assistant post at the University of Split Faculty of Economics (2008-2012) focused on mathematical modelling in stock markets.
• Applied-mathematics output: co-author of 'Exponential generalised network descriptors' (Advances in Mathematics of Communications, 2019) and 'Generalised network descriptors' - graph-theory research affiliated with the University of Split, published while working outside academia.2019
• He sat on the supervisory board of the Central Depository Agency in Podgorica, Montenegro (May 2007-Apr 2008) - a capital-markets governance role held concurrently with the Aureus Invest analyst post.
• Career shift to data science: he was a Data Scientist at Probst Sistemi / Stinga Software (2010-2017), then Jacktime S.a r.l. (Split, 2017-2018), Kindred Group plc (Data Scientist 2018-2019, Senior Data Scientist II 2019-2020) and Marks and Spencer (Lead Data Scientist, 2020) before joining Bloom & Wild.
• Employer classification - CA IB (Creditanstalt Investment Bank, a subsidiary of Bank Austria): a full-service investment/corporate-finance bank active across Croatia and South-East Europe - i.e. a bank, not a systematic/quant hedge fund.