Łukasz Wiechecki

Łukasz Wiechecki is a Polish mathematician turned quantitative finance professional based in London. He represented Poland at the International Mathematical Olympiad in 1991, 1992 and 1993 (bronze medal 1991; scores of 26 and 23 in 1992/1993). He holds a PhD in pure mathematics from the University of Warsaw (MIMUW, 2002) and published research on unit groups of group rings, including 'Group algebra units and tree actions' (Journal of Algebra, 2007). He moved into quantitative finance in London: credit risk and CVA modelling at HBOS (2006-2009) and Lloyds Banking Group (2009-2010), then roughly 13 years at Credit Suisse as a front-office quant rising to Director across emerging markets and structured credit (2010-2023), a quantitative credit research role at Millennium (2023-2025), and, per the LinkedIn profile, Credit Quant Analyst at Brevan Howard. Employment fields are sourced from the LinkedIn profile / people index and are index-only; no independent primary-source confirmation of the roles was found.

Notes7

• Quant employment verification: CONFIRMED. Identity is supported: the LinkedIn profile belongs to the Polish IMO 1991-1993 contestant, corroborated by a PhD in pure mathematics at the University of Warsaw (same alma mater as the group-ring papers published under the same name). Employment evidence: the LinkedIn profile (index-sourced) lists a continuous real quant career - Middle Office Quant / Credit Risk Modelling at HBOS (2006-2009), Front Office Quant / Quantitative Credit Modelling at Lloyds Banking Group (2009-2010), Front Office Quant VP then Director at Credit Suisse across Emerging Markets and Structured Credit (2010-2023), Quantitative Researcher - Credit at Millennium (2023-2025), and Credit Quant Analyst at Brevan Howard (2026-). Employer classification: HBOS, Lloyds Banking Group, Credit Suisse and Millennium all operate in quantitative finance, and Brevan Howard is a global macro hedge fund; none is a name-only 'quant' match. Caveat: the roles come from the LinkedIn profile / people index and were not corroborated by an independent primary source (no bank bio page or press found), so treat per-role dates as index-only claims. No internships or student programs are involved - every entry is a substantive professional role.2026
• Timeline gap suggests a career pivot: academic publications through 2007 but a finance role at HBOS starting 2006, i.e. the move from Warsaw pure mathematics into London quantitative finance overlapped his last papers rather than following a clean academic track.2007
• Brevan Howard (listed current employer) is a global macro hedge fund / alternative investment manager founded 2002 with ~1,100 staff and 150 portfolio managers; its credit analytics team is a genuine quantitative finance employer, not a name coincidence.2026
• Authored 'Group algebra units and tree actions', Journal of Algebra 311 (2007) 781-799, on the unit group of the integral group ring of the infinite dihedral group - the strongest published evidence tying the Polish group-ring mathematician to the IMO contestant's name and education.May 15, 2007
• Published 'Finitely generated group ring units', Proceedings of the American Mathematical Society 127(1) (1999) - early academic output consistent with a Warsaw pure-math doctorate awarded 2002.1999
• Co-authored 'Units in Group Rings of Free Products of Prime Cyclic Groups' (Dokuchaev, ... Wiechecki) in Canadian Journal of Mathematics 50(2) 1998 - places the same name in the group-ring research community in the late 1990s.1998
• Served on the editorial problem committee of the Polish mathematics magazine DELTA ('Redaguje Łukasz Wiechecki' across 2000-2001 issues) - an enduring tie to the Warsaw olympiad-mathematics circle alongside peers such as Mikołaj Rotkiewicz.Jul 2001