François Sellier

François Sellier is a quantitative researcher at Squarepoint Capital in London (LinkedIn index/profile). He represented France at the IMO 2016, earning an Honourable Mention with 11 points (animath). He studied at École Polytechnique (Cycle Ingénieur polytechnicien, mathematics and computer science), then did a PhD in computer science at École normale supérieure / PSL, working on graph and matroid optimization with Chien-Chung Huang. His peer-reviewed work appeared in Theoretical Computer Science (2023), Algorithmica (2024) and Mathematics of Operations Research (2026). Prior roles include a software engineering internship at Citadel (2023, commodities engineering - European power desk) and an engineering internship at EDF's Golfech nuclear plant (2021-2022).

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• Quant employment verification: CONFIRMED. Identity is supported: the LinkedIn profile francois-sellier-6560b7307 under the name Francois Sellier carries the same education (Ecole Polytechnique, Corps des Mines, ENS PhD) that matches the Olympiad pathway. Two actual quantitative-finance roles: a current Quantitative Researcher role at Squarepoint Capital (London, from 2024) and a 2023 Software Engineer Internship at Citadel on the Commodities engineering - European power desk. Both Squarepoint Capital and Citadel are quantitative investment/trading firms: Squarepoint Capital is a systematic/quantitative investment manager (squarepoint-capital.com) and Citadel is a global alternative investment manager whose market-making arm Citadel Securities and commodities trading desks operate in quantitative trading. The EDF internship is engineering at a nuclear power plant, not a trading role. The ENS research internship is academic. There is no confirmed bank/energy/crypto trading role beyond the above. Employment evidence is index/LinkedIn-based (single party); no independent employer-side confirmation was found.
• Represented France at the 2016 International Mathematical Olympiad (Hong Kong) as a member of the six-student French team, scoring 11 points (P1=7, P4=4) for an Honourable Mention; the official French olympiad body Animath lists him in the final results table.Jul 2016
• Earned a PhD in Computer Science from Ecole normale supérieure / PSL (2022-2024) on graph and matroid optimization, advised by Chien-Chung Huang; the dissertation 'Sparsification for graph and matroid optimization problems' is deposited on HAL (tel-05532316).Sep 27, 2024
• Peer-reviewed publications from the PhD: 'Sparsification for graph and matroid optimization' in Theoretical Computer Science (2023), a paper in Algorithmica (2024), and a paper in Mathematics of Operations Research (2026), all co-authored with Chien-Chung Huang per the ORCID record.
• Participated in the ICPC (International Collegiate Programming Contest) 2022 World Finals with an Ecole Polytechnique team; cphof.org records the World Finals 46 entry for France.Apr 18, 2024
• French elite education track: Cycle Ingénieur polytechnicien at Ecole Polytechnique (2018-2023, mathematics and computer science), then the Corps des Mines master's programme (2021-2024), a selective French state engineering corps pathway.
• Prior engineering internship at EDF's Golfech nuclear power plant (2021-2022), primary circuit maintenance team - an energy-sector engineering role, distinct from energy trading.