Lenart Dolinar

UCL computer science student and IMO 2023 contestant for Slovenia. Index/profile data lists quant-trading internships at Optiver (2024) and Maven Securities (2025-); published researcher on synthetic medical text generation with LLMs.

Notes6

• Quant employment verification: CONFIRMED. His profile lists an actual 'Quantitative Trading Intern' role at Optiver (Amsterdam, 2024) and an actual 'Trading Intern' role at Maven Securities (London, from June 2025) rather than student programs or insight days; his identity is supported by the IMO 2023 official record (Slovenia, Honourable Mention) matching the UCL/Slovenia profile, and his paper affiliation (UCL, Jozef Stefan Institute). Optiver is a listed-derivatives market maker and Maven Securities is a proprietary trading/options market-making firm ('Advanced Trading & Technology', C++ options market-making roles), both genuine quantitative-finance employers. Caveat: the employment entries are index/LinkedIn-derived, not yet confirmed by a primary employer source.2026
• LinkedIn-derived profile headline reads 'CS at UCL | Maven Securities Trading Intern | Former Optiver Trading Intern | IMO contestant'; the UCL + Slovenia identity matches the IMO official record and the published papers, so the profile belongs to the same Lenart Dolinar.2026
• Maven Securities role: 'Trading Intern', London, listed as current from June 2025 - this evidence is index/LinkedIn-derived only, not independently confirmed by a primary employer source.Jun 2025
• Optiver role: 'Quantitative Trading Intern', Amsterdam, 2024 (Jul-Aug) - this evidence is index/LinkedIn-derived only, not independently confirmed by a primary employer source.Jul 2024
• Author on 'Evaluating Open-Source Large Language Models for Synthetic Non-English Medical Data Generation Using Prompt-Based Techniques', Informatica journal, published 2025-07-03 (Cobiss 245120515).Jul 3, 2025
• Listed as first author on 'Generating Non-English Synthetic Medical Data Sets' (SiKDD 2024), affiliated with University College London; co-authors Erik Calcina and Erik Novak of the Jozef Stefan Institute - the paper affiliation independently corroborates his UCL enrolment.Oct 2024
• Jozef Stefan Institute: 'AI Research Intern' (2024), working on synthetic data generation for LLM named-entity extraction of medical data - index/LinkedIn-derived; consistent with his authorship of the JSI-affiliated synthetic-medical-data papers.2024
• IMO 2023: competed for Slovenia, ranked 416 (top 32.9%), Honourable Mention, 12 points (P1=7, P4=3, P5=2).Jul 2023
• Employer classification (Optiver): global market maker in listed derivatives, i.e. a genuine quantitative trading firm - confirms the Optiver lead satisfies the quant-employment criterion.
• Employer classification (Maven Securities): proprietary trading firm / options market maker ('Advanced Trading & Technology'), with open roles such as 'C++ Developer - Options Market Making' - confirms it operates in quantitative trading.