Gediminas Lelešius

Gediminas Lelešius is a software engineer at Google in Zurich, working on YouTube Data, and a competitive programmer from Lithuania. He represented Lithuania at the International Olympiad in Informatics in 2017, 2018 and 2019, winning two bronze medals and a silver. He read Computer Science at the University of Cambridge (St Catharine's College, 2019-2022), graduating with first-class results, then joined Google. Earlier roles include software engineering internships at IMC Trading (Amsterdam) and Bentley Systems, and tutoring/teaching competitive programming at the National Pupils Academy. He runs a personal site at lelesius.eu and a GitHub account at github.com/gediminasel.

Notes6

• Quant employment verification - CONFIRMED. Support: his own website (lelesius.eu) lists 'Software Engineering Intern at IMC Trading (2022 Jul - Sep)' and the LinkedIn index lists 'Software Engineer Intern, IMC Trading, Amsterdam, 2022'. Employer classification: IMC Trading (IMC B.V.) is a proprietary trading firm / market maker, so the role is a genuine quantitative-finance-adjacent software engineering internship, not a student competition, camp or insight day. Identity: the site, IOI stats page, LinkedIn and GitHub all describe the same person (Google, Cambridge, IOI Lithuania), so the identity is supported. Note the internship is a SWE role rather than a trading/research seat, and it predates a possible index lag; no evidence of any other quant role was found.Jul 2022
• Gediminas Lelešius works at Google in Zurich on the YouTube Data team, listed on his own site as 'Software Engineer at Google (2022 Sep - now)'; LinkedIn index shows current role 'Software Engineer at Google, Zurich, YouTube Data'. Current employment rests on the LinkedIn index plus the subject's own website, not an independent primary source.Sep 2022
• Past software engineering internship at IMC Trading in Amsterdam in summer 2022 (site '2022 Jul - 2021 Sep', clearly a typo for 2022 Sep; the LinkedIn index lists '2022'). IMC is a market maker / proprietary trading firm, so this is an actual quant-adjacent internship, distinct from olympiads/camps.Jul 2022
• Read Computer Science at the University of Cambridge, St Catharine's College (2019-2022), graduating with first-class results; Part IA, IB and II marks all first class (Part II dissertation 76.7%).Jun 2022
• Won silver at IOI 2019 and bronze at IOI 2017 and 2018 representing Lithuania (stats.ioinformatics.org); the same page links his homepage, LinkedIn, Codeforces, Kattis and Facebook accounts, corroborating identity across profiles.Aug 2019
• A LinkedIn posts by NMA referencing Gediminas Lelešius and a separate okredo company record for 'Gediminas Lelešius', manager of UAB Euromeka, indicate at least one other person shares the name; the Euromeka manager is a different, unrelated individual and is excluded from this profile.
• Works as a Computer Science tutor/lecturer at the National Pupils Academy (NMA) from Sep 2022, continuing a teaching role he held 2019-2021 (competitive programming), and has given lectures at NMA summer/winter sessions (2022, 2023) on programming paradigms, game engines and batch data pipelines.2023
• Part II (Cambridge) dissertation 'Improving Resilience of ActivityPub Services' (76.7%, first class), open-sourced at github.com/gediminasel/activitypub-resilience - his main public research/code project.May 2022
• Competitive programming record beyond IOI: ICPC World Finals 2021 (60th, University of Cambridge), first place NWERC 2021 and UKIEPC 2021 with team 'Sidney's Cat Tree', and Google HashCode qualifications 2021 and 2022.2022
• Prior internship as Software Engineer Intern at Bentley Systems (infrastructure engineering software) in Lithuania, Jun-Sep 2021 - a software company, not a finance firm.Jun 2021
• Baltic Olympiad in Informatics results: 2019 gold, 2018 first place, 2017 participant; also EUSO 2017 silver and IJSO 2016 bronze in science olympiads.Apr 2019
• Scored 100% in five Lithuanian national state exams - informatics, mathematics, physics, chemistry and English - a strong secondary-school academic signal alongside the olympiad medals.Jul 2019