All medalists.
IMO & IOI, including honourable mentions.
SLSeli LulajAlbaniaIMO2017 · 2019Greater Boston AreaMassachusetts Institute of TechnologyIndexed profileSBSelim BahadırTürkiyeIMO2001 · 2002 · 2003UCLATeaching AssistantIndexed profileSDSelim DoğanTürkiyeIMO2024 · 2025 · 2026Competition recordBronze medal · Gold medalSHSelim HalykovTurkmenistanIMO2023 · 2024Competition recordBronze medalSVSelim VirtanenFinlandIMO2018HYPERMINEData ScientistIndexed profileSFSellier FrançoisFranceIMO2016SquarepointQuantitative ResearcherAutumn profileSESelman ErolTürkiyeIMO2001 · 2003Competition recordBronze medal · Silver medalSASemen AndriietsUkraineIMO2022Competition recordBronze medal
Semen DyatlovRussiaIOI2003Massachusetts Institute of TechnologyProfessor of MathematicsAutumn profileSSSemen SavkinRussiaIOI2020Competition recordGold medalIndexed profileSSSemen ShkilevichKazakhstanIOI2001Competition recordBronze medalSBSemih BasrıkTürkiyeIOI2013 · 2014NeticFull Stack EngineerIndexed profileSYSemih YavuzTürkiyeIMO2007 · 2008Competition recordBronze medalŞCŞemsi Cihan YücelTürkiyeIOI2001 · 2002Competition recordBronze medal · Silver medalIndexed profileSTSenkodan ThevendranSingaporeIMO1995 · 1996 · 1997LinkedInDirector of Business Operations & Strategy (APAC, EMEA & LATAM Talent and Learning Solutions)Indexed profileSLSen LinAustraliaIMO2007Competition recordHonourable mentionSCSeohyun ChoiRepublic of KoreaIOI2021셀렉트스타Data AssistantIndexed profileSMSeoirse MurrayIrelandIMO2014AI Security Institute (AISI)Red TeamIndexed profileSBSeojin ByunRepublic of KoreaIMO2026Competition recordGold medalSCSeokhwan ChoiRepublic of KoreaIOI2013 · 2014Samsung ElectronicsSoftware EngineerIndexed profileSHSeok Hyeong LeeRepublic of KoreaIMO2006 · 2007Competition recordGold medal · Silver medalSSSeongjin ShimRepublic of KoreaIMO2026Competition recordGold medalSASepehr AlipourIslamic Republic of IranIMO2024Competition recordSilver medal
Sepehr Ghazi NezamiIslamic Republic of IranIMO2009Renaissance Technologies LLCResearcherAutumn profileSMSepideh MahabadiIranIOI2007Competition recordGold medalSMSepidehsadat MirrahimiIslamic Republic of IranIMO2002Competition recordSilver medalSNSeppo NyrkköFinlandIOI1994Competition recordSilver medalSHSeptian HartonoIndonesiaIMO2003Singapore General HospitalSenior Medical PhysicistIndexed profileŞGŞerban GrigorescuRomaniaIMO1963Competition recordBronze medalŞNŞerban NacuRomaniaIMO1991 · 1992RobinhoodStaff Data ScientistAutumn profileŞSŞerban StrătilăRomaniaIMO1960 · 1961Competition recordBronze medal · Honourable mentionSASerdar AtayevTurkmenistanIMO2010Competition recordBronze medalSBSerdar BozdağTürkiyeIMO2023Center for Computational Life SciencesFounding DirectorIndexed profileSPSerdar PehlivanoğluTürkiyeIMO1998 · 1999Quick and Quality Coding and SoftwareChief Technology OfficerIndexed profileSKSergazy KalmurzayevKazakhstanIMO2012 · 2013 · 2014ElevenLabsEngineeringIndexed profileSBSerge BidallierFranceIMO2023 · 2024Competition recordBronze medalIndexed profileSBSergei BelkinUnion of Soviet Socialist RepublicsIMO1972Competition recordSilver medal
Sergei BerlovUnion of Soviet Socialist RepublicsIMO1988Physics and Mathematics Lyceum No. 239, Saint PetersburgMathematics teacherAutumn profileSFSergei FinashinUnion of Soviet Socialist RepublicsIMO1975 · 1976PMSCспециалистIndexed profileSGSergei GashkhovUnion of Soviet Socialist RepublicsIMO1971Competition recordGold medalSHSergei HlebutinUnion of Soviet Socialist RepublicsIMO1979Competition recordSilver medalIndexed profileSISergei IvanovUnion of Soviet Socialist RepublicsIMO1987 · 1988 · 1989Competition recordGold medalSKSergei KonyaginUnion of Soviet Socialist RepublicsIMO1972 · 1973Steklov Mathematical Instituteleading researcherIndexed profileSKSergei KuzmichBelarusIMO1992Competition recordBronze medalSLSergei LuchininRussian FederationIMO2018Сонтэк, Группа компанийСистемный администраторIndexed profileSMSergei MukhanovIOI2026Competition recordSilver medalSPSergei PatiakinUnited KingdomIMO2010EDBSenior Staff SDEIndexed profileSSSergei SaprikinUkraineIMO1992 · 1993NuRDSenior Java Software EngineerIndexed profileSSSergei SemenkovUnion of Soviet Socialist RepublicsIMO1970Competition recordBronze medalSSSergei ShikhBelarusIMO1995EPAM SystemsSoftware Engineering ManagerIndexed profileSSSergei SmirnovUnion of Soviet Socialist RepublicsIMO1963Competition recordSilver medalSSSergei SobolevUnion of Soviet Socialist RepublicsIMO1967 · 1968Competition recordBronze medal · Gold medalSSSergei StrukovUnion of Soviet Socialist RepublicsIMO1984Competition recordSilver medalSVSergei ValanderUnion of Soviet Socialist RepublicsIMO1965Competition recordGold medalSZSergei ZhukUkraineIOI1995GO Rentals New ZealandSenior Software DeveloperIndexed profileSFSergej FominUnion of Soviet Socialist RepublicsIMO1974Competition recordSilver medalSMSergej MironovUnion of Soviet Socialist RepublicsIMO1976Competition recordSilver medalSBSergejs BeļajevsLatviaIOI2005 · 2006Competition recordBronze medal · Silver medalIndexed profileSNSergejs NagibinsLatviaIOI1994Competition recordBronze medalSPSergejs PogorelovsLatviaIOI2004EvolutionIndexed profile
Semen DyatlovRussiaIOI2003Massachusetts Institute of TechnologyProfessor of MathematicsAutumn profileSSSemen SavkinRussiaIOI2020Competition recordGold medalIndexed profileSSSemen ShkilevichKazakhstanIOI2001Competition recordBronze medalSBSemih BasrıkTürkiyeIOI2013 · 2014NeticFull Stack EngineerIndexed profileSYSemih YavuzTürkiyeIMO2007 · 2008Competition recordBronze medalŞCŞemsi Cihan YücelTürkiyeIOI2001 · 2002Competition recordBronze medal · Silver medalIndexed profileSTSenkodan ThevendranSingaporeIMO1995 · 1996 · 1997LinkedInDirector of Business Operations & Strategy (APAC, EMEA & LATAM Talent and Learning Solutions)Indexed profileSLSen LinAustraliaIMO2007Competition recordHonourable mentionSCSeohyun ChoiRepublic of KoreaIOI2021셀렉트스타Data AssistantIndexed profileSMSeoirse MurrayIrelandIMO2014AI Security Institute (AISI)Red TeamIndexed profileSBSeojin ByunRepublic of KoreaIMO2026Competition recordGold medalSCSeokhwan ChoiRepublic of KoreaIOI2013 · 2014Samsung ElectronicsSoftware EngineerIndexed profileSHSeok Hyeong LeeRepublic of KoreaIMO2006 · 2007Competition recordGold medal · Silver medalSSSeongjin ShimRepublic of KoreaIMO2026Competition recordGold medalSASepehr AlipourIslamic Republic of IranIMO2024Competition recordSilver medalSepehr Ghazi NezamiIslamic Republic of IranIMO2009Renaissance Technologies LLCResearcherAutumn profileSMSepideh MahabadiIranIOI2007Competition recordGold medalSMSepidehsadat MirrahimiIslamic Republic of IranIMO2002Competition recordSilver medalSNSeppo NyrkköFinlandIOI1994Competition recordSilver medalSHSeptian HartonoIndonesiaIMO2003Singapore General HospitalSenior Medical PhysicistIndexed profileŞGŞerban GrigorescuRomaniaIMO1963Competition recordBronze medalŞNŞerban NacuRomaniaIMO1991 · 1992RobinhoodStaff Data ScientistAutumn profileŞSŞerban StrătilăRomaniaIMO1960 · 1961Competition recordBronze medal · Honourable mentionSASerdar AtayevTurkmenistanIMO2010Competition recordBronze medalSBSerdar BozdağTürkiyeIMO2023Center for Computational Life SciencesFounding DirectorIndexed profileSPSerdar PehlivanoğluTürkiyeIMO1998 · 1999Quick and Quality Coding and SoftwareChief Technology OfficerIndexed profileSKSergazy KalmurzayevKazakhstanIMO2012 · 2013 · 2014ElevenLabsEngineeringIndexed profileSBSerge BidallierFranceIMO2023 · 2024Competition recordBronze medalIndexed profileSBSergei BelkinUnion of Soviet Socialist RepublicsIMO1972Competition recordSilver medalSergei BerlovUnion of Soviet Socialist RepublicsIMO1988Physics and Mathematics Lyceum No. 239, Saint PetersburgMathematics teacherAutumn profileSFSergei FinashinUnion of Soviet Socialist RepublicsIMO1975 · 1976PMSCспециалистIndexed profileSGSergei GashkhovUnion of Soviet Socialist RepublicsIMO1971Competition recordGold medalSHSergei HlebutinUnion of Soviet Socialist RepublicsIMO1979Competition recordSilver medalIndexed profileSISergei IvanovUnion of Soviet Socialist RepublicsIMO1987 · 1988 · 1989Competition recordGold medalSKSergei KonyaginUnion of Soviet Socialist RepublicsIMO1972 · 1973Steklov Mathematical Instituteleading researcherIndexed profileSKSergei KuzmichBelarusIMO1992Competition recordBronze medalSLSergei LuchininRussian FederationIMO2018Сонтэк, Группа компанийСистемный администраторIndexed profileSMSergei MukhanovIOI2026Competition recordSilver medalSPSergei PatiakinUnited KingdomIMO2010EDBSenior Staff SDEIndexed profileSSSergei SaprikinUkraineIMO1992 · 1993NuRDSenior Java Software EngineerIndexed profileSSSergei SemenkovUnion of Soviet Socialist RepublicsIMO1970Competition recordBronze medalSSSergei ShikhBelarusIMO1995EPAM SystemsSoftware Engineering ManagerIndexed profileSSSergei SmirnovUnion of Soviet Socialist RepublicsIMO1963Competition recordSilver medalSSSergei SobolevUnion of Soviet Socialist RepublicsIMO1967 · 1968Competition recordBronze medal · Gold medalSSSergei StrukovUnion of Soviet Socialist RepublicsIMO1984Competition recordSilver medalSVSergei ValanderUnion of Soviet Socialist RepublicsIMO1965Competition recordGold medalSZSergei ZhukUkraineIOI1995GO Rentals New ZealandSenior Software DeveloperIndexed profileSFSergej FominUnion of Soviet Socialist RepublicsIMO1974Competition recordSilver medalSMSergej MironovUnion of Soviet Socialist RepublicsIMO1976Competition recordSilver medalSBSergejs BeļajevsLatviaIOI2005 · 2006Competition recordBronze medal · Silver medalIndexed profileSNSergejs NagibinsLatviaIOI1994Competition recordBronze medalSPSergejs PogorelovsLatviaIOI2004EvolutionIndexed profile