Rezwan Arefin

Rezwan Arefin is a Bangladeshi competitive programmer, originally from Dhaka, who represented Bangladesh at the International Olympiad in Informatics in 2018, 2019 and 2020, winning a bronze medal each year. He studied Computer Science at the National University of Singapore, graduating in June 2025 with the Lee Kuan Yew Gold Medal for Best Graduate Throughout the Course of Study, plus focus-area distinctions in Algorithms & Theory and Parallel Computing and repeated Dean's List placements. He is a Codeforces Grandmaster (handle RezwanArefin01) and has contributed to competitive-programming infrastructure (CMS) and NUS course repositories. His LinkedIn headline states an incoming Software Engineer offer at Jane Street; no primary source confirms an actually started role and no dates are established.

Notes10

• Quant employment verification: UNRESOLVED. The only evidence of any Jane Street role is Rezwan Arefin's own self-authored LinkedIn headline 'Incoming SWE @ Jane Street | CS @ NUS | IOI Medalist' (index-sourced enrichment). It states an incoming/inbound Software Engineer offer, i.e. a future role not evidenced as an actual past or present internship/employment, and the index listed Jane Street only under past_employers with no dates. Jane Street is confirmed as a genuine quantitative proprietary trading firm/market maker (not merely 'quant' in name). No primary source (company page, offer/start announcement, signed role, dated post) confirms an actual role or internship, and no dates are established, so a CONFIRMED finding is not supported; identity is corroborated but employment evidence is limited to an unstarted/incoming offer.
• Awarded the NUS Lee Kuan Yew Gold Medal (Best Graduate Throughout the Course of Study) from the NUS School of Computing, dated 7 June 2025 - the top graduating-student honour at NUS, marking him as the single best-performing graduate of his cohort.
• IOI record for Rezwan Arefin (Bangladesh): three bronze medals, at IOI 2018, IOI 2019, and IOI 2020 - the IOI statistics page lists 0 gold, 0 silver, 3 bronze. Confirms the Olympiad identity in the brief and that his only IOI medals are bronze (not the silver/gold some Bangladesh team posts describe for other years).
• Graduated NUS School of Computing with a Bachelor of Computing (Computer Science); earned Distinction in two focus areas - Algorithms & Theory (Aug 2023) and Parallel Computing (June 2024) - and repeated Dean's List placements (AY2022/2023 Sem 2, AY2023/2024 Sem 1 and Sem 2), plus a Top Student certificate in Software Engineering (top of a class of 400, AY2022/23 Sem 1). The distinction between algorithms/parallel-computing focus and repeated honours is a strong signal of an engineering-theory specialist rather than a systems-only profile.
• Ranked among the top competitive programmers from Bangladesh: Codeforces handle RezwanArefin01 reached Grandmaster (red), described as the youngest grandmaster from Bangladesh at the time. His Codeforces profile lists Dhaka, Bangladesh as origin and NUS as his university.
• Distinct namesakes exist and must not be conflated: a different 'Rezwan Arefin' (linkedin.com/in/rezwanarefin) is Lead IoT Product Manager at Grameenphone in Bangladesh, and 'SM Rezwan Ul Arefin' is a director at Pidex Limited - neither is the IOI/NUS subject here. His correct LinkedIn is linkedin.com/in/rezwanarefin01.
• Maintains a Codeforces blog (rezwanarefin01) and authored algorithm tutorials/editorials, e.g. solutions using the Aliens' Trick / Lagrangian optimization - typical of a high-rated competitive programmer who writes up techniques rather than only competing.
• Contributed to the CMS (Contest Management System) open-source project - filed/featured in cms-dev/cms issue #12 ('Option to stop evaluation of a subtask on first 0 score'), consistent with his involvement in competitive-programming infrastructure beyond just competing.
• GitHub presence (RezwanArefin01) is mainly competitive-programming material - e.g. the 'CodeTemplate' repo of personal code templates; no evidence of quantitative-finance, trading, or research repositories was found.
• Contributed to NUS CS2103 software-engineering course repository (nus-cs2103-AY2223S1/ip) with pull requests under handle RezwanArefin01, corroborating the GitHub handle and NUS enrolment in AY2022/23.
• Held a Teaching Assistant role at NUS (index-sourced current role, no dates) alongside studies, and self-describes on a personal WordPress blog as 'Trying out new things in life'; the blog is a stock WordPress with only example posts and no substantive content.