Erlang Wiratama Surya

Erlang Wiratama Surya is an Indonesian mathematician and quantitative researcher. He represented Indonesia at the International Mathematical Olympiad in 2015 (bronze) and 2016 (silver), then studied mathematics at the University of Waterloo (BMath, Pure Mathematics and Combinatorics & Optimization), the University of Cambridge (Part III, Masters of Advanced Study), and pursued doctoral study at Georgia Tech and UC San Diego in combinatorics/random graph processes. Since July 2025 he has worked as a Quantitative Researcher at Xantium Group - Tudor Investment Corporation in New York, after a 2024 Quantitative Researcher internship at Optiver.

Notes12

• Quant employment verification: CONFIRMED. Index/LinkedIn data lists a current role as Quantitative Researcher at Xantium Group - Tudor Investment Corporation (started 2025-07, New York) and a past Quantitative Researcher Internship at Optiver (2024-06 to 2024-08). Both employers operate in quantitative finance: Optiver is a global market maker and proprietary options trading firm, and Xantium is a global multi-strategy investment firm founded in 2019 as part of Tudor Group that trades equities, futures, options, FX, bonds and commodities using quantitative research. Identity is supported by the matching name plus the Waterloo/Cambridge/UCSD mathematics education on the same profile and the IMO Indonesia record. Caveat: both roles rest on index/LinkedIn data only and are NOT independently confirmed by the employers' own pages (Xantium's team page does not name him).
• Employer Xantium Group describes itself as founded in 2019 as part of Tudor Group, a global multi-strategy investment firm with 200+ people across London, New York, Salt Lake City, Abu Dhabi and San Francisco, trading equities, futures, options, FX, bonds and commodities - i.e. a genuine quantitative/multi-strategy hedge-fund operation, not merely a name containing 'quant'.
• Optiver, where he interned as a Quantitative Researcher in summer 2024, is a global market-making / proprietary trading firm - an actual quantitative finance employer.Aug 2024
• Represented Indonesia at the International Mathematical Olympiad in 2015 (Bronze medal, 16 points, individual rank 183) and 2016 (Silver medal, 23 points, individual rank 114).Jul 2016
• Press reported Tudor Investment to spin out Xantium Group, consistent with Xantium being a Tudor-affiliated entity rather than an unrelated firm sharing a name.Jul 2025
• Undergraduate degree: Bachelor of Mathematics, Pure Mathematics and Combinatorics & Optimization, University of Waterloo.
• Doctoral work in mathematics at UC San Diego in combinatorics/random graph processes; the Mathematics Genealogy Project records his doctoral entry (id 336048), and his UCSD advisor's page covers phase transitions, combinatorial probability and random graphs.
• Xantium's own 'Our Team' page emphasizes recruits with expertise in analytic number theory, string theory or deep learning and does not list individual researchers, so his current role is not corroborated by a primary company page and must be labelled index-only.
• University of Cambridge Part III Masters of Advanced Study in Mathematics (the one-year MASt), a well-known stepping stone for competitive mathematicians.
• Enrolled as a PhD student in Mathematics (Algorithms, Combinatorics & Optimization) at Georgia Institute of Technology before/alongside doctoral study at UC San Diego - the profile lists both, suggesting a transfer of doctoral institution.
• Google Scholar author profile ('Erlang Surya', UC San Diego mathematics) shows 73 citations, h-index 5, i10-index 3, with output concentrated on random structures and combinatorial probability - evidence of a real research program, not just coursework.
• A second LinkedIn profile ('Erlang Wiratama Surya', Waterloo, Ontario) exists on people-search data; the primary, enriched profile (erlang-surya-b699a1263) carries the Xantium role and the Waterloo/Cambridge/UCSD education, so the full legal name maps onto the quant profile via the shared Waterloo mathematics context rather than an explicit cross-link.