Pontakorn Prasertsuk
Pontakorn Prasertsuk is a computer scientist from Nonthaburi, Thailand, who studied Computer Science at the National University of Singapore (2021-2025), specializing in algorithm theory and parallel computing. A competitive programmer since before university, he represented Thailand at IOI 2020 (bronze medal) and worked as a software engineer intern at Jane Street and DRW on low-latency trading systems, as well as at CVWO.
- Quant employment verification: CONFIRMED. The resume PDF and personal site ptk.prasertsuk.com both document Software Engineer Intern at Jane Street (May-Jul 2024) and Software Developer Intern at DRW (May-Jul 2023). Jane Street is a quantitative trading firm and market maker; DRW is a proprietary/principal trading firm. Identity is supported by cross-linked LinkedIn, GitHub (peppapighs), personal site and the IOI 2020 Thailand record. Student-only programs are not the basis here: both are actual internship roles. Separately, LinkedIn/index report a current full-time Software Engineer role at Jane Street from Sep 2025.Jul 31, 2024
- LinkedIn and the professional index report a current Software Engineer role at Jane Street from Sep 2025 in Hong Kong; his own site (as of his portfolio) describes Jane Street and DRW as previous internships. Treat the current full-time role as index/LinkedIn-reported, not independently confirmed by a non-index source.Sep 1, 2025
- Trajectory read across sources: his two trading-firm roles were summer internships (DRW 2023, Jane Street 2024) taken during his NUS degree, and LinkedIn/index place a full-time Software Engineer role at Jane Street from Sep 2025, months after his May 2025 graduation - a progression from trading-firm internships to a trading-firm graduate role.Sep 1, 2025
- Software Engineer Intern at Jane Street (May-Jul 2024): built an OCaml/TailwindCSS web app letting client-facing traders perform manual actions on institutional counterparty orders, and implemented a shared-memory data structure in OCaml to improve trading-platform latency and reliability - quant-trading infrastructure work, not a student program.Jul 31, 2024
- Software Developer Intern at DRW (May-Jul 2023): low-latency C++ work - SWAR string-integer conversion (~50% faster), SIMD UUID conversion for market-data processing, a hash function cutting collisions ~10x, scatter/gather I/O in OpenSSL (up to 60% latency gain), a Python signal trading simulator, and a Curl patch reducing TLS records under HTTP/2.Jul 31, 2023
- IOI 2020 contestant for Thailand, Bronze Medal, total score 250.32, absolute rank 154/343 - the identity anchor matching the caller-provided Olympiad identity.Sep 30, 2020
- Public contact details published on his resume: email [contact omitted] and phone (+65) 8887 7280 - self-published, suitable for outreach.
- NUS Bachelor of Computing in Computer Science, Aug 2021 - May 2025, specializing in Algorithm Theory and Parallel Computing; relevant coursework includes Parallel & Concurrent Programming, Competitive Programming, Operating Systems, Computer Networks, and Design & Analysis of Algorithms.May 31, 2025
- Contributed a C patch to Curl optimizing HTTP/2 by reducing the number of TLS records transmitted - an upstream open-source contribution to a widely used library.
- His portfolio project set (C/C++/OCaml low-level libraries, an HTTP/2 client, a Curl patch, SIMD/SWAR optimization) is thematically consistent with the market-data and latency work described in his DRW and Jane Street internships, suggesting a deliberate performance-engineering focus rather than generic full-stack work.
- Listed as a contributor to the SPLASH 2025 talk/paper 'Evolving How We Teach Memory Models' (country: Singapore), indicating academic/conference activity in programming-languages education.Oct 31, 2025
- ICPC Asia Jakarta Onsite Regional Contest 2023: Silver Medal, Top 5 Team - competitive-programming result at university level.Dec 31, 2023
Developed a client-facing web application in OCaml and TailwindCSS for traders to perform manual actions on institutional orders; implemented a performant shared-memory data structure in OCaml improving trading-platform latency/reliability.
C++ SWAR string-integer conversion (~50% faster); SIMD UUID conversion for market-data processing; high-speed hash function (~10x fewer collisions); scatter/gather I/O in OpenSSL (up to 60% latency improvement); Python signal trading simulator; contributed a Curl C patch reducing TLS records under HTTP/2.
Implemented two-factor authentication across 5 applications with Singpass; built a React case-management frontend; maintained PostgreSQL/MySQL relational database in Ruby on Rails.
Core developer on Thai competitive-programming platform programming.in.th.
Competition record
Thailand · IOI