Jacob Teo

Software engineer at Cognition working on Devin, and a named author on the company's SWE-1.5 and SWE-1.7 coding models. Singaporean; MIT Class of 2025 (Course 6-3). Three-time IOI contestant for Singapore (gold 2016, silver 2015 and 2018). Prior internships span quantitative research/trading at Jump Trading, software engineering at Anysphere (Cursor) and Emerald Innovations, crypto quant at AlphaLab Capital (Caladan), and research at the Research Science Institute (2017, arXiv paper with Jelani Nelson).

Notes11

• Quant employment verification note: VERDICT UNRESOLVED. Evidence rests on the LinkedIn/index profile (index-only, unverified against the primary LinkedIn page). Reported roles: Quantitative Research Intern, Jump Trading Group (2024, Chicago) and Quantitative Trading Intern, Jump Trading LLC (2023, Chicago) - Jump Trading is a quantitative/market-making prop trading firm, so those titles are qant-finance roles if the employment is genuine. AlphaLab Capital (2020-2021) is a Singapore crypto prop trading/market-making firm (now Caladan), so that internship is also quant-finance adjacent. No independent primary-source document (offer letter, firm page, news) confirms these internships; identity is supported (LinkedIn url jacobtpl matches IOI/MIT traces). Because the roles are internship-level and the sole source is the enrichment index rather than the primary firm, the claim is UNRESOLVED rather than CONFIRMED.
• Jump Trading internships: Quantitative Research Intern (2024, Chicago; alpha research on HFT equities and mid-frequency options) and Quantitative Trading Intern (2023, Chicago; market microstructure and execution) - both index-only from LinkedIn, subject to 'Quant employment verification' note.
• Quant employment verification: UNRESOLVED - see dedicated note.
• Named author on Cognition's SWE-1.7 model release (published 2026-07-08) and SWE-1.5 (2025-10-29), indicating involvement in the company's frontier coding-model training pipeline, not just product engineering.Jul 8, 2026
• LinkedIn profile: Software Engineer at Cognition, described as 'Building Devin'. The enrichment index reported company_domain as docuhub.io, a placeholder that does NOT match Cognition (cognition.com/cognition.ai) - index-only claim, corrected on this row.
• AlphaLab Capital internship (2020-2021, Singapore) on automated market maker price mechanisms and mid-frequency crypto quant strategies; the firm rebranded to Caladan and is a crypto proprietary trading/market-making group (was one of the earliest digital-asset market makers) - so it is a genuine quantitative trading employer.
• Presented 'Inside DeepWiki' at a LangChain SF meetup (2026-08-21), describing the auto-generated codebase-documentation system behind Devin - a public-facing research/engineering role at Cognition.Aug 21, 2026
• 2017 Research Science Institute project with Jelani Nelson and Huacheng Yu produced arXiv:1709.09574 'Fillable arrays with constant time operations and a single bit of redundancy' (2017-09-27), authored under 'Jacob Teo Por Loong, NUS High School'.Sep 27, 2017
• IOI record: gold medal 2016 (Singapore), silver 2015, silver 2018; competed 2015-2018 for Singapore, student at NUS High School of Mathematics & Science.
• Software Engineer Intern at Anysphere (Cursor) in 2024, 'Building Cursor / Fine-tuning new models for Cursor Tab' - index-only from LinkedIn.
• MIT Course 6-3 (Computer Science and Engineering), Class of 2025; member of MIT's LMF (Living/Learning community) Class of 2025, described as 'a 6-3/18 from Singapore' (though born in the US and having lived in several countries).
• Won HackMIT 2023 as part of a team building 'Muse', a search tool (per teammate Dylan Walker's post).