Loke Gustafsson

I spent most of my time in high school doing competitive programming and mathematics, culminating in participating in the international olympiads for both. Nowadays I study mathematics, physics and computer science at Chalmers, while also dedicating significant time to personal projects. I play CTF, recently as part of the Swedish team achieving 6th place in the European Cyber Security Challenge 2022.

Notes8

• Quant employment verification: CONFIRMED. Employment evidence: LinkedIn lists a full-time Software Engineer role at Jane Street (oct 2025-present) and a Software Engineering Intern stint at Jane Street (London, 2024), plus a Software Engineering Intern stint at Google (Dublin, 2023); identity is supported by the GitHub/IMO/Chalmers cross-links above. Employer classification: Jane Street is a quantitative trading firm and market maker, so the roles are quant-finance-adjacent (corporate software engineering, not a trading-desk/trader title). Caveat: the Jane Street role evidence is index-only (LinkedIn-derived), so it is not independently primary-source confirmed and carries that residual uncertainty.Sep 17, 2026
• Identity corroborated across three independent surfaces: the LinkedIn profile (linkedin.com/in/loke-gustafsson-385376178), the GitHub account github.com/lokegustafsson, and the IMO 2019/2020 Sweden team listings all resolve to the same person; the LinkedIn-derived index record pairs the LinkedIn and GitHub links, and both name Loke Gustafsson of Gothenburg/Chalmers.Sep 17, 2026
• Career timeline (index-only, LinkedIn-derived): Software Engineering Intern at Google, Dublin (2023); Software Engineering Intern at Jane Street, London (2024); Software Engineer at Jane Street (oct 2025-present). All three are software-engineering roles; no quantitative-research, trading, or market-making title appears.Sep 17, 2026
• Co-author of the master's thesis / paper 'Oatlog: A performant ahead-of-time compiled e-graph engine' (EGRAPHS 2025), listed at Chalmers STAR lab under Loke Gustafsson and Erik Magnusson; the open-source engine is at github.com/oatlog/oatlog.Jun 1, 2025
• IMO 2019 (Sweden): honourable mention, 11 points, rank 386 of 621 (P1 7, P4 1, P5 2) per imo-official team results.Jul 1, 2019
• IMO 2020 (Sweden): team member, rank 294 with 52.4% score per imo-official team results.Sep 1, 2020
• International Olympiad in Informatics (IOI) contestant record under the name Loke Gustafsson (stats.ioinformatics.org/people/7276).
• Education (index-only, LinkedIn-derived): Master of Engineering (MEng), Engineering Mathematics, Chalmers (2023-2025); Bachelor of Engineering (BE), Engineering Mathematics, Chalmers (2020-2023); high-school diploma, Natural Sciences, Kattegattgymnasiet, Halmstad (2017-2020).
• Codeforces handle 'Loke85' (display 'lokeg') with a max contest rating of 1952, from Chalmers University of Technology.
• Placed 3rd on-site at the Code@LTH 'LTH Challenge' (per Code@LTH announcement).
• GitHub profile github.com/lokegustafsson: 30 followers, 23 public repos, account created 2015-11-27, location Gothenburg, Sweden; bio 'We do what we must because we can'.