Tuukka Korhonen

Tuukka Korhonen is a theoretical computer scientist working on graph algorithms and parameterized complexity, currently a Marie Sklodowska-Curie postdoctoral fellow at BARC, University of Copenhagen. He represented Finland at the IOI 2015 (bronze) and reached the ICPC World Finals in 2016 and 2017, then earned bachelor's and master's degrees at the University of Helsinki and a PhD at the University of Bergen (defended May 2024). His industry experience consists of two software internships, at Jane Street (2017) and Google Zurich (2018).

Notes8

• Quant employment verification: CONFIRMED. The subject's LinkedIn profile (index record) lists a Software Developer Intern role at Jane Street, London, in 2017, described as 'Software developing in OCaml'. Jane Street is a proprietary quantitative trading firm and market maker, so this is an actual past internship at a quant firm, not a student program, competition or insight day. Identity support: the same profile shows University of Helsinki education and a 2018 Google Zurich internship, and the IOI 2015 Finland competitor is independently anchored to Codeforces handle 'Laakeri' and personal site tuukkakorhonen.com. Caveat: the exact internship months (lead says 2017-07 to 2017-09) are not corroborated by any primary source; the role itself rests on a LinkedIn-index record, not an independently read primary page.2017
• Identity anchor: the Codeforces handle 'Laakeri' (rating max 2721) links to personal site tuukkakorhonen.com; the IOI statistics profile (people/5589) lists the same Codeforces handle, tying the IOI 2015 Finland competitor to the algorithmic researcher (ORCID 0000-0003-0861-6515).2026
• Index-only sourcing note: the Jane Street (2017) and Google Zurich (2018) internships, the degree dates, and the 'Research Assistant 2016-2021' entry derive from LinkedIn profile index records (aggregator data), not independently read primary pages. Public primary sources (personal site tuukkakorhonen.com, IOI statistics, CPHOF, University of Helsinki and BARC pages) independently confirm the academic identity, IOI 2015 bronze, PACE 2020 second place, the best-thesis award and the Marie Sklodowska-Curie postdoc, but do not document the internships.2026
• Employer classification: Jane Street is a quantitative trading firm/market maker (proprietary trading in equities, bonds, FX and commodities) - a genuine quant-finance employer, not a firm merely named 'quant'. Google is a technology company, not a quant-finance employer. No bank, asset manager, energy or crypto trading employer appears anywhere in the record.2026
• Marie Sklodowska-Curie postdoctoral fellow at BARC (Basic Algorithms Research Copenhagen) at the University of Copenhagen; current role since 2024.2024
• Public contact email [contact omitted] published on his personal site (University of Copenhagen).2026
• Career timeline is entirely academic from 2021 onward: PhD at University of Bergen (2021-2024) then postdoc at University of Copenhagen (2024-); the only industry roles on record are the two internships (Jane Street 2017, Google 2018), both before the PhD.2026
• Active researcher through 2026: two FOCS 2026 papers (connectivity augmentation with Mikkel Thorup; branch-width with Sang-il Oum), plus STOC 2026 and SODA 2026 papers, and a scheduled Aalto CS special seminar on 2026-04-01.2026
• The public record shows no return to industry after 2018: the post-internship years (2019-2026) are all academic (Helsinki research assistantship, Bergen PhD 2021-2024, Copenhagen postdoc 2024-), so the Jane Street internship is the single quant-finance data point and it is historical, not current.2026
• Defended PhD in May 2024 at the University of Bergen, supervised by Fedor V. Fomin; PhD thesis titled 'Finding Optimal Tree Decompositions'.May 2024
• Won the award for the best Finnish computer science master's thesis of 2019-2020 (University of Helsinki news).2020
• Represented Finland at the IOI 2015, winning a bronze medal; also ICPC World Finals 2016 (20th) and 2017 (17th) with University of Helsinki teams.2015