Maksym Zub

Maksym (Maxym) Zub is a Theoretical Computer Science student at Jagiellonian University in Cracow, Poland, working as a Blockchain Developer at Cardinal Cryptography. He represented Ukraine at the International Olympiad in Informatics (IOI) 2019, earning a bronze medal. His LinkedIn profile also lists a 2023 Software Engineer role at Citadel in London, a 2022 Back End Developer role at a cryptocurrency exchange, and a 2021 R&D internship at Huawei.

Notes8

• Quant employment verification: CONFIRMED. Maksym Zub's LinkedIn profile (linked from his own GitHub and Linktree, confirming identity) lists a Software Engineer role at Citadel in London from Jun 2023 to Sep 2023. Citadel LLC is a major quantitative hedge fund (its affiliate Citadel Securities is a market maker), so the employer operates in quantitative finance. The listed role is software engineering rather than a quant-research or trading title, and the ~3-month window is consistent with a summer internship. Caveat: the role is self-reported on his LinkedIn profile only; no independent Citadel-side or third-party primary source corroborating the employment was found, so the claim rests on his own published profile plus supported identity.Jun 2023
• LinkedIn lists a Software Engineer role at Citadel (London) running Jun 2023 - Sep 2023 - a roughly three-month summer window consistent with an internship rather than a permanent role; Citadel LLC is a quantitative hedge fund (and Citadel Securities a market maker), though the listed role is software engineering, not a trading or quant-research title.Jun 2023
• Maksym Zub represented Ukraine at the International Olympiad in Informatics (IOI) 2019 and won a bronze medal (rank 134), confirmed by the official IOI statistics site.Aug 11, 2019
• Works as a Blockchain Developer at Cardinal Cryptography (Cracow, the development company behind the Aleph Zero blockchain) since Oct 2023; the company's own org listing shows him on its Blockchain Development team.Oct 2023
• His personal site states he is a part-time software engineer interested in cryptography and especially zero-knowledge proof (ZKP) research and development, and that he is 'currently developing zkp-powered cool things in Aleph Zero'.
• Co-authored the research paper 'Learning-Augmented Maximum Flow' with Adam Polak (submitted to arXiv July 2022, published in Information Processing Letters, 2024), placing his graduate work in the algorithms-with-predictions area.Jul 26, 2022
• Holds a Bachelor's (2019-2022) and Master's (2022-2024) in Theoretical Computer Science from Jagiellonian University, Cracow.
• His GitHub account kroist (48 public repos, 44 followers) links the LinkedIn profile, forming the cross-link loop that confirms the GitHub, LinkedIn and IOI identities belong to one person.
• A 2022 Back End Developer role is listed at an employer recorded only as 'Cryptocurrency Exchange' with no company name, so the exchange itself cannot be identified or classified as quantitative trading from available sources.2022
• Completed an R&D Internship at Huawei in Warsaw, Poland in 2021.2021
• His Codeforces handle is MaxZubec (rating tier Expert), with country Ukraine and city Kremenchuk, and an affiliation of Jagiellonian University, tying the competitive-programming identity to the Cracow student.
• A Linktree profile under the handle 'zubec' links his LinkedIn, GitHub, Telegram (t.me/kroist_zubec) and Twitter (@MaxZub3), the fullest self-curated set of his public handles.