Jaroslav Petrucha

Jaroslav Petrucha is a Slovak software engineer. As a secondary-school student at Gymnazium Metodova in Bratislava he represented Slovakia at the International Olympiad in Informatics (IOI) 2013 in Brisbane, winning a bronze medal (294/600, 109th place). Per the LinkedIn/ClickHouse index (not an independent primary source), he studied Computer Science at Comenius University (Univerzita Komenskeho) in Bratislava to a Master's degree (2016-2018), interned as a Software Engineering Intern at Google in Zürich in 2015 and 2016, and worked in Site Reliability Engineering at Google in the Zürich area from 2018 to 2022. The same index lists a DevOps Engineer role at Wincent in Zurich in 2022 (Wincent is a high-frequency cryptocurrency market-making firm headquartered in Switzerland, per Wincent's own site), after which the index again lists him in the Google SRE role from 2022. Based in Eppenberg-Woschnau, Solothurn, Switzerland. Employment dates and roles below are index-derived unless otherwise noted.

Notes3

• Quant employment verification: UNRESOLVED. The LinkedIn/ClickHouse index lists a DevOps Engineer role at Wincent (Zurich, Switzerland, 2022-02 to 2022-05) for this subject, but the role appears only in that index, with no independent primary source naming this individual at Wincent, and the identity-to-role link rests on that same index. Employer classification IS confirmed from Wincent's own site - it self-describes as a high-frequency cryptocurrency market maker and liquidity provider (founded 2017, ~$5bn notional/day, 15+ venues, in-house low-latency infra) - so Wincent is genuinely a quant/HFT crypto trading firm, not merely a name containing 'quant'. Since the role itself is index-only, an actual past role is not independently established; retained as uncertain rather than CONFIRMED.2022
• Identity: Jaroslav Petrucha, Slovakia; IOI 2013 contestant for Slovakia and bronze medallist, a student of Gymnazium Metodova, Bratislava. This aligns with the LinkedIn subject (Comenius University Bratislava, Slovakia) and is the anchor for the Olympiad identity.Jul 2013
• Wincent is a genuine quantitative/HFT employer: its About page calls it a 'high-frequency trading firm focused on digital assets', operating since 2017, executing ~500,000 trades and ~$5bn notional/day across 100+ assets and 15+ venues with in-house low-latency infrastructure; its home page calls it a 'high-frequency cryptocurrency market maker and liquidity provider'. This confirms employer classification independent of any individual's employment.Jul 31, 2026
• Index-listed career: Software Engineer, Site Reliability Engineering at Google since 2018 (Zürich Area, Switzerland), with two Google Software Engineering internships in 2015-2016; Master's in Computer Science at Comenius University Bratislava, 2016-2018; a DevOps Engineer role at Wincent (Zurich, 2022) sits between the Google tenures.
• Index-only claim: Google SRE (Zürich) 2018-2022 and the return to Google from 2022, the two Google SWE internships (2015, 2016), and the Wincent DevOps role all come solely from the LinkedIn/ClickHouse index; no independent primary source in this run names this subject at Google or Wincent.
• Zenit: index lists a 'Member of scientific committee' role for the National competition Zenit (Slovak Republic, 2016-2018), authoring programming problems and verifying implementations - a volunteer/community role alongside his studies, not employment.2018