Petar Nyagolov

Petar Nyagolov (Bulgaria) won a bronze medal at the International Olympiad in Informatics 2017 (score 148.04). Publicly, he is a Sofia-based backend software engineer who has held engineering roles at Trading 212, Hopper and Leanplum, and is listed (index-only) as a Senior Software Engineer at DraftKings Inc. since 2025. None of his publicly listed employers is a quantitative investment, hedge-fund or market-making firm.

Notes9

• Quant employment verification: NOT CONFIRMED. No public evidence supports any job or internship at a quantitative investment, hedge-fund, market-making or systematic/algorithmic trading firm. His publicly listed employers are Trading 212 (UK retail investment/CFD broker platform - a consumer brokerage, not a quant fund or prop trading desk), Leanplum (mobile-marketing SaaS), Hopper (travel-tech) and DraftKings (sports betting/gaming; index-sourced). None is classified as quantitative finance; no bank, asset manager, energy-trading or crypto-trading employer appears. Identity is supported (LinkedIn headline and IOI record both tie him to IOI 2017 Bulgaria), but the quant-employment claim itself is unsupported.2026
• Employer classification: across Trading 212 (retail broker), Leanplum (marketing SaaS), Hopper (travel tech) and DraftKings (sports betting/gaming), none is a quantitative investment, hedge-fund, market-making or systematic/algorithmic trading firm; no bank, asset manager or energy/crypto trading employer appears.2026
• His LinkedIn headline is literally 'IOI 2017 Bronze Medalist', which is the strongest self-published cross-link tying the software engineer in Sofia to the IOI 2017 Bulgaria contestant.2025
• Index-sourced (LinkedIn) employment: Senior Software Engineer at DraftKings Inc. from 2025, working remotely; this is an index-only claim, not independently confirmed by a primary source.2025
• Index-sourced employment: Java Backend Engineer at Trading 212 in Sofia, 2020-2021 (caller lead gave 2020-07 to 2021-10). Trading 212 is a UK-regulated retail investment/CFD broker platform; the role was backend software engineering, not a quantitative trading, market-making or hedge-fund role.2021
• Won a bronze medal for Bulgaria at the International Olympiad in Informatics 2017 with a score of 148.04 (ranked 143-148 region of the standings).2017
• Index-sourced employment: Scala Backend Engineer at Hopper (travel platform) in Sofia, 2021-2023. Hopper is a travel/online-travel-agency technology company, not a quantitative finance firm.2023
• IOI profile (contestant #6179) lists him as a 2017 Bulgaria contestant with a linked CodeForces handle; his only IOI participation shown is 2017.2017
• A public GitHub Pages portfolio psnfolio.com belongs to a DIFFERENT Petar Nyagolov (a product design leader at Bloomberg Law) and should not be conflated with this software engineer; several directory hits (Zoominfo, RocketReach) describe that namesake.2025
• GitHub account Peshooo (16 followers) belongs to Petar Nyagolov and holds competitive-programming and machine-learning work, including solutions to oj.uz olympiad problems and a small ML library.2024
• Index-sourced employment: Java Backend Engineer at Leanplum, 2019-2020, after a 2019 Software Engineering Internship there. Leanplum is a mobile marketing/engagement software company, not a finance firm.2020
• Codeforces account P_Nyagolov identifies him as 'Petar Nyagolov, Rousse, Bulgaria' from MG Baba Tonka Ruse, placing his secondary education at the Baba Tonka mathematics high school in Ruse.2017