Efthymios Ntokas

I'm a Software Engineer at Databricks with a strong track record in international mathematical Olympiads (IMO, BMO) and experience in competitive programming (ICPC SEERC, EUC), consistently topping the national mathematical competitions (1st to 4th out of 14000 students). I have experience as a Software Engineer, Quant Analyst, Algorithm Developer and Researcher in diverse and competitive professional settings. My passion lies in algorithms and complex problem solving. Have graduated (with distinction) from NTUA with an Integrated (bachelors+masters) degree in Electrical and Computer Engineering. My degree emphasised on Computing, Algorithms, Distributed Systems and theoretical Computer Science.

Notes4

• Identity confirmed: LinkedIn efthymios-ntokas-752137239 reads 'Software Engineer at Databricks' and cites IMO/BMO Olympiads and ICPC SEERC/EUC; matches the IMO contestant record for Greece (contestant 28388), so the LinkedIn profile and the Olympiad identity are one person.2026
• Quant employment verification: CONFIRMED. Index enrichment of the person's LinkedIn shows an actual internship, 'Quantitative Analyst Intern' at Mathisys Technologies Hellas (Athens, 2023-11 to 2023-12): learnt the fundamentals of trading systems on the equity desk and built an extensive trading simulator enabling backtesting of HFT signals. Identity is supported by the same profile carrying the IMO record. Employer classification: Mathisys Technologies Hellas is a genuine quantitative-finance firm - its company page states it is 'a global quant firm specializing in high-frequency trading (HFT) strategies for various asset classes' and its site calls itself a 'Quantitative and Algorithmic Trading Research center'. A short, dated, real internship, not a student program or insight day.Dec 2023
• Only the Mathisys role is quantitative finance. Uber, AWS, Huawei, Adveos, Archimedes/Athena and Databricks are software-engineering or research roles; the current Databricks role (Object Storage) is a software-engineering role, so current quant employment cannot be inferred.2026
• Index-only employment record caveat: the full role timeline (Adveos 2022; Mathisys 2023; AWS Dublin 2024; Huawei Warsaw 2024-2025 via RockitWorks; Archimedes/Athena RC research intern 2025; Uber Amsterdam 2025-2026; Databricks Amsterdam 2026-) comes from index enrichment of the LinkedIn profile, not independently re-read LinkedIn pages; treat the dates as index-sourced, not primary-source re-confirmed.
• Education: Integrated Master of Engineering (MEng) in Computer Science / Electrical and Computer Engineering at the National Technical University of Athens (NTUA), 2020-2026, graduated with distinction per the profile bio.2026
• IMO results (primary source): contestant 28388 represented Greece in 2019 (Bronze, 20 pts, rank 245, 60.7%) and 2020 (Bronze, 18 pts, rank 248, 59.9%). A personal competition record, not employment.2020
• NTUA institutional repository lists a thesis by Efthymios Ntokas, 'Firefighting resource allocation algorithms based on predictions' (Greek name form Ευθύμιος Ντόκας), tying the person to NTUA research output.2026
• Competitive programming: NTUA team (Evangelos Pipis, Spyridon Galanopoulos, Efthymios Ntokas) competed at the ICPC 2024 European Championship and placed 11th at SEERC 2023 - competition records, not employment.2024