Fatih Solak

Turkish software engineer and competitive programmer. IOI 2022 Bronze and IOI 2023 Silver medalist for Türkiye; Computer Engineering student at Boğaziçi University with software-engineering and quantitative-developer internships at Chainway Labs, TankX and Lighter.

Notes6

• Quant employment verification: CONFIRMED. Fatih Solak's LinkedIn-derived profile (index record taiga-1131311428) lists a Quantitative Developer Intern role at TankX from 2025, and the tankx.co site independently states TankX is 'a global high-frequency trading firm and a liquidity provider specializing in the digital asset space' expanding into FX and fixed income. An HFT/liquidity-provider internship in digital-asset/FX markets is an actual quantitative-finance role, so the employer classification is primary-source-confirmed even though the specific role title rests on the index record (LinkedIn), not an independent page.2025
• Employment timeline across three blockchain/trading firms: Chainway Labs (Software Engineer Intern, 2024), TankX (Quantitative Developer Intern, 2025), Lighter (Software Engineer Intern, 2026-), a progression from ZK-rollup infrastructure toward trading systems; all three roles are internships, not full-time positions. Dates and titles are index-only (LinkedIn-derived) and no primary source independently confirms the start/end months.2026
• Lighter (lighter.xyz) is a zero-knowledge rollup decentralized exchange for perpetuals with an on-chain matching engine processing tens of thousands of orders per second; the role held there is titled Software Engineer Intern (2026-), an engineering rather than quantitative-trading title, though the firm operates in crypto derivatives trading. Lighter raised $68M at a $1.5B valuation in Nov 2025 (Founders Fund, Ribbit Capital, Haun Ventures, Robinhood).2026
• TankX (tankx.co) is a genuine high-frequency trading and digital-asset liquidity provider with Istanbul (2023) and London offices, founded by Erdener Tamer (co-founder & COO Emre Demir) around Mar 2023; it describes data-intensive statistical modeling and low-latency execution, so it operates in quantitative finance rather than merely containing 'quant' in a name.2025
• Won a Bronze medal at IOI 2022 (Indonesia) representing Türkiye as TUR2 with 254 points, and a Silver medal at IOI 2023 (Hungary) as TUR1 with 284 points, confirming the olympiad identity that the profile is keyed to.Sep 4, 2023
• Identity is distinguishable from the many other Turkish 'Fatih Solak' namesakes (notably a basketball player born 1980): the target is the IOI competitor with Codeforces handle FatihSolak, educated at Bahcesehir High School for Science and Technology and Boğaziçi University Computer Engineering, based in İstanbul.2022
• Chainway Labs (chainway.xyz) builds Citrea, described as Bitcoin's first ZK rollup, and is a blockchain/zero-knowledge infrastructure company, not a quantitative-finance firm; the 2024 Software Engineer Intern role there is a software-engineering position.2024
• Codeforces profile FatihSolak records Bahcesehir High School for Science and Technology as his school, corroborating the high-school identity link from the LinkedIn index record.2022