{"version":1,"id":"keita-kuroiwa","title":"Keita Kuroiwa","summary":"Keita Kuroiwa is a software engineer and entrepreneur known for developing Ethereum protocols and founding Flovia, an API group-purchasing company.","content":"**Keita Kuroiwa** is a software engineer and entrepreneur who founded [Flovia](https://iq.wiki/wiki/flovia), a company focused on reducing API costs through pooled purchasing, and became its chief executive in 2026.[\\[1\\]](#cite-id-37p09pm6q1)​[\\[2\\]](#cite-id-s2lm39anvj) He has worked on [Ethereum](https://iq.wiki/wiki/ethereum) protocols and [staking](https://iq.wiki/wiki/staking) infrastructure and has held roles at Deloitte, Fracton Ventures, Obol Association, and the [Ethereum Foundation](https://iq.wiki/wiki/ethereum-foundation-ef).[\\[1\\]](#cite-id-37p09pm6q1)​[\\[3\\]](#cite-id-gacj7ikhmt)​\n\n## Education\n\nKuroiwa studied statistics, behavioral science, and human science at Keio University in Japan from 2018 to 2023, earning a bachelor’s degree.[\\[1\\]](#cite-id-37p09pm6q1)​[\\[3\\]](#cite-id-gacj7ikhmt) His studies also included game theory and behavioral economics.[\\[1\\]](#cite-id-37p09pm6q1) He received an AWS Certified Machine Learning certification in April 2023 and a Tokyo University [blockchain](https://iq.wiki/wiki/blockchain) certificate in November 2023.[\\[1\\]](#cite-id-37p09pm6q1)​\n\n## Career\n\nKuroiwa worked as a software engineer in Deloitte’s startup-accelerator department from April 2023 to May 2024.[\\[1\\]](#cite-id-37p09pm6q1)​[\\[3\\]](#cite-id-gacj7ikhmt) He says his work involved research into machine learning, machine-to-machine messaging and payments, cryptography, and verification technologies, as well as mentoring artificial intelligence and [cryptocurrency](https://iq.wiki/wiki/cryptocurrency) startups.[\\[1\\]](#cite-id-37p09pm6q1)​\n\nFrom 2024 to early 2026, Kuroiwa was an entrepreneur-in-residence and software engineer at Fracton Ventures, an [Ethereum](https://iq.wiki/wiki/ethereum) incubator.[\\[1\\]](#cite-id-37p09pm6q1)​[\\[3\\]](#cite-id-gacj7ikhmt) He says he co-built more than 20 protocols there and researched machine payments, behavioral science, game theory, and [Ethereum](https://iq.wiki/wiki/ethereum) protocols.[\\[1\\]](#cite-id-37p09pm6q1) He has described his broader protocol work as spanning machine payments, impact evaluation, statistics, and causal inference, and says protocols he helped build raised more than $50 million in total.[\\[1\\]](#cite-id-37p09pm6q1)​\n\nFrom February to July 2025, Kuroiwa worked as a researcher and software engineer at Obol Association, where he researched [Ethereum](https://iq.wiki/wiki/ethereum) [staking](https://iq.wiki/wiki/staking) and distributed [validator](https://iq.wiki/wiki/validator) technology (DVT).[\\[1\\]](#cite-id-37p09pm6q1)​[\\[3\\]](#cite-id-gacj7ikhmt) He says the Obol team selected him as one of seven worldwide “Staking Masters.”[\\[1\\]](#cite-id-37p09pm6q1) He also maintains a guide to [Ethereum](https://iq.wiki/wiki/ethereum) validation that covers solo validation and DVT setup, including the use of Obol Charon.[\\[1\\]](#cite-id-37p09pm6q1)​\n\nThe [Ethereum Foundation](https://iq.wiki/wiki/ethereum-foundation-ef) selected Kuroiwa for a developer fellowship, which he held from September 2025 to January 2026.[\\[1\\]](#cite-id-37p09pm6q1)​[\\[3\\]](#cite-id-gacj7ikhmt) His profile says he was selected from more than 30,000 developers and used the fellowship to build [Ethereum](https://iq.wiki/wiki/ethereum) protocols and applications and research Ethereum protocols, agent verification, and payments infrastructure.[\\[1\\]](#cite-id-37p09pm6q1)​\n","categories":[{"id":"people","title":"people"}],"tags":[{"id":"Founder"},{"id":"Developer"},{"id":"Researcher"}],"images":[{"id":"QmP9vqL3JMxA9faHHxL4aRJDrwyxbxLy94qJFYoAPY7XHv","type":"image/jpeg, image/png"}],"media":[],"metadata":[{"id":"references","value":"[{\"id\":\"37p09pm6q1\",\"url\":\"https://www.linkedin.com/in/cruujon\",\"description\":\"Kuroiwa’s professional profile\",\"timestamp\":1793434765314},{\"id\":\"s2lm39anvj\",\"url\":\"https://x.com/cruujon\",\"description\":\"Kuroiwa’s profile and posts\",\"timestamp\":1793434765314},{\"id\":\"gacj7ikhmt\",\"url\":\"https://rocketreach.co/keita-kuroiwa-email_809995405\",\"description\":\"Professional profile and career history\",\"timestamp\":1793434765314}]"},{"id":"linkedin_profile","value":"https://www.linkedin.com/in/cruujon/"},{"id":"main-image-origin","value":"{\"imageId\":\"QmP9vqL3JMxA9faHHxL4aRJDrwyxbxLy94qJFYoAPY7XHv\",\"originalId\":\"QmP9vqL3JMxA9faHHxL4aRJDrwyxbxLy94qJFYoAPY7XHv\"}"},{"id":"commit-message","value":"Add Keita Kuroiwa wiki"}],"events":[{"type":"DEFAULT","title":"Flovia access goes live","date":"2026-10-01","description":"Kuroiwa and Flovia announced that access to the service was live.","link":null,"multiDateStart":null,"multiDateEnd":null,"id":"ea81b006-f5cc-4465-b461-47166b6d2c2a"},{"type":"DEFAULT","title":"Flovia reports thousands of registrants","date":"2026-10-01","description":"Kuroiwa said access had opened to thousands of registrants, and Flovia said it had sent access links to qualified users.","link":null,"multiDateStart":null,"multiDateEnd":null,"id":"98c2d18b-3e05-47df-8731-b46b0ae6770a"}],"linkedWikis":{"founders":["flovia"],"blockchains":[],"speakers":[]},"user":{"id":"0x8af7a19a26d8fbc48defb35aefb15ec8c407f889"},"author":{"id":"0x4a2bc97afbf41a2cbf4b4628f63420682ff4cf2a"},"language":"en","operator":{"id":"0x4a2bc97afbf41a2cbf4b4628f63420682ff4cf2a"}}