# Keita Kuroiwa

> Keita Kuroiwa is a software engineer and entrepreneur known for developing Ethereum protocols and founding Flovia, an API group-purchasing company.

- Canonical URL: https://iq.wiki/wiki/keita-kuroiwa
- Categories: People in crypto
- Tags: Developer, Founder, Researcher
- Created: 2026-10-31T08:33:58.423Z
- Last updated: 2026-10-31T08:33:58.423Z
- Source: IQ.wiki — the world's largest blockchain and crypto encyclopedia (https://iq.wiki)

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**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)​

## Education

Kuroiwa 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)​

## Career

Kuroiwa 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)​

From 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)​

From 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)​

The [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)​