Gabriel Fukushima
Senior Blockchain Protocol Engineer at ConsenSys
Queensland, Australia
Summary
🤩
Rockstar🎓
Top SchoolGabriel Fukushima is a Senior Blockchain Protocol Engineer with eight years of professional experience and a Computer Science degree from UNESP, currently working at ConsenSys in Melbourne. He brings deep fintech domain knowledge from Itaú-Unibanco’s treasury systems and hands-on full-stack experience building web platforms and integrations across Brazil, Argentina and Australia. Gabriel contributes to enterprise Ethereum clients—having fixed core Besu bugs and migrated deprecated APIs—and now contributes to Teku, reflecting a strong focus on blockchain client stability, sync and RPC reliability. Comfortable across back-end Java, .NET ecosystems and front-end stacks, he has also taught programming to kids and built practical products like Wordpress plugins and license managers, showing a blend of technical depth and user-focused delivery. Notably, his background in treasury workflows and large-scale migration projects informs a pragmatic approach to protocol engineering and production readiness.
8 years of coding experience
4 years of employment as a software developer
UNESP - Universidade Estadual Paulista "Júlio de Mesquita Filho"
Portuguese, English, Spanish
Github Skills (10)
javas10
command-line-interface10
ethereum10
java10
blockchain10
cli10
command-line10
testing9
rpc9
api9
Programming languages (11)
Github contributions (5)
hyperledger/besu
Jun 2022 - Jan 2023
An enterprise-grade Java-based, Apache 2.0 licensed Ethereum client https://wiki.hyperledger.org/display/besu
Role in this project:
Back-end Developer
Back-end DeveloperContributions:245 reviews, 11 commits, 118 PRs in 6 months
Contributions summary:Gabriel primarily contributed to the Besu codebase by fixing issues related to the Ethereum client's command-line interface and core functionalities. They addressed bugs related to sync modes, fast sync peer configurations, and RPC API error messages. Furthermore, the user refactored code to use more modern APIs, like migrating deprecated features in picocli. The user's work demonstrates a focus on improving the client's usability, error handling, and overall stability.
besuhyperledgerlicensedethereump2p
gfukushima/teku
Nov 2022 - Mar 2025
Java Implementation of the Ethereum 2.0 Beacon Chain
Contributions:7 PRs, 361 pushes, 102 branches in 2 years 5 months
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