George Tebrean
Senior Java Developer Contractor Freelancer at Web3 Labs - We're hiring!
Romania
Summary
🤩
Rockstar🎓
Top SchoolGeorge Tebrean is a Senior Java developer and freelance contractor with 8+ years of hands-on experience building cloud-native microservices and blockchain-integrated systems for industries from finance and telecom to manufacturing. He combines deep Java/Kotlin expertise (Spring Boot, Gradle/Maven) with practical blockchain experience—contributing to high-profile open-source projects like web3j and Hyperledger Besu where he implemented low-level Ethereum encoding/decoding logic and refactored RPC and transaction pool behavior. Comfortable leading small teams and mentoring contributors, he drives production launches, API design, and performance improvements while also stewarding community growth as an LF Decentralized Trust maintainer and mentor. Based in Romania and focused on remote engagements, George pairs systems-level thinking (databases, containers, Kubernetes) with a taste for decentralized identity standards and EVM tooling, making him a go-to engineer for organizations aiming to marry enterprise Java with Web3.
4 years of coding experience
6 years of employment as a software developer
Colegiul National Militar ,,Ștefan cel Mare"Bachelor's degree, Computer Science, Bachelor's degree, Computer Science at Technical University of Cluj Napoca
Github Skills (11)
json-rpc10
hyperledger-besu10
javas10
smart-contracts10
ethereum10
blockchain10
java10
testing9
solidity9
unit-testing9
refactoring8
Programming languages (10)
Github contributions (5)
LFDT-web3j/web3j
Feb 2022 - Jan 2023
Lightweight Java and Android library for integration with Ethereum clients
Role in this project:
Back-end Developer
Back-end DeveloperContributions:2 releases, 109 reviews, 48 commits in 11 months
Contributions summary:George's contributions focused on implementing and testing core functionalities related to encoding and decoding of Ethereum smart contract data. Specifically, they made modifications and added unit tests to the `TypeEncoder` and `FunctionReturnDecoder` classes, demonstrating their expertise in the library's low-level operations. The changes involved working with various data types, suggesting a strong understanding of the library's internal structure, which helps to ensure the correct implementation of key features related to smart contract interaction. These changes improved the testing coverage of the library.
ethereumrxjavasmart-contract-toolsblockchainandroid-library
hyperledger/besu
Mar 2022 - Sep 2024
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:8 reviews, 15 PRs, 28 comments in 2 years 6 months
Contributions summary:George's contributions primarily involve bug fixes and refactoring within the Hyperledger Besu project, an enterprise-grade Ethereum client. They addressed issues related to the `eth_feeHistory` JSON-RPC method, modifying Java code for testing and functionality. Additionally, the user refactored transaction pool options, moving configurations within the Besu command structure and implementing command-line options. Furthermore, they have made changes concerning pending transaction details, including the transaction type.
besuhyperledgerlicensedethereump2p
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