Anatolii Osetsymskyi
Rust Core Blockchain Developer at Fuel Labs
Ukraine
Summary
🤩
Rockstar🎓
Top SchoolAnatolii Osetsymskyi is a Rust core blockchain developer with a decade of experience building and optimizing distributed systems, smart contract platforms, and execution layers. He has driven core contributions at Fuel Labs and Supercolony, including refactoring fuel-core to reduce race conditions and integrating coinbase logic, and meaningful enhancements to ink! such as ECDSA recovery and storage refactors. His background spans C++, Go, and WASM runtime work—designing DFMS architectures, consensus for non-deterministic operations, and dramatic performance improvements (e.g., 25x Graph indexer speedups and contract size reductions). He routinely architects standards and libraries (OpenBrush) to simplify WASM smart contract development and has ported large Solidity codebases to ink!. Based in Ukraine with a master’s in applied mathematics, he combines deep low-level systems skills with practical developer tooling and ecosystem-level thinking.
10 years of coding experience
7 years of employment as a software developer
Магистр, Прикладная математика, Магистр, Прикладная математика at Одесский национальный университет имени И. И. Мечникова
Русский, Украинский, Английский
Github Skills (14)
smart-contracts10
database-management10
transaction10
transactional10
webassembly10
rust10
fuel10
blockchain10
polkadot9
polkadot-js9
substrate8
ecdsa8
rust-wasm7
wasm-pack7
Programming languages (11)
Github contributions (5)
FuelLabs/fuel-core
Aug 2022 - Jan 2023
Rust full node implementation of the Fuel v2 protocol.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:57 releases, 2328 reviews, 127 commits in 5 months
Contributions summary:Anatolii primarily focused on refactoring and improving the `fuel-core` repository. Their work involved adding and implementing new features, such as integrating the coinbase logic into the transaction pool. Further, the user made code changes that were meant to reduce the number of race conditions in database interactions. The contributions suggest a focus on improving and expanding core functionalities of the Fuel v2 protocol implementation.
rustfull-nodefuelblockchain
use-ink/ink
Jun 2021 - Jan 2023
Polkadot's ink! to write smart contracts.
Role in this project:Back-end Developer
Back-end DeveloperContributions:180 reviews, 18 commits, 45 PRs in 1 year 7 months
Contributions summary:Anatolii primarily contributed to the `ink!` smart contract language for Polkadot, implementing and refining core features. Their work included adding and optimizing ECDSA recovery functionality, which involved adding new methods and tests. They also addressed code generation issues, such as removing unnecessary code during build creation and optimizing the size of the `Erc20` contract by removing unnecessary imports. Additionally, the user made refactoring changes to storage, and various bug fixes throughout the codebase.
kusamasubstraterustethereumblockchain
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.