Jegor Sidorenko
Senior Full Stack Engineer at Shielded Technologies
Vilnius, Vilnius County, Lithuania
Summary
🤩
Rockstar🎓
Top SchoolJegor Sidorenko is a Senior Full Stack Engineer with two decades of software experience and a decade-plus focus on blockchain, NFTs, DeFi and L2 scaling. He has led NFT and AMM initiatives at Parity and now contributes at IOHK, bringing deep Substrate and Solidity expertise alongside Rust, TypeScript and React Native skills. Notably, he has made substantive open-source contributions to Parity's flagship Substrate and Polkadot SDK—enhancing the pallet_uniques NFT pallet with supply controls, buy/sell flows and off-chain signature verification. A former head of blockchain engineering and serial founder, he pairs product-facing leadership with hands-on pallet and smart-contract development. Based in Vilnius, he is comfortable moving between low-level protocol work and mobile/web product stacks and is known for quickly learning new technologies to ship pragmatic solutions.
11 years of coding experience
20 years of employment as a software developer
Polkadot Blockchain AcademyBachelor of Science (BS) Informatics, Bachelor of Science (BS) Informatics at VILNIUS TECH - Vilnius Gediminas Technical University
Russian, English, Lithuanian
Stackoverflow
1reputation
0reached
1answer
0questions
Github Skills (12)
substrate10
rust10
pallet10
nft10
blockchain10
algorithms6
algorithm6
data-structures6
php6
sonata-admin6
symfony6
data-structure6
Programming languages (11)
Github contributions (5)
paritytech/substrate
Mar 2022 - Jan 2023
Substrate: The platform for blockchain innovators
Role in this project:
Back-end Developer
Back-end DeveloperContributions:312 reviews, 253 commits, 52 PRs in 10 months
Contributions summary:Jegor primarily worked on the `pallet_uniques` pallet, which is part of the Substrate blockchain framework. Their contributions focused on enhancing the pallet's functionality, including renaming code elements, implementing features for setting maximum supply, adding buy and sell methods, and allowing for off-chain signature verification of transactions. Furthermore, the user was involved in refactoring the code, fixing renaming artifacts, addressing locking mechanisms, and improving permissions models related to NFT functionalities. These changes demonstrate expertise in building and modifying Substrate pallets.
blockchainsubstrateparitypolkadotnode
paritytech/polkadot-sdk
Aug 2023 - Apr 2025
The Parity Polkadot Blockchain SDK
Role in this project:Back-end Developer
Back-end DeveloperContributions:49 reviews, 7 PRs, 16 pushes in 1 year 8 months
Contributions summary:Jegor primarily worked on the `pallet_uniques` module within the `polkadot-sdk` repository, focusing on non-fungible token (NFT) functionalities. Their contributions involved refactoring the code, implementing methods for setting item prices and buying items, and adding pre-signed minting capabilities with corresponding signature validations. The user also addressed permissioning issues, optimized code, and integrated the NFT pallet with the Asset Hub Kusama runtime.
blockchainpolkadotcumulussubstrate
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