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Senior Software Engineer | Blockchain SpecialistEMAIL AVAILABLE | Athens, Greece
Github: https://github.com/greenStreet Address | Telegram: https://t.me/Turtletoken124SUMMARYBlockchain Developer and enthusiast for 6 years, offering Blockchain solutions to both startups and enterprises. So far I spent 8 years as a software engineer. I review business models and help them adjust their businesses within the growing blockchain ecosystem. I've been developing blockchain solutions since 2016, including the crypto exchanges (P2P and CEX), blockchain forks, tokens creation (ERC-20, ERC-721 NFT), smart contracts, Defi, and Ethereum mass payment tools with low gas consumption.I'm actively participating in the development of Blockchain-based solutions for Different industriesEXPERIENCESenior Blockchain Engineer 01/2023 07/2024Protokol
Integrated Protobuf as the main encoding library in the Cosmos SDK, leveraging its tools to enhance data serialization and communication, resulting in a 25% improvement in data transmission efficiency. Tacked Node Client (Daemon) RunTx recovery middleware, ensuring transaction integrity and reliability, and reducing transaction failure rates by 15%. Leveraged Tendermint for secure and efficient transaction processing, improving throughput by 20% and enhancing fault tolerance. Optimized the core ABCI message handlers (CheckTx, DeliverTx, BeginBlock, EndBlock) to ensure efficient transaction validation and processing, resulting in a 30% improvement in transaction throughput. Managed state transitions and processing of transactions during the DeliverTx phase, ensuring accurate and efficient state updates, contributing to a 25% reduction in block processing time. Developed secure state-machines on top of CometBFT using the Cosmos SDK, implementing robust data persistence and transaction handling mechanisms, which resulted in a 40% increase in transaction processing efficiency and a 30% reduction in data inconsistencies. Ran IBC protocols on the Cosmos Hub, facilitating seamless communication and transactions between independent blockchains. This led to a 50% increase in cross-chain transactions.Blockchain Developer | Ethereum Specialist 10/2019 11/2022Syntagma Labs
Launched 4 P2E games, attracting 30,000+ players by developing games like CoinFlip, Blackjack, and Crash. Implemented advanced NFT features using ERC-721, ERC-1155, and ERC-2535 standards, enhancing the functionality and upgradeability of deployed contracts. Successfully directed 12 NFT projects, securing $8 million in funding and engaging 15,000+ users with features like NFT staking, launchpad, and minting. Deployed 5 DAOs and 3 DEXs with token swap, escrow, and cross-chain bridge functionalities, processing transactions worth $50 million and involving 10,000+ users. Facilitated over $20 million in token sales and staking for ERC20, BEP20, SPL, and other tokens, attracting a community of 25,000+ investors. Motivated user engagement by 30% by integrating multiple wallet connections like MetaMask, Phantom, and HashPack across various DApps. Supported a DeFi platform from Ethereum to Hyperledger, resulting in a 50% reduction in transaction fees and a 25% increase in platform user retention while maintaining cross-chain compatibility and security. Used ERC-721 and ERC-1155 Solidity smart contracts on Ethereum and EVM-compatible blockchains, supporting diverse NFT and token use cases. Contributed to the development and optimization of blockchain infrastructure, resulting in a 25% reduction in latency and a 40% improvement in performance. Provided expertise in the transition to and maintenance of Proof of Stake chains, contributing insights that improved network stability and reduced staking-related issues by 20%. Managed the launch of tokens on the ZK-rollup platform, achieving a 60% average staking participation rate through comprehensive tokenomics strategies and secure staking platforms. Balanced a ZK-rollup chain operating on top of the Ethereum blockchain, enabling the execution of transactions off-chain while periodically committing transaction batches to an on-chain rollup contract. This resulted in a 50% reduction in gas fees and increased transaction throughput. Supported Ethereum protocols and features related to Ethereum scaling solutions, including the integration of rollups and sidechains, leading to a 30% increase in transaction throughput.Blockchain Developer 03/2018 08/2019Metabloq.io
Administered comprehensive NFT ecosystems including minting, presale whitelisting, OpenSea/LooksRare/Rarible listing, gifting/airdrops, wallet integration for minting and admin panel, custom minter/holder benefits, IPFS immutable storage, post-mint reveal, and bot protection, resulting in the minting of 100,000+ NFTs and $10 million in marketplace sales in the first quarter by developing scalable and user-friendly solutions. Composed the Rune Token on the Bitcoin network using the Ethereum Protocol, raising $5 million in initial token sales within the first week and achieving a $20 million market cap in a month by designing and deploying the token contract and coordinating a marketing campaign. Established a seamless payment system that integrated cryptocurrency payments via MetaMask and enabled NFT purchases with credit cards, increasing user adoption by 40% and facilitating over $1 million in transactions within the first quarter. Applied multi-signature wallet functionality for secure custody of assets, enhancing Ethereum protocols and reducing unauthorized access incidents by 75% for high-value transactions. Facilitated the integration of Layer 1 (Ethereum) and Layer 2 (off-chain VM) components, ensuring seamless communication and synchronization between the layers. Managed the successful launch of multiple tokens across various standards, including ERC20, ERC404, CW20, BEP20, BRC20, SPL, Token2022, and HTS, driving a 70% increase in user engagement through innovative tokenomics strategies and effective marketing campaigns.Full Stack Developer 05/2016 02/2018Publisto Translated design and wireframes into high-quality code for landing pages for 5 new product concepts. Created accessible, responsive, and functional UI to allow visitors on any device to have the same perfect user experience. This process increased the number of 5 stars UX/UI reviews by 135%. Increased reporting speed of the internal analytics team by 24% by designing and implementing RESTful API services for the internal ERP of the company. Enhanced unit testing coverage to 90% leading to 45% decline in production bugs using test automation. Leveraged Knowledge in Full stack web development, HTML5, CSS3, Tailwind CSS, Javascript, TDD, Mocha, MVC, PHP, Laravel, Code Igniter, Bootstrap, jQuery, REST API, MySQL, PostgreSQL, GraphQL, Redis, PHPUnit, Java Improved UI performance by 60% by identifying bottlenecks, using techniques like React Context API and hooks. Increased system performance by 24% through the development of high-quality, scalable systems to support business-critical applications while working with the DevOps team following the CI/CD practices. Implemented rich user experience by creating 20+ new features in a real-time chat application.projects Launchpad Games | 2023-2024 https://www.bipzy.com/?blockchain=1
Bipzy LaunchPad is a platform for the launch and funding of innovative blockchain projects. It connects project teams with investors, providing a space to showcase ideas, raise capital through token sales, and facilitate community engagement in the crypto space. Defi-SDK | 2021-2022 https://defisdk.zerion.io/
This zero knowledge application is under development and strives to be a client side zk rollup service that will be able to generate proofs for state transitions in the shape of on-chain transaction data. Affondrahttps://xana.net/
XANA is an AI-driven web 3.0 infrastructure custom-built for the Metaverse. Broadly Adopted by major institutions, local governments, and global brands.Skills Blockchain Tech: Cosmos SDK, Tendermint, Ethereum, Polygon, Chainlink, Dapp, Binance Smart Chain, Zk-rollups, HyperLedger, Solana, Web3.js, Consensus Mechanism (POW,POS,DPOS,POC,POI), UniSwap, Metaverse, Ethers.js, DeFi, NFT, Smart Contract, GameFi, DEX, CEX, Tokenization, Security Auditing, Interoperability, Cryptocurrency, Bitcoin, Truflle, Hardhat, Foundry, Ganache, Tenderly Program Language: Solidity, Rust, Python, Go, Golang, Java, C/C++, C# Web Tech: React, Angular, Vue.js, Next.js, Bootstrap/Tailwind, Node.js, Typescript, Javascript,
Database: PostgreSQL, MongoDB, MariaDB, MySQL, SQLite Environment: Docker, Firebase, Kubernetes, Firestore, GitHub Code Management: Aws Lambda, Plastic SCM, LinuxEDUCATIONNational Technical University of AthensBachelor s Degree in Computer Science 09/2012 04/2016PASSIONS Football, MusicSTRENGTH Communication, Collaboration, Leadership, Adaptability, Innovation, Critical Thinking, Problem-Solving
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