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→ Blockchain: Ethereum mainnet
→ Creator: tacitvs.eth
BlockchainEthereumEVMBack-End DevelopmentFront-End DevelopmentDatabase ManagementPythonTypeScript
Download Resume→ Blockchain: Ethereum mainnet
→ Creator: tacitvs.eth
0x47b82ed65cc4aafbf02bb6754b6e36e6361822e36320b9620bd8521aef0e06a3I specialize in blockchain development, smart contract implementation, and decentralized applications. With a focus on security and efficiency, I strive to create robust blockchain solutions.
Worked with early-stage blockchain startups and personal projects, focusing on smart contract development, decentralized application architecture across multiple chains, technical reviews, audits and side projects.
Developed a comprehensive library of NFT smart contracts (ERC-721 and ERC-1155) for physical asset tokenization, primarily focusing on firearm collectibles and other real-world items for major clients in the collectibles industry.
Executed sophisticated trading strategies in volatile cryptocurrency markets, maintaining financial independence through disciplined analysis and strategic position management.
Dominated regional banking and insurance markets through strategic client acquisition and sophisticated financial product positioning, establishing unmatched sales authority.
Executed adaptation of Uniswap v3 for custom blockchain, overcoming significant technical barriers in contract deployment and EVM compatibility issues to deliver a functional decentralized exchange.
Developed multi-chain presale infrastructure across eight EVM-compatible blockchains, implementing secure and efficient smart contracts in Solidity.
Served as technical reviewer for 'Developing Blockchain Solutions in the Cloud', with my name and bio featured in the published book.
Developed an upgradable DeFi system for carbon offset tokens, featuring ERC20-compliant token pools with deposit, redemption, and cross-chain bridging capabilities.
Developed smart contracts for NFT projects using Solidity, focusing on gas optimization and cross-project compatibility.
Completed ten problem sets, nine labs, and one final project covering computer science fundamentals, data structures, algorithms, and web development.
Comprehensive training on trading analysis, strategy development, Pinescript, risk management, JavaScript trading, automation, and exchange API setup.
Advanced course covering DAO and Parity hack replication, security mindset, Solidity best practices, contract design, and secure contract patterns including upgradable, proxy, and pausable contracts.
Advanced smart contract development with Truffle, unit testing, ERC standards, migrations, OpenZeppelin contracts, and testnet deployment.
Specialized training on oracles, smart contract integration with Chainlink, node operation, oracle testing, verifiable randomness, and building Chainlink projects.
Foundational course on Solidity basics including arrays, structs, mappings, data location, error handling, inheritance, visibility, events, and external calls.
Comprehensive training on Ethereum DApp development using Truffle, Ganache, NFT marketplace development, token creation, frontend development, Metamask integration, and Web3.js.
Intensive 3-month bootcamp started at the beginning of 2022, covering blockchain fundamentals, smart contract development, decentralized application architecture, and deployment.
Introduction to Ethereum Virtual Machine (EVM), Ethereum basics, token standards, account model, decentralized applications, and smart contract fundamentals.
A collection of my blockchain and web3 projects, highlighting my technical skills and innovative solutions in decentralized applications.
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Technical articles and books I've contributed to in the blockchain and software development space.
Medium
A comprehensive technical guide exploring how deterministic contract deployment works in Ethereum, the cryptographic formula behind CREATE2, and real-world applications like Uniswap's Permit2.
Read MorePackt
A comprehensive guide to building blockchain applications in cloud environments, covering AWS, Azure, and Hyperledger architectures.
Read MoreBlock Magnates
An in-depth analysis of security vulnerabilities that blockchain developers often miss, with practical prevention strategies.
Read MoreBlock Magnates
A guide to writing clean, readable, and maintainable Solidity code with best practices for naming, variable visibility, and events.
Read MoreCoinsbench
Continues the exploration of Solidity style with insights from OpenZeppelin's code and recommendations for documentation and formatting.
Read MoreCoinsbench
A practical guide to implementing TDD in smart contract development, with examples using Hardhat and Chai for testing Solidity code.
Read MoreWhen I'm not coding, you'll find me enjoying these activities that help me recharge and grow
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What colleagues and clients say about my work and collaboration
I had the privilege of working with Ivan Leskov at BlockTrust, where he demonstrated exceptional skills as a blockchain developer. Ivan's proficiency in blockchain technology, including his work with Solidity, is truly impressive. He has a deep understanding of both front-end and back-end development, which he combines with a genuine enthusiasm for learning and growing in the field. Ivan's technical expertise is complemented by his eagerness to tackle new challenges. Whether developing complex blockchain solutions or collaborating on diverse projects, his ability to adapt and contribute effectively was evident. His commitment to continuous learning and improvement makes him a valuable asset to any team. Ivan's contributions to our projects were invaluable, and his positive attitude and collaborative spirit made working with him a pleasure. I have no doubt that he will continue to excel and bring significant value to future endeavors. I highly recommend Ivan for any role that demands expertise in blockchain development and a passion for innovation.
Acumatica ERP Specialist | Expertise in C#, Blazor, and Blockchain
Reigner worked with Ivan on the same team
Interested in working together or have a question? Feel free to reach out - I'd love to hear from you!
Europe, Poland
Freelance / Part-time / Full-time