Created Sales Chat-bot based on OpenAI GPT4 using semantic DB to analyze customers website and conversations history and give high-quality answers in chats. Increased conversion and decreased lead cost. Optimized Sales Department up to 75%!

Project: Complex Governance System for a Decentralized Country Responsibilities: - Designed and developed a comprehensive community management system for a decentralized country, which included citizenship, political parties, multi-step presidential elections, and voting for various legislative documents. - Implemented the system using Solidity, with 7,000 lines of code and 25 smart contracts. - Ensured the efficient execution and security of the system while maintaining decentralization and transparency

As an independent blockchain security auditor, I have conducted security audits for hundreds of smart contracts from dozens of companies, refining my skills and expertise in the field. Additionally, I actively participate in the crypto community, contribute to open-source projects, and stay up-to-date with the latest hacking techniques and published breaches. - Sniper bot for DEX: Assessed the risk of front-running attacks on DEX. Developed strategies to mitigate these risks and enhance overall security, including implementing time delays to discourage front-running, and introducing transaction reordering protections, such as using a commit-reveal scheme to conceal transaction ordering until a specified time. - FlashBots - block manipulations: Investigated the implications of FlashBots on the Ethereum network and their potential use in NFT-related hacks. Explored cases where flash loans were used to manipulate randomization processes in NFT minting and revealing events, compromising the fairness of the distribution. - Deep gas optimizations: Optimized smart contracts for efficient gas usage using advanced techniques, resulting in improved security and reduced user costs. Some of these advanced techniques include: Utilizing Merkle trees to minimize storage and computational requirements for complex data structures. Implementing Solidity inline assembly to reduce gas costs by directly interacting with the EVM, bypassing some of the overhead introduced by high-level languages. Using the diamond pattern (EIP-2535) to split large smart contracts into smaller, more gas-efficient modules while maintaining a unified interface. Optimizing contract code by identifying and removing redundant operations, reducing the overall gas cost of the contract. - Additional accomplishments: Implemented various testing methodologies, such as parameterized tests, equivalence class partitioning, boundary value analysis, and random test scenarios to ensure smart contracts function as intended. Explored formal verification techniques to prove the correctness of smart contracts. For instance, I used tools like K Framework and Dafny to mathematically model the smart contract's behavior and verify its adherence to specified properties, ensuring a higher level of confidence in the contract's security. Developed a separate transaction verification server that uses Tenderly simulation and anomaly detection to verify transaction results before execution, improving overall security. By engaging with clients and the crypto community, I have accumulated a wealth of knowledge and experience, making me a valuable asset as a blockchain security auditor.

- P2P and Oracle contracts. - MasterChef contract.

Project: Cross-chain Router for Easy DeFi Operations Problem: Users have to do many steps when doing cross-chain operations manually (swap -> bridge -> buy -> wrap, etc.), and atomic execution is not guaranteed. Solution: - Designed a secure cross-chain data transfer protocol - Developed and tested smart contracts and backend systems, making sure the safe execution of cross-chain operations in one transaction - Created a cross-chain limit order protocol with an off-chain orderbook based on cryptographic signatures, ensuring atomic finality - Developed Contract Adapters for dozens of DeFi projects. Results: - Improved security and efficiency for thousands of users, making their experience better - Allowed smooth cross-chain DeFi operations, handling millions of USD in volume

First 3d shooter with blockchain erc20/erc1155 economy Project: First 3D Shooter with Blockchain ERC20/ERC1155 Economy Problem: 2D GameFi lacks excitement and high-quality graphics for shooter players. Solution: - Designed the project architecture with a focus on security and scalability - Developed tokenomics and presented to investors - Integration with the Unity 3D engine - Successfully passed Launchpad ICO

- NFT Marketplace Development: Developed a successful NFT marketplace with a market cap of approximately $100 million. Key responsibilities included designing tokenomics, developing smart contracts, integrating with OpenSea, caching events, setting up CDN and backend, and ensuring seamless frontend Web3 integration. The project successfully passed the CERTIK audit. - NFT Collection Launch: Managed the launch of various NFT collections by developing tokenomics, smart contracts, and integrating with OpenSea and Web3. I was also responsible for handling the reveal and generation process for the collections. - Chain Bridge: Contributed to the development of a secure and efficient cross-chain bridge to facilitate the transfer of assets between multiple blockchain networks. Implemented token locking, minting, and burning mechanisms and ensured compatibility with various EVM-compatible chains such as Ethereum, Binance Smart Chain, and Polygon. - Decentralized Exchange (DEX) Development: Worked on creating a DEX that allowed users to trade tokens directly from their wallets, utilizing an automated market maker (AMM) model for liquidity provision. Developed smart contracts for token swaps, liquidity pools, and staking rewards.

- Top DeFi Project Audits: Curve.fi (tvl $20b), NuCypher ($1b cap), 1inch, Sushiswap, and dozens of others (examples). - Critical Bug Discovery: Identified and reported critical vulnerabilities in well-known smart contracts, written in Solidity and Vyper. - Secure DeFi Development Practices: Utilized industry best practices for secure DeFi development, ensuring the safety and reliability of audited projects. - Risk Mitigation: Actively mitigated risks by staying updated on the latest hacks and security breaches, applying this knowledge to improve the security of audited projects. During my tenure at MixBytes, I honed my skills as a blockchain auditor by working on high-profile DeFi projects, discovering critical bugs, and applying secure development practices to ensure the safety and stability of audited projects.

- Created a cryptocurrency trading-bot (python, asyncio, elasticsearch). - Created a front-end for the trading-bot (angular, nodejs). - Dmart contract of derivatives DEX for options trading (solidity). keeps track of delta and vega, liquidates if necessary. - VIDEO of statistical arbitrage.

The system manages supermarkets based on BigData (billions of receipts) - increased sales up to 5%. - Processed receipts and warehouse data (spark, clickhouse, postgres). - Designed flexible stores sales reports.

Processing ~50 millions handwritten documents annually via computer vision. - Made the web application (MySQL, RabbitMQ, Mongo). - Made a Computer scans processing vision system (OpenCV + Feature detection).

Marketing integrations for Moscow Metro. - backend for bonus system of Moscow Metro 20 000 000 users (python, postgres, rabbitmq, docker) The application to control work of ~10000 cars of Moscow Housing Department - saved billions for the city budget. - Developed the application (Python + Tornado + Redis + Mongo + Postgres).

- Marketing research reports. - Fake questionnaires auto-detection (MatplotLib, graph analysis).

- Integrated Oracle ERP-system to Yandex. - HUGE database management and optimisations.

Экономический Факультет, Экономика

Механико-Математический Факультет, Математика. Прикладная математика

Berkeley (edx.org)

Stanford University (Coursera)

Universitat Pompeu Fabra of Barcelona & Stanford University (Coursera), Signal Processing

University of Toronto (Coursera)

"Premier" Language School